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Zhen Zheng
School of Chemistry and Chemical Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China

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Journal article
Published: 29 June 2021 in Toxics
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The rapid development of nanotechnology and its widespread use have given rise to serious concerns over the potential adverse impacts of nanomaterials on the Earth’s ecosystems. Among all the nanomaterials, silver nanoparticles (AgNPs) are one of the most extensively used nanomaterials due to their excellent antibacterial property. However, the toxic mechanism of AgNPs in nature is still unclear. One of the questions under debate is whether the toxicity is associated with the size of AgNPs or the silver ions released from AgNPs. In our previous study, a sub-micron hybrid sphere system with polydopamine-stabilized AgNPs ([email protected]) was synthesized through a facile and green method, exhibiting superior antibacterial properties. The current study aims to explore the unique toxicity profile of this hybrid sphere system by studying its effect on germination and early growth of Lolium multiflorum, with AgNO3 and 15 nm AgNPs as a comparison. The results showed the seed germination was insensitive/less sensitive to all three reagents; however, vegetative growth was more sensitive. Specifically, when the Ag concentration was lower than 40 mg/L, [email protected] almost had no adverse effects on the root and shoot growth of Lolium multiflorum seeds. By contrast, when treated with AgNO3 at a lower Ag concentration of 5 mg/L, the plant growth was inhibited significantly, and was reduced more in the case of AgNP treatment at the same Ag concentration. As the exposures of [email protected], AgNO3, and AgNPs increased, so did the Ag content in the root and shoot. In general, [email protected] was proven to be a potential useful hybrid material that retains antibacterial property with light phytotoxicity.

ACS Style

Xinrui Wang; Hongyong Luo; Weihua Zheng; Xinling Wang; Haijun Xiao; Zhen Zheng. Effects of Polydopamine Microspheres Loaded with Silver Nanoparticles on Lolium multiflorum: Bigger Size, Less Toxic. Toxics 2021, 9, 151 .

AMA Style

Xinrui Wang, Hongyong Luo, Weihua Zheng, Xinling Wang, Haijun Xiao, Zhen Zheng. Effects of Polydopamine Microspheres Loaded with Silver Nanoparticles on Lolium multiflorum: Bigger Size, Less Toxic. Toxics. 2021; 9 (7):151.

Chicago/Turabian Style

Xinrui Wang; Hongyong Luo; Weihua Zheng; Xinling Wang; Haijun Xiao; Zhen Zheng. 2021. "Effects of Polydopamine Microspheres Loaded with Silver Nanoparticles on Lolium multiflorum: Bigger Size, Less Toxic." Toxics 9, no. 7: 151.

Research article
Published: 18 May 2020 in ACS Applied Materials & Interfaces
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Lots of beetles, moths and birds in natural world present stunning unique structural colors as well as excellent hydrophobic performance. Herein, a novel bio-inspired variable structural color film with organic solvent responsiveness and surface hydrophobicity was fabricated. Cellulose nanocrystals (CNCs) provided structural color with left-handed helicity. PEG-PPG-PEG triblock copolymers (PPPTCs) was blended with CNCs, giving rise to organic solvent responsive structural color and wider red-shift window of reflectance peak. Color of the film could be regulated repeatedly under stimulus of cyclohexanone with an obvious red shift up to 107 nm, corresponding to a macroscopical color change from blue to yellow. Low surface energy compound hexadecyltrimethoxysilane (HDTMS) was covalently grafted on the surface in one-step method to introduce hydrophobicity, successfully preventing the effect of water on the ordered nano-structure. Based on the bionics principle, the as-prepared CNCs/PPPTCs nanocomposite films with variable structural color and hydrophobicity are beneficial to their prospective applications in display screen, rewritable hydrophobic structural color-changing paper, biomimetic sensors, and so forth.

ACS Style

Chengyuan Sun; Dandan Zhu; Haiyan Jia; Chongchong Yang; Zhen Zheng; Xinling Wang. Bioinspired Hydrophobic Cellulose Nanocrystal Composite Films as Organic-Solvent-Responsive Structural-Color Rewritable Papers. ACS Applied Materials & Interfaces 2020, 12, 26455 -26463.

AMA Style

Chengyuan Sun, Dandan Zhu, Haiyan Jia, Chongchong Yang, Zhen Zheng, Xinling Wang. Bioinspired Hydrophobic Cellulose Nanocrystal Composite Films as Organic-Solvent-Responsive Structural-Color Rewritable Papers. ACS Applied Materials & Interfaces. 2020; 12 (23):26455-26463.

Chicago/Turabian Style

Chengyuan Sun; Dandan Zhu; Haiyan Jia; Chongchong Yang; Zhen Zheng; Xinling Wang. 2020. "Bioinspired Hydrophobic Cellulose Nanocrystal Composite Films as Organic-Solvent-Responsive Structural-Color Rewritable Papers." ACS Applied Materials & Interfaces 12, no. 23: 26455-26463.

Research article
Published: 30 September 2019 in ACS Applied Materials & Interfaces
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It has been widely reported that cellulose nanocrystals (CNCs) demonstrate a special structural colour, which stems from chiral nematic domains. Herein, the humidity and heat dual response nanocomposite films with multi-layered helical structure were prepared by self-assembling of CNCs and hydrazone groups modified poly(N-isopropylacrylamide) (PNIPAM) copolymers. Furthermore, glutaraldehyde was involved to act as chemical linker to improve cyclic stability by forming acylhydrazone bonds. The structural colour of the films could be easily regulated by humidity, heat or the content of modified PNIPAM copolymers. The absorption of water in higher humidity led to volume expansion of the resin, resulting in a red shift for up to 145 nm. In contrast, the resin shrank under the temperature above the lower critical solution temperature (LCST) of PNIPAM, leading to a blue shift for up to 87 nm. It was notable that the change of colour can be easily captured by naked eyes. Moreover, the films exhibited excellent stability and cyclicity in response to either vapour or liquid water due to the chemical linking between CNCs and resins. The as-prepared CNCs/PNIPAM nanocomposite films with humidity or heat responsibilities are promising in stimuli-responsive sensors, printing industry and surface decorations, etc.

ACS Style

Chengyuan Sun; Dandan Zhu; Haiyan Jia; Kun Lei; Zhen Zheng; Xinling Wang. Humidity and Heat Dual Response Cellulose Nanocrystals/Poly(N-Isopropylacrylamide) Composite Films with Cyclic Performance. ACS Applied Materials & Interfaces 2019, 11, 39192 -39200.

AMA Style

Chengyuan Sun, Dandan Zhu, Haiyan Jia, Kun Lei, Zhen Zheng, Xinling Wang. Humidity and Heat Dual Response Cellulose Nanocrystals/Poly(N-Isopropylacrylamide) Composite Films with Cyclic Performance. ACS Applied Materials & Interfaces. 2019; 11 (42):39192-39200.

Chicago/Turabian Style

Chengyuan Sun; Dandan Zhu; Haiyan Jia; Kun Lei; Zhen Zheng; Xinling Wang. 2019. "Humidity and Heat Dual Response Cellulose Nanocrystals/Poly(N-Isopropylacrylamide) Composite Films with Cyclic Performance." ACS Applied Materials & Interfaces 11, no. 42: 39192-39200.

Research article
Published: 20 August 2019 in ACS Biomaterials Science & Engineering
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Biocompatible bone adhesive is a kind of promising biomaterial among orthopaedic and trauma surgery. Yet despite the urgent need, there is no appropriate system that can meet all the requirements for bone adhesive. In this study, a porous polyurethane adhesive (PUA) was fabricated and the effects of water, polyisocyanate and β-calcium phosphate (β-TCP) on the physicochemical, mechanical properties of PUAs were investigated. By varying the water content, PUAs with different surface morphology and porosity were prepared. The adhesion strength and mechanical property of the adhesives could be enhanced by the addition of polyisocyanate and β-TCP. The adhesion strength of the PUA to bone was 2 times higher than that of clinic poly(methyl methacrylate) (PMMA) bone cement. The in vitro cell culture and attachment assays indicated good biocompatibility of the PUAs. In vivo analysis in a rabbit model demonstrated that the porous structure of the PUA could facilitate the growth of cells and bone tissues.

ACS Style

Kun Lei; Qi Zhu; Xinling Wang; Haijun Xiao; Zhen Zheng. In Vitro and in Vivo Characterization of a Foam-Like Polyurethane Bone Adhesive for Promoting Bone Tissue Growth. ACS Biomaterials Science & Engineering 2019, 5, 5489 -5497.

AMA Style

Kun Lei, Qi Zhu, Xinling Wang, Haijun Xiao, Zhen Zheng. In Vitro and in Vivo Characterization of a Foam-Like Polyurethane Bone Adhesive for Promoting Bone Tissue Growth. ACS Biomaterials Science & Engineering. 2019; 5 (10):5489-5497.

Chicago/Turabian Style

Kun Lei; Qi Zhu; Xinling Wang; Haijun Xiao; Zhen Zheng. 2019. "In Vitro and in Vivo Characterization of a Foam-Like Polyurethane Bone Adhesive for Promoting Bone Tissue Growth." ACS Biomaterials Science & Engineering 5, no. 10: 5489-5497.

Research article
Published: 23 May 2019 in ACS Omega
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In the paper, graphene oxide (GO) and two kinds of styrenic resins, poly[styrene-b-(ethylene-co-butylene)-b-styrene] (SEBS) and maleic anhydride (MA) grafted SEBS (MA-g-SEBS), were utilized to explore the interfacial interaction of carbon-based materials and block copolymers as layer-by-layer (LBL) assembly films. The details of the interlayer interaction of the two kinds of composite films were investigated through the analysis of the mechanical properties and internal structure of the composites. For the SEBS/GO composite film, the “interlock” structure tended to form between the GO sheets and SEBS resin, and the physical “interlocking effect” could make full use of the excellent mechanical properties of GO nanosheets. As a result, both failure strength and elongation at break of the SEBS/GO composite film were enhanced by 50 and 25%, respectively. On the other hand, some different structures were found in the MA-g-SEBS/GO composite film, where the GO sheets stacked onto the resin closely because of the chemical interaction between them and no obvious “interlocks” was found within the interface, and the chemical interface interaction was strong enough to prevent the slide of GO nanosheets under tension after the graphene sheets were highly oxidized, so the mechanical properties of the MA-g-SEBS/GO composite film could be also enhanced. Based on an overall consideration of the research results of these LBL assembled composites, choosing more perfect materials and structures is needed, which should use physical and chemical interfacial interactions more efficiently, to obtain better mechanical properties of inorganic carbon–organic resin composites.

ACS Style

Kun Lei; Chidao Zhang; Xinling Wang; Yunlong Sun; Haijun Xiao; Zhen Zheng. Interlock or Chemical Bond: Investigation on the Interface of Graphene Oxide and Styrenic Block Copolymers as Layer-by-Layer Films. ACS Omega 2019, 4, 9120 -9128.

AMA Style

Kun Lei, Chidao Zhang, Xinling Wang, Yunlong Sun, Haijun Xiao, Zhen Zheng. Interlock or Chemical Bond: Investigation on the Interface of Graphene Oxide and Styrenic Block Copolymers as Layer-by-Layer Films. ACS Omega. 2019; 4 (5):9120-9128.

Chicago/Turabian Style

Kun Lei; Chidao Zhang; Xinling Wang; Yunlong Sun; Haijun Xiao; Zhen Zheng. 2019. "Interlock or Chemical Bond: Investigation on the Interface of Graphene Oxide and Styrenic Block Copolymers as Layer-by-Layer Films." ACS Omega 4, no. 5: 9120-9128.

Full paper
Published: 13 September 2018 in Macromolecular Materials and Engineering
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Further improving mechanical performances of the tetra‐PEG hydrogel and simultaneously endowing it with functionalities remains a challenge. Herein, rGO is introduced into the tetra‐PEG network to construct a tetra‐PEG/rGO nanocomposite (NC) hydrogel with improved mechanical performances and functionalities. The hydrogel is prepared by in situ simultaneous polymerization of clickable tetra‐PEG macromonomers (TAPEG and TPPEG) and reduction of GO in one pot. The amount of rGO introduced into the hydrogel network is determined and can be controlled through tuning the feed ratio of the GO to the macromonomers. The tetra‐PEG/rGO NC hydrogel displays drastically improved mechanical performances including tensile properties, compressive properties, and fatigue resistance compared to the pristine clickable tetra‐PEG hydrogel. SEM, FT‐IR, and loading–unloading experiments indicate that interactions between rGO sheets and tetra‐PEG segments contribute to the mechanical improvement. Furthermore, the tetra‐PEG/rGO NC hydrogel exhibits selective dye adsorption ability and near‐infrared light responsiveness. The tetra‐PEG/rGO NC hydrogel with excellent mechanical performances and functionalities is highly promising in many areas such as dye absorption, remote light‐controlled devices, and tissue engineering.

ACS Style

Lina Wang; Kun Lei; Zhao Li; Xinling Wang; Haijun Xiao; Zhen Zheng. Tetra‐PEG‐Based Nano‐Enhanced Hydrogel with Excellent Mechanical Properties and Multi‐Functions. Macromolecular Materials and Engineering 2018, 303, 1 .

AMA Style

Lina Wang, Kun Lei, Zhao Li, Xinling Wang, Haijun Xiao, Zhen Zheng. Tetra‐PEG‐Based Nano‐Enhanced Hydrogel with Excellent Mechanical Properties and Multi‐Functions. Macromolecular Materials and Engineering. 2018; 303 (11):1.

Chicago/Turabian Style

Lina Wang; Kun Lei; Zhao Li; Xinling Wang; Haijun Xiao; Zhen Zheng. 2018. "Tetra‐PEG‐Based Nano‐Enhanced Hydrogel with Excellent Mechanical Properties and Multi‐Functions." Macromolecular Materials and Engineering 303, no. 11: 1.

Journal article
Published: 19 January 2016 in Journal of Materials Science
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Epoxy adhesive as an engineering material has more and more applications in industry. But to date, water resistance of the adhesive is still a very difficult problem to be solved. By mimicking mussel adhesive proteins, dopamine (DA) was applied as one of the two curing agents of epoxy adhesive to improve the water resistance of the adhesive, and the other was phenethylamine (PEA). The effects of the contents of DA on both adhesion property and water absorption of epoxy/PEA/DA adhesives were investigated in detail. The results of lap shear test (LST) showed that the adhesion strength of the epoxy adhesives after the introduction of proper amount of DA was still up to 7 MPa even after the sample was immersed in water for over 230 days. And then the effects of metal ions Zn(II) and Fe(III) on the adhesion properties of the epoxy adhesives were also further studied. It was found that the adhesion strength of the adhesives, when the content of DA was no more than 5 wt%, can be further increased through the complexation of a small quantity of ferric ions with DA. The coordination mechanism of catechol with Fe(III) ions in the system has been investigated by both UV/Vis spectra and XRD curves. The results testified that more bis-catecholate complexes form at high DA: Fe ratios and thus the adhesives have higher cohesion strength for having more regular structures after curing. In a word, the introductions of proper amount of DA and metal ion endow the epoxy adhesive better water resistance and excellent adhesion properties.

ACS Style

Fei Dai; Feng Chen; Tao Wang; Shaoguang Feng; Chunlin Hu; Xinling Wang; Zhen Zheng. Effects of dopamine-containing curing agents on the water resistance of epoxy adhesives. Journal of Materials Science 2016, 51, 4320 -4327.

AMA Style

Fei Dai, Feng Chen, Tao Wang, Shaoguang Feng, Chunlin Hu, Xinling Wang, Zhen Zheng. Effects of dopamine-containing curing agents on the water resistance of epoxy adhesives. Journal of Materials Science. 2016; 51 (9):4320-4327.

Chicago/Turabian Style

Fei Dai; Feng Chen; Tao Wang; Shaoguang Feng; Chunlin Hu; Xinling Wang; Zhen Zheng. 2016. "Effects of dopamine-containing curing agents on the water resistance of epoxy adhesives." Journal of Materials Science 51, no. 9: 4320-4327.

Journal article
Published: 30 January 2015 in Journal of Applied Polymer Science
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The Diels–Alder (DA) reaction is particularly desirable for the preparation of heat‐stimuli self‐healing polymeric materials because of its thermal reversibility, high yield, and minimal side reactions. Some attempts were conducted to synthesize polyether–maleimide‐based crosslinked self‐healing polyurethane with DA bonds (C‐PEMIPU–DA) through the reactions of the prepolymer (polymeric MDI/PBA‐1000) functionalized by furfuryl amine and polyether–maleimide without benzene in this study. The structures of intermediates and C‐PEMIPU–DA were first confirmed by 1H‐NMR, Fourier transform infrared spectroscopy, and differential scanning calorimetry. Next, the thermal reversibility and the self‐healing performance of C‐PEMIPU–DA were studied by 1H‐NMR, polarizing optical microscopy, tensile testing, and a sol–gel process. The results show that C‐PEMIPU–DA exhibited interesting properties of thermal reversibility and self‐healing. The polymers could be applied to self‐healing materials or recyclable materials in the fields of the repair of composite structures and aging parts because of their thermosetting properties at room temperature and thermoplasticity at higher temperatures. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41944.

ACS Style

Yiting Zhong; Xinling Wang; Zhen Zheng; Pengfei Du. Polyether-maleimide-based crosslinked self-healing polyurethane with Diels-Alder bonds. Journal of Applied Polymer Science 2015, 132, 1 .

AMA Style

Yiting Zhong, Xinling Wang, Zhen Zheng, Pengfei Du. Polyether-maleimide-based crosslinked self-healing polyurethane with Diels-Alder bonds. Journal of Applied Polymer Science. 2015; 132 (19):1.

Chicago/Turabian Style

Yiting Zhong; Xinling Wang; Zhen Zheng; Pengfei Du. 2015. "Polyether-maleimide-based crosslinked self-healing polyurethane with Diels-Alder bonds." Journal of Applied Polymer Science 132, no. 19: 1.

Journals
Published: 18 November 2014 in Journal of Materials Chemistry A
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A tetrahedron-like PEG macromonomer-based fluorescent hydrogel was fabricated by a facile method.

ACS Style

Haiyan Jia; Zhao Li; Xinling Wang; Zhen Zheng. Facile functionalization of a tetrahedron-like PEG macromonomer-based fluorescent hydrogel with high strength and its heavy metal ion detection. Journal of Materials Chemistry A 2014, 3, 1158 -1163.

AMA Style

Haiyan Jia, Zhao Li, Xinling Wang, Zhen Zheng. Facile functionalization of a tetrahedron-like PEG macromonomer-based fluorescent hydrogel with high strength and its heavy metal ion detection. Journal of Materials Chemistry A. 2014; 3 (3):1158-1163.

Chicago/Turabian Style

Haiyan Jia; Zhao Li; Xinling Wang; Zhen Zheng. 2014. "Facile functionalization of a tetrahedron-like PEG macromonomer-based fluorescent hydrogel with high strength and its heavy metal ion detection." Journal of Materials Chemistry A 3, no. 3: 1158-1163.

Article
Published: 04 December 2013 in Journal of Shanghai Jiaotong University (Science)
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High performance fibers impregnated by shear thickening fluids (STFs) have been recognized as a kind of latent stab-resistant materials. In our work, the rheological properties of various nano-silica particles in different carriers were first investigated, some of which showed the typical characteristic of shear thickening phenomena. And then, the effects of add-on and surface hydrophilicity of silica particles, the type and concentration of the carriers were discussed in detail. It was found that the systems of hydrophilic silica in ethylene glycol, butylenes glycol and polyethylene glycol (PEG) demonstrated shear thickening; moreover, the reversibility of rheological behaviors of hydrophilic silica-PEG300 suspensions indicated energy dissipation existed within a circulation of shear stress. Furthermore, the detail mechanism of STF based nano-silica particles was explored and a process diagram was presented. Finally, the stab-resistance and morphology of cutting edge of ultra high molecular weight polyethylene (UHMWPE) fabric impregnated STF composites were investigated and the results were analyzed. The higher silica add-on was benefit to the improvement of the stab resistance of the composites.

ACS Style

Juan Gu; Xian-Cong Huang; Yan Li; Xin-Ling Wang; Mei-Wu Shi; Zhen Zheng. Improving the stab-resistance performance of ultra high molecular weight polyethylene fabric intercalated with nano-silica-fluid. Journal of Shanghai Jiaotong University (Science) 2013, 19, 102 -109.

AMA Style

Juan Gu, Xian-Cong Huang, Yan Li, Xin-Ling Wang, Mei-Wu Shi, Zhen Zheng. Improving the stab-resistance performance of ultra high molecular weight polyethylene fabric intercalated with nano-silica-fluid. Journal of Shanghai Jiaotong University (Science). 2013; 19 (1):102-109.

Chicago/Turabian Style

Juan Gu; Xian-Cong Huang; Yan Li; Xin-Ling Wang; Mei-Wu Shi; Zhen Zheng. 2013. "Improving the stab-resistance performance of ultra high molecular weight polyethylene fabric intercalated with nano-silica-fluid." Journal of Shanghai Jiaotong University (Science) 19, no. 1: 102-109.

Journal article
Published: 13 June 2013 in Polymer Composites
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ACS Style

Changwei Gu; Xiancong Huang; Meiwu Shi; Man Zhang; Xin-Ling Wang; Zhen Zheng. Bio-inspired layer-by-layer assembled hybrid films for improvement of mechanical properties. Polymer Composites 2013, 34, 1261 -1268.

AMA Style

Changwei Gu, Xiancong Huang, Meiwu Shi, Man Zhang, Xin-Ling Wang, Zhen Zheng. Bio-inspired layer-by-layer assembled hybrid films for improvement of mechanical properties. Polymer Composites. 2013; 34 (8):1261-1268.

Chicago/Turabian Style

Changwei Gu; Xiancong Huang; Meiwu Shi; Man Zhang; Xin-Ling Wang; Zhen Zheng. 2013. "Bio-inspired layer-by-layer assembled hybrid films for improvement of mechanical properties." Polymer Composites 34, no. 8: 1261-1268.

Journal article
Published: 13 March 2013 in Polymer Bulletin
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Linear polyurethane was synthesized by Diels–Alder (DA) reaction between a polyurethane prepolymer end-capped with furan rings (MPF) and bismaleimide (BMI). The polymerization kinetics were studied following a preliminary kinetic study of the DA reaction between furfuryl alcohol (FA) and BMI compounds by attenuated total reflection infrared, ultraviolet–visible and in situ 1H NMR spectroscopies, where in situ 1H NMR spectroscopy was selected as the analytical method of choice to study the DA reaction between MPF and BMI. The results showed that the reaction followed second-order kinetics, and the most beneficial experimental conditions to maximize conversion were identified.

ACS Style

Xuanxuan Liu; Pengfei Du; Li Liu; Zhen Zheng; Xinling Wang; Thomas Joncheray; Yuefan Zhang. Kinetic study of Diels–Alder reaction involving in maleimide–furan compounds and linear polyurethane. Polymer Bulletin 2013, 70, 2319 -2335.

AMA Style

Xuanxuan Liu, Pengfei Du, Li Liu, Zhen Zheng, Xinling Wang, Thomas Joncheray, Yuefan Zhang. Kinetic study of Diels–Alder reaction involving in maleimide–furan compounds and linear polyurethane. Polymer Bulletin. 2013; 70 (8):2319-2335.

Chicago/Turabian Style

Xuanxuan Liu; Pengfei Du; Li Liu; Zhen Zheng; Xinling Wang; Thomas Joncheray; Yuefan Zhang. 2013. "Kinetic study of Diels–Alder reaction involving in maleimide–furan compounds and linear polyurethane." Polymer Bulletin 70, no. 8: 2319-2335.

Journal article
Published: 30 April 2012 in Composites Part B: Engineering
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This study investigates in detail the effects of processing parameters (pressure and temperature) on the internal structure and interfacial compatibility of unidirectional (UD) sheets of ultrahigh molecular weight polyethylene (UHMWPE) fiber/styrene–ethylene–butylene–styrene (SEBS) resin composites by dynamic mechanical thermal analysis (DMTA) and T-peel tests. The variation of storage moduli of the composites with the processing pressure indicate that almost all of the resin phase had changed into the interfacial phase; the tan δ curves also testified that the ethylene–butylene (EB) segment of SEBS matrix was entangled with the molecular chains of polyethylene (PE) fibers. Moreover, the result of the T-peel tests of composites indicated that the pressure produces more significant changes than the temperature for both monofilm and no-film UD composites. Besides, the latter had higher adhesion strengths under the same processing conditions due to increased adhesion between the fiber and the resin. Next, high-density polyethylene (HDPE) modified SEBS resin was used as the matrix of the composites. Their interfacial adhesion strengths were found to increase slightly and the DMTA curves indicate that the crystallinity of the modified matrix increased with the content of HDPE resin. All of these benefit the improvement of the protection property of the composites.

ACS Style

Zhen Zheng; Xiancong Huang; Yan Li; Nianci Yang; Xinling Wang; Meiwu Shi. Influence factors of internal structure and interfacial compatibility of UHMWPE fiber/SEBS resin composites: Processing parameters, structure of fiber and nature of resin. Composites Part B: Engineering 2012, 43, 1538 -1544.

AMA Style

Zhen Zheng, Xiancong Huang, Yan Li, Nianci Yang, Xinling Wang, Meiwu Shi. Influence factors of internal structure and interfacial compatibility of UHMWPE fiber/SEBS resin composites: Processing parameters, structure of fiber and nature of resin. Composites Part B: Engineering. 2012; 43 (3):1538-1544.

Chicago/Turabian Style

Zhen Zheng; Xiancong Huang; Yan Li; Nianci Yang; Xinling Wang; Meiwu Shi. 2012. "Influence factors of internal structure and interfacial compatibility of UHMWPE fiber/SEBS resin composites: Processing parameters, structure of fiber and nature of resin." Composites Part B: Engineering 43, no. 3: 1538-1544.

Journal article
Published: 16 March 2012 in Research on Chemical Intermediates
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The structures of radicals generated in the oxidation process of trialkylborane were detected based on ultra-high performance liquid chromatography-quadrupole-time-of-flight mass spectrometry (UPLC/Q-ToF MS) combined with the spin trapping method. Structural identification of the spin adducts produced by 5,5-dimethyl-1-pyrroline-1-oxide with radicals could be carried out unambiguously by combining the data obtained by UPLC/Q-ToF MS analyses. Then the oxidation mechanism was described. To specify the inter-relationships between the oxidation process of trialkylborane and the concomitant radical chemistry, four kinds of alkanes providing different H-abstraction reactivity to alkoxy radical were chosen as radical capturers. The final oxidation products of trialkylborane were characterized by GC–MS and 11B-NMR. The results indicted that the radical content was not only affected by the oxidation degree of trialkylborane, but also done by the activity of alkane. Especially the hydrogen atom abstraction by n-butoxy radical played an important role in the oxidation process of tributylborane, which would promote the oxidizability of tributylborane and deepen the oxidation degree of tributylborane.

ACS Style

Shujuan Liu; Zhen Zheng; Minrui Li; Xinling Wang. Study of the radical chemistry promoted by tributylborane. Research on Chemical Intermediates 2012, 38, 1893 -1907.

AMA Style

Shujuan Liu, Zhen Zheng, Minrui Li, Xinling Wang. Study of the radical chemistry promoted by tributylborane. Research on Chemical Intermediates. 2012; 38 (8):1893-1907.

Chicago/Turabian Style

Shujuan Liu; Zhen Zheng; Minrui Li; Xinling Wang. 2012. "Study of the radical chemistry promoted by tributylborane." Research on Chemical Intermediates 38, no. 8: 1893-1907.

Journal article
Published: 26 February 2012 in Polymer Composites
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Poly(urethane‐co‐vinyl imidazole) (PUVI)/graphene nanocomposites were facilely prepared by a kind of noncovalent way. Herein, the 1‐vinylimidazole acted as dispersion agent as well as monomer, graphene was uniformly dispersed in the copolymer matrix without obviously agglomeration. A significant enhancement of mechanical and thermal properties of the PUVI/graphene nanocomposites were obtained at low graphene loading; specifically, a 147% improvement of tensile strength, a nearly 10 times increase of elastic modulus and a 12°C enhancement of thermal decomposition temperature were achieved at a graphene loading of 1.5 wt%. Moreover, the volume resistivity of the PUVI/graphene nanocomposites decreased by an order of magnitude after adding 0.5 wt% graphene, demonstrating an obvious change in the electrical property of the nanocomposites prepared. POLYM. COMPOS. 2012. © 2012 Society of Plastics Engineers

ACS Style

Zhixin Cai; Li Liu; Zhen Zheng; Xinling Wang. Poly(urethane-co -vinyl imidazole)/graphene nanocomposites. Polymer Composites 2012, 33, 459 -466.

AMA Style

Zhixin Cai, Li Liu, Zhen Zheng, Xinling Wang. Poly(urethane-co -vinyl imidazole)/graphene nanocomposites. Polymer Composites. 2012; 33 (4):459-466.

Chicago/Turabian Style

Zhixin Cai; Li Liu; Zhen Zheng; Xinling Wang. 2012. "Poly(urethane-co -vinyl imidazole)/graphene nanocomposites." Polymer Composites 33, no. 4: 459-466.

Journal article
Published: 20 July 2010 in Journal of Applied Polymer Science
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ACS Style

Jun Gu; Jiaming Lu; Xiancong Huang; Xinling Wang; Zhen Zheng. Polystyrene/vinyl ester resin/styrene thermoplastic elastomer composites: Miscibility, morphology, and mechanical properties. Journal of Applied Polymer Science 2010, 119, 93 -101.

AMA Style

Jun Gu, Jiaming Lu, Xiancong Huang, Xinling Wang, Zhen Zheng. Polystyrene/vinyl ester resin/styrene thermoplastic elastomer composites: Miscibility, morphology, and mechanical properties. Journal of Applied Polymer Science. 2010; 119 (1):93-101.

Chicago/Turabian Style

Jun Gu; Jiaming Lu; Xiancong Huang; Xinling Wang; Zhen Zheng. 2010. "Polystyrene/vinyl ester resin/styrene thermoplastic elastomer composites: Miscibility, morphology, and mechanical properties." Journal of Applied Polymer Science 119, no. 1: 93-101.

Journal article
Published: 15 September 2009 in Journal of Polymer Science
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ACS Style

Shujuan Liu; Liying Tian; Zhen Zheng; Xinling Wang. Study on the optical properties of sulfur-containing poly(methyl methacrylate)-inorganic hybrid. Journal of Polymer Science 2009, 113, 3498 -3503.

AMA Style

Shujuan Liu, Liying Tian, Zhen Zheng, Xinling Wang. Study on the optical properties of sulfur-containing poly(methyl methacrylate)-inorganic hybrid. Journal of Polymer Science. 2009; 113 (6):3498-3503.

Chicago/Turabian Style

Shujuan Liu; Liying Tian; Zhen Zheng; Xinling Wang. 2009. "Study on the optical properties of sulfur-containing poly(methyl methacrylate)-inorganic hybrid." Journal of Polymer Science 113, no. 6: 3498-3503.

Journal article
Published: 01 January 2008 in Composite Interfaces
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A new testing method was used to observe on-line the dynamic wetting course of liquid resins on PE fabric. The measure procedures and data processing were introduced in detail. To aim at some applications of vinylester resins/polyethylene fiber composites, vinylester resins (VRs) were at first modified by three kinds of additives, including elastomer, liquid rubber and isocyanate-terminated prepolymer. Then the wetting behaviors of these modified resins on the surface polyethylene (PE) materials were observed. After they were modified by six kinds of elastomers, the infiltrate-steady-times of these resins on the surface of PE fabric all increased; only the contact angle of natural rubber-modified VR on the surface of PE film decreased. After VRs were toughened by three kinds of liquid rubbers, their wetting velocities all became slower and the contact angles on the surface of PE film all decreased. In addition, VRs were also modified by three kinds of isocyanate-terminated prepolymers, which were the products of different hydroxyl-terminated polymers reacted with methylene bisphenyl isocyanate and whose structures were characterized by means of GPC, DSC and FT-IR, respectively. The wetting state of these modified resins on the surface of PE materials suggested that the interfacial compatibility of modified VRs and PE fabric did not decrease at the same time when the other properties of vinylester resins changed.

ACS Style

Zhen Zheng; Xinling Wang; Xiancong Huang; Meiwu Shi. Wetting behavior of modified vinylester resins on the surface of UHMWPE materials. Composite Interfaces 2008, 15, 35 -48.

AMA Style

Zhen Zheng, Xinling Wang, Xiancong Huang, Meiwu Shi. Wetting behavior of modified vinylester resins on the surface of UHMWPE materials. Composite Interfaces. 2008; 15 (1):35-48.

Chicago/Turabian Style

Zhen Zheng; Xinling Wang; Xiancong Huang; Meiwu Shi. 2008. "Wetting behavior of modified vinylester resins on the surface of UHMWPE materials." Composite Interfaces 15, no. 1: 35-48.

Journal article
Published: 01 January 2007 in Journal of Applied Polymer Science
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ACS Style

Xiju Yu; Zhen Zheng; Jiaming Lu; Xinling Wang. Morphology and mechanical properties of styrene–ethylene/butylene–styrene triblock copolymer/high-density polyethylene composites. Journal of Applied Polymer Science 2007, 107, 726 -731.

AMA Style

Xiju Yu, Zhen Zheng, Jiaming Lu, Xinling Wang. Morphology and mechanical properties of styrene–ethylene/butylene–styrene triblock copolymer/high-density polyethylene composites. Journal of Applied Polymer Science. 2007; 107 (2):726-731.

Chicago/Turabian Style

Xiju Yu; Zhen Zheng; Jiaming Lu; Xinling Wang. 2007. "Morphology and mechanical properties of styrene–ethylene/butylene–styrene triblock copolymer/high-density polyethylene composites." Journal of Applied Polymer Science 107, no. 2: 726-731.

Journal article
Published: 01 December 2006 in e-Polymers
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A series of poly(vinylidene fluoride)s (PVDFs) is synthesized in supercritical carbon dioxide (sc-CO2). The influences of polymerization pressure, molecular weight distribution and H-H defect concentration on the crystallization of PVDF have been studied in combination with differential scanning calorimetry (DSC), wide-angle X-ray diffraction (WAXRD) and Fourier transform infrared spectroscopy (FT-IR) measurements. The result shows that the morphology, molecular weights, polydispersity and head-to-head (H-H) defect concentrations of the PVDFs are affected by the reaction pressure and good solubility generated from sc-CO2. Especially, the sc-CO2 polymerization has greatly improved the crystallization mode of the obtained PVDFs such as the complete degree of crystallinity, crystallinity and the crystal phase. This will create more comprehensive application fields for PVDF.

ACS Style

Zhendong Shi; Zhen Zheng; Xiaoli Su; Xinling Wang. The Synthesis and Crystallization of Poly(vinylidene fluoride) in Supercritical CO2. e-Polymers 2006, 6, 979 -993.

AMA Style

Zhendong Shi, Zhen Zheng, Xiaoli Su, Xinling Wang. The Synthesis and Crystallization of Poly(vinylidene fluoride) in Supercritical CO2. e-Polymers. 2006; 6 (1):979-993.

Chicago/Turabian Style

Zhendong Shi; Zhen Zheng; Xiaoli Su; Xinling Wang. 2006. "The Synthesis and Crystallization of Poly(vinylidene fluoride) in Supercritical CO2." e-Polymers 6, no. 1: 979-993.