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Jianjun Lu
College of Textile Engineering, Taiyuan University of Technology, Taiyuan 030024, Shanxi, China

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Journal article
Published: 03 August 2021 in Molecular Catalysis
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L-lysine is used as a crystallization regulator, and a two-step synthesis method is adopted in a concentrated gel system, which provides a new route to synthesize of nano-sized TS-1 zeolite. The new synthesis strategy was used to successfully synthesize TS-1 zeolite with a particle size less than 100 nm. The rate of crystal nucleation is faster than the crystal growth at the low temperature in the first step. Introduction of L-lysine can prevent crystal growth to form nano-sized TS-1 zeolite at the high temperature in the second step. Meanwhile, L-lysine decrease the pH value of the gel system, which is favorable for Ti atoms to incorporate the TS-1 framework. TS-1 nanozeolite can effectively reduce the diffusion resistance, and nanozeolite has a large specific surface area and high stability. Therefore, TS-1 nanozeolite exhibits the excellent catalytic performance during the hydroxylation of benzene. The conversion of benzene has been greatly improved and the types of by-products are effectively reduced. The conversion of benzene reached 50.2%, and the yield of phenol was 30.8% without by-product benzoquinone. TS-1 nano-zeolite as a catalyst for benzene hydroxylation shows great potential in industrial application.

ACS Style

Mengzhe Li; Xiaohua Shen; Miaoqing Liu; Jianjun Lu. Synthesis TS-1 nanozelites via L-lysine assisted route for hydroxylation of Benzene. Molecular Catalysis 2021, 513, 111779 .

AMA Style

Mengzhe Li, Xiaohua Shen, Miaoqing Liu, Jianjun Lu. Synthesis TS-1 nanozelites via L-lysine assisted route for hydroxylation of Benzene. Molecular Catalysis. 2021; 513 ():111779.

Chicago/Turabian Style

Mengzhe Li; Xiaohua Shen; Miaoqing Liu; Jianjun Lu. 2021. "Synthesis TS-1 nanozelites via L-lysine assisted route for hydroxylation of Benzene." Molecular Catalysis 513, no. : 111779.

Article
Published: 26 April 2021 in Fibers and Polymers
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The hygroscopic and dyeable polyphenylene sulfide (PPS) composite fiber was prepared using a twin-screw extruder and a melt spinning machine. A new dyeing process was proposed and the moisture absorption and dyeing mechanism of the composite fiber was analyzed. The results show that sodium polyacrylate (PAAS) is uniformly dispersed in the PPS matrix and is compatible with PPS at the macromolecular level. The thermal properties of the composite fibers are basically unchanged, and the crystallinity is slightly reduced. With the increase of PAAS content, the normal moisture regain of the composite fiber reached 2.11 % from 0.21 %, and the contact angle decreased from 73.8 ° to 52.3 °. Under the new dyeing technology, the dyeing rate of the composite fiber reached 93 %, and the washing fastness was grade 5. The mechanism of hygroscopicity and dyeing of macromolecular space networks and polyelectrolyte was proposed.

ACS Style

Jingyi Ren; Dandan Lian; Jianjun Lu. The Performance Promotion of Polyphenylene Sulfide Fibers Based on the Hygroscopic and Dyeable Characteristics. Fibers and Polymers 2021, 22, 1285 -1295.

AMA Style

Jingyi Ren, Dandan Lian, Jianjun Lu. The Performance Promotion of Polyphenylene Sulfide Fibers Based on the Hygroscopic and Dyeable Characteristics. Fibers and Polymers. 2021; 22 (5):1285-1295.

Chicago/Turabian Style

Jingyi Ren; Dandan Lian; Jianjun Lu. 2021. "The Performance Promotion of Polyphenylene Sulfide Fibers Based on the Hygroscopic and Dyeable Characteristics." Fibers and Polymers 22, no. 5: 1285-1295.

Journal article
Published: 02 January 2021 in Integrated Ferroelectrics
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Silicalite-1 nanosheets catalyst with a hierarchical architecture was hydrothermally synthesized using [C18H37-N+(CH3)2-C6H12-N+(CH3)2-C6H13](Br)−2 as template. It has been studied systematically by investigating the influence of different synthesis parameters and crystallization kinetics under tumbling conditions. Highly crystalline silicalite-1 nanosheets with large external surface was obtained by regulating the crystallization time and the amount of water, template and the alkalinity. It was examined as catalyst for vapor-phase Beckmann rearrangement of cyclohexanone oxime to caprolactam and exhibited an excellent catalytic performance and long catalytic lifetime. This can be attributed to nest silanol groups located on the large external surface of the nanosheets. Furthermore, the high mesoporosity of nanosheets shorten the diffusion path length and reduce coking deposition, which remarkably improve catalyst stability.

ACS Style

Chao Ge; Xiaofeng Li; Zhou Zhao; Zhifeng Yan; Dandan Lian; Jianjun Lu. Preparation of Silicalite-1 Nanosheets and its Application in Vapor-Phase Beckmann Rearrangement of Cyclohexanone Oxime. Integrated Ferroelectrics 2021, 213, 12 -20.

AMA Style

Chao Ge, Xiaofeng Li, Zhou Zhao, Zhifeng Yan, Dandan Lian, Jianjun Lu. Preparation of Silicalite-1 Nanosheets and its Application in Vapor-Phase Beckmann Rearrangement of Cyclohexanone Oxime. Integrated Ferroelectrics. 2021; 213 (1):12-20.

Chicago/Turabian Style

Chao Ge; Xiaofeng Li; Zhou Zhao; Zhifeng Yan; Dandan Lian; Jianjun Lu. 2021. "Preparation of Silicalite-1 Nanosheets and its Application in Vapor-Phase Beckmann Rearrangement of Cyclohexanone Oxime." Integrated Ferroelectrics 213, no. 1: 12-20.

Short communication
Published: 05 November 2019 in Tetrahedron Letters
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Vistusertib (AZD2014) is a potent, selective inhibitor of mTOR kinase. Prompted by its fascinating biological activity, an efficient and practical synthesis of Vistusertib has been developed from 3-acetylbenzoic acid through six steps in 48% overall yield.

ACS Style

Guobing Shen; Miaoqing Liu; Jianjun Lu; Tao Meng. Practical synthesis of Vistusertib (AZD2014), an ATP competitive mTOR inhibitor. Tetrahedron Letters 2019, 60, 151333 .

AMA Style

Guobing Shen, Miaoqing Liu, Jianjun Lu, Tao Meng. Practical synthesis of Vistusertib (AZD2014), an ATP competitive mTOR inhibitor. Tetrahedron Letters. 2019; 60 (52):151333.

Chicago/Turabian Style

Guobing Shen; Miaoqing Liu; Jianjun Lu; Tao Meng. 2019. "Practical synthesis of Vistusertib (AZD2014), an ATP competitive mTOR inhibitor." Tetrahedron Letters 60, no. 52: 151333.

Journal article
Published: 03 September 2019 in Processes
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Low-cost activated carbons were prepared from waste polyurethane foam by physical activation with CO2 for the first time and chemical activation with Ca(OH)2, NaOH, or KOH. The activation conditions were optimized to produce microporous carbons with high CO2 adsorption capacity and CO2/N2 selectivity. The sample prepared by physical activation showed CO2/N2 selectivity of up to 24, much higher than that of chemical activation. This is mainly due to the narrower microporosity and the rich N content produced during the physical activation process. However, physical activation samples showed inferior textural properties compared to chemical activation samples and led to a lower CO2 uptake of 3.37 mmol·g−1 at 273 K. Porous carbons obtained by chemical activation showed a high CO2 uptake of 5.85 mmol·g−1 at 273 K, comparable to the optimum activated carbon materials prepared from other wastes. This is mainly attributed to large volumes of ultra-micropores (

ACS Style

Chao Ge; Dandan Lian; Shaopeng Cui; Jie Gao; Jianjun Lu. Highly Selective CO2 Capture on Waste Polyurethane Foam-Based Activated Carbon. Processes 2019, 7, 592 .

AMA Style

Chao Ge, Dandan Lian, Shaopeng Cui, Jie Gao, Jianjun Lu. Highly Selective CO2 Capture on Waste Polyurethane Foam-Based Activated Carbon. Processes. 2019; 7 (9):592.

Chicago/Turabian Style

Chao Ge; Dandan Lian; Shaopeng Cui; Jie Gao; Jianjun Lu. 2019. "Highly Selective CO2 Capture on Waste Polyurethane Foam-Based Activated Carbon." Processes 7, no. 9: 592.

Journal article
Published: 27 June 2019 in Journal of Polymer Engineering
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Polyphenylene sulfide (PPS) is easily oxidized at high temperature, which greatly limits its applications. In this study, a nano-SiO2 compound antioxidant (SiO2-g-AO) was prepared and incorporated into PPS by melt compounding to obtain PPS/SiO2-g-AO composites. SiO2-g-AO was prepared by reacting 3-(3,5-di-tert-butyl-4-hydroxyphenyl) (antioxidant AO) with an aminosilane coupling agent (KH792). Fourier transform infrared (FTIR) spectroscopy, energy dispersive spectroscopy (EDS) and thermogravimetric analysis (TGA) confirmed that the antioxidant AO was successfully immobilized on the surface of SiO2 and the thermal stability was improved. Scanning electron microscopy (SEM) images showed that SiO2-g-AO was uniformly dispersed in PPS. It has been found that the crystallinity and mechanical properties of PPS composites improved, and the dynamic oxidation induction temperature (OIT) increased in the range of 16.7°C–21.1°C. A synergistic anti-oxidation model of nanoparticles and antioxidants, namely a multi-stage antioxidant system, was established by comprehensive analysis of experimental results. The synergistic anti-oxidation model provides a new idea for the antioxidant modification of polymer composites.

ACS Style

Wenxin Han; Jianjun Lu; Jingyi Ren; Dandan Lian; Junde Xing. Preparation of nano-SiO2 compound antioxidant and its antioxidant effect on polyphenylene sulfide. Journal of Polymer Engineering 2019, 39, 556 -564.

AMA Style

Wenxin Han, Jianjun Lu, Jingyi Ren, Dandan Lian, Junde Xing. Preparation of nano-SiO2 compound antioxidant and its antioxidant effect on polyphenylene sulfide. Journal of Polymer Engineering. 2019; 39 (6):556-564.

Chicago/Turabian Style

Wenxin Han; Jianjun Lu; Jingyi Ren; Dandan Lian; Junde Xing. 2019. "Preparation of nano-SiO2 compound antioxidant and its antioxidant effect on polyphenylene sulfide." Journal of Polymer Engineering 39, no. 6: 556-564.

Article
Published: 15 March 2019 in Catalysis Letters
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A new route to synthesis hierarchical Ti-rich TS-1 with uniform intracrystalline mesopores, uniform crystal size and the higher Ti content has been developed by using the environmental-friendly and cheap surfactant Triton X-100 as the assisted template agent and (NH4)2CO3 as crystallization-mediating agent. In this way, the surface area and pore volume of the resulting materials can be adjusted by the Triton X-100 content. The catalytic properties of the Nano-size hierarchical Ti-rich TS-1 were investigated by hydroxylation of benzene to phenol with H2O2 as oxidizing agent and deionized water as solvent. Due to the combination of hierarchical pores and high titanium content, the hierarchical Ti-rich TS-1 shows improved catalytic activity in the oxidation of benzene.

ACS Style

Xiaohua Shen; Jingjing Wang; Miaoqing Liu; Mengzhe Li; Jianjun Lu. Preparation of the Hierarchical Ti-Rich TS-1 via TritonX-100-Assisted Synthetic Strategy for the Direct Oxidation of Benzene. Catalysis Letters 2019, 149, 2586 -2596.

AMA Style

Xiaohua Shen, Jingjing Wang, Miaoqing Liu, Mengzhe Li, Jianjun Lu. Preparation of the Hierarchical Ti-Rich TS-1 via TritonX-100-Assisted Synthetic Strategy for the Direct Oxidation of Benzene. Catalysis Letters. 2019; 149 (9):2586-2596.

Chicago/Turabian Style

Xiaohua Shen; Jingjing Wang; Miaoqing Liu; Mengzhe Li; Jianjun Lu. 2019. "Preparation of the Hierarchical Ti-Rich TS-1 via TritonX-100-Assisted Synthetic Strategy for the Direct Oxidation of Benzene." Catalysis Letters 149, no. 9: 2586-2596.

Research article
Published: 25 June 2018 in High Performance Polymers
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More and more polyimide (PI) mixed matrix membranes (MMMs) have been reported for gas separation. In this study, a novel PI MMM, named as PI/SNW-1 and composed of PI and Schiff base network (SNW) type covalent organic frameworks (COFs) SNW-1, was used for gas permeation measurements of carbon dioxide (CO2) and methane (CH4). The prepared PI/SNW-1 was investigated by the Fourier transform infrared spectroscopy, the field emission scanning electron microscopy, and the thermal gravimetric analysis. The results indicated that PI/SNW-1 had maintained a high thermal stability and uniform distribution of filler. Compared with the pure PI membrane, MMMs showed an increment of 48.7% in ideal selectivity of CO2/CH4 and an enhancement of 106.4% in CO2 permeability at 5 wt% SNW-1. The enhancement of permeability and selectivity was mainly attributed to the high porosity of SNW-1, the specific sorption affinity for CO2, and the close interface interaction with the PI matrix. It can be seen that PI/SNW-1 has a great potential for actual gas separation.

ACS Style

Jiyang Liu; Miaoqing Liu; Jianjun Lu. Fabrication of polyimide and covalent organic frameworks mixed matrix membranes by in situ polymerization for preliminary exploration of CO2/CH4 separation. High Performance Polymers 2018, 31, 671 -678.

AMA Style

Jiyang Liu, Miaoqing Liu, Jianjun Lu. Fabrication of polyimide and covalent organic frameworks mixed matrix membranes by in situ polymerization for preliminary exploration of CO2/CH4 separation. High Performance Polymers. 2018; 31 (6):671-678.

Chicago/Turabian Style

Jiyang Liu; Miaoqing Liu; Jianjun Lu. 2018. "Fabrication of polyimide and covalent organic frameworks mixed matrix membranes by in situ polymerization for preliminary exploration of CO2/CH4 separation." High Performance Polymers 31, no. 6: 671-678.

Article
Published: 05 February 2018 in Journal of Heterocyclic Chemistry
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An efficient tandem route to the synthesis of triazacyclopenta[cd]indenone derivatives of the cyclazine family has been developed. Target compounds were obtained in moderate to good yields by Groebke–Blackburn–Bienaymé reaction involving a potassium carbonate promoted intramolecular aminolysis. This in turn will set the stage for a wide application of this useful reaction for the synthesis of structurally diverse polyheterocyclic skeletons containing the imidazo[1,2‐a]pyridine ring.

ACS Style

Guo-Bing Shen; Ting Yu; Yong-Liang Zhang; Lan-Ping Ma; Lin Chen; Jian-Jun Lu; Tao Meng. Facile Synthesis of New Functionalized Triazacyclopenta[cd]indenones Through a Multicomponent Reaction Followed by an Intramolecular Aminolysis. Journal of Heterocyclic Chemistry 2018, 55, 814 -820.

AMA Style

Guo-Bing Shen, Ting Yu, Yong-Liang Zhang, Lan-Ping Ma, Lin Chen, Jian-Jun Lu, Tao Meng. Facile Synthesis of New Functionalized Triazacyclopenta[cd]indenones Through a Multicomponent Reaction Followed by an Intramolecular Aminolysis. Journal of Heterocyclic Chemistry. 2018; 55 (4):814-820.

Chicago/Turabian Style

Guo-Bing Shen; Ting Yu; Yong-Liang Zhang; Lan-Ping Ma; Lin Chen; Jian-Jun Lu; Tao Meng. 2018. "Facile Synthesis of New Functionalized Triazacyclopenta[cd]indenones Through a Multicomponent Reaction Followed by an Intramolecular Aminolysis." Journal of Heterocyclic Chemistry 55, no. 4: 814-820.

Journal article
Published: 01 April 2016 in Journal of Industrial and Engineering Chemistry
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Amino ionic liquids modified superparamagnetic mesoporous core/shell nanocomposite ([email protected]@[email protected]) was synthesized to remove orange II and amaranth from water. Due to the multiple active sites of the introduced ionic liquids, the adsorbent presents superior adsorption performance and instantaneous adsorption capacity. The maximum adsorption capacities are reached at pH 2 due to the protonation of amino groups, which are 153.06 and 84.40 mg g−1 for orange II and amaranth, respectively. The good stability, rapid adsorption kinetics, large adsorption capacity, and high separation efficiency make [email protected]@[email protected] an efficient adsorbent for removing anionic contaminant from water.

ACS Style

Jingjing Cheng; Lijuan Shi; Jianjun Lu. Amino ionic liquids-modified magnetic core/shell nanocomposite as an efficient adsorbent for dye removal. Journal of Industrial and Engineering Chemistry 2016, 36, 206 -214.

AMA Style

Jingjing Cheng, Lijuan Shi, Jianjun Lu. Amino ionic liquids-modified magnetic core/shell nanocomposite as an efficient adsorbent for dye removal. Journal of Industrial and Engineering Chemistry. 2016; 36 ():206-214.

Chicago/Turabian Style

Jingjing Cheng; Lijuan Shi; Jianjun Lu. 2016. "Amino ionic liquids-modified magnetic core/shell nanocomposite as an efficient adsorbent for dye removal." Journal of Industrial and Engineering Chemistry 36, no. : 206-214.

Journal article
Published: 26 October 2015 in Journal of Materials Science
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A novel aromatic diamine substituted with a 1,10-phenanthroline group in the side chain, N-(1,10-phenanthroline-5-yl)-3,5-diaminobenzamide, was synthesized and used to prepare polyimide via polycondensation with 4,4′-(hexafluoroisopropylidene)diphthalic anhydride. Subsequently, the europium(III) coordination polyimide was prepared using the polyimide as a macromolecular ligand and 2-thenoyltrifluoroacetone as a co-ligand. Their structures were systematically characterized by mass spectroscopies, Fourier transform infrared spectroscopy, 1H nuclear magnetic resonance, elemental analysis, and inductively coupled plasma. The obtained polyimide and europium(III) coordination polyimide exhibit excellent thermal stability and solubility in many polar aprotic solvents. The europium(III) coordination polyimide was demonstrated to emit strong characteristic fluorescence emission of europium(III) at 615 nm, showing promising potential in optical display devices.

ACS Style

Xuping Li; Guobing Shen; Xuting Jin; Miaoqing Liu; Lijuan Shi; Jianjun Lu. Novel polyimide containing 1,10-phenanthroline and its europium(III) complex: synthesis, characterization, and luminescence properties. Journal of Materials Science 2015, 51, 2072 -2078.

AMA Style

Xuping Li, Guobing Shen, Xuting Jin, Miaoqing Liu, Lijuan Shi, Jianjun Lu. Novel polyimide containing 1,10-phenanthroline and its europium(III) complex: synthesis, characterization, and luminescence properties. Journal of Materials Science. 2015; 51 (4):2072-2078.

Chicago/Turabian Style

Xuping Li; Guobing Shen; Xuting Jin; Miaoqing Liu; Lijuan Shi; Jianjun Lu. 2015. "Novel polyimide containing 1,10-phenanthroline and its europium(III) complex: synthesis, characterization, and luminescence properties." Journal of Materials Science 51, no. 4: 2072-2078.

Journal article
Published: 02 September 2015 in Macromolecular Research
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A novel 1,10-phenanthroline-functionalized polyimide (CMPI-Phen) was prepared as polymer matrix by the nucleophilic substitution reaction between chloromethylated polyimide (CMPI) and 5-amino-1,10-phenanthroline (NH2-Phen). Then, two kinds of luminescent materials of 1,10-phenanthroline-functionalized polyimide containing Eu(III) complexes, were obtained by two different methods. Their structures and properties were characterized by Fourier transform infrared (FTIR) spectroscopy, 1H nuclear magnetic resonance (NMR) spectroscopy, elemental analysis, inductively coupled plasma (ICP), gel permeation chromatography (GPC), thermogravimetric analysis (TGA), X-ray diffraction (XRD), luminescence spectrometry, and luminescence decay analysis. Investigations revealed that both the CMPI-Phen-Eu(III) and CMPI-Phen-Eu(TTA)3 display highly efficient red emissions, suggesting their potential application as luminescent materials. However, compared with CMPI-Phen-Eu(III), CMPI-Phen-Eu(TTA)3, where TTA stands for thenoyltrifluoroacetone, exhibits more excellent and stable fluorescence intensity and longer luminescence lifetime (134.30 μs). The weight-average molecular weights of CMPI-Phen-Eu(III) and CMPI-Phen-Eu(TTA)3 are 2.40×104 and 3.11×104, respectively. The Eu contents of CMPI-Phen-Eu(TTA)3 and CMPI-Phen-Eu(III) were measured by ICP to be 7.00% and 5.92%, respectively. TGA demonstrated that both CMPI-Phen-Eu(III) and CMPI-Phen-Eu(TTA)3 have high thermal stability and their 5% loss weight temperatures were 356 and 280 °C, respectively. Moreover, both CMPI-Phen-Eu(III) and CMPI-Phen-Eu(TTA)3 were soluble in polar solvents such as dimethylformamide (DMF), dimethylacetamide (DMAc), 1-methyl-2-pyrrolidone (NMP), and dimethylsulfoxide (DMSO) under heating conditions, and could be easily cast into tough thin films.

ACS Style

Zhiyong Chen; Xuping Li; Xuting Jin; Lijuan Shi; Miaoqing Liu; Zhilin Sun; Jianjun Lu. Preparation, characterization and luminescence properties of a novel 1,10-phenanthroline-functionalized polyimide and its europium(III) complexes. Macromolecular Research 2015, 23, 830 -837.

AMA Style

Zhiyong Chen, Xuping Li, Xuting Jin, Lijuan Shi, Miaoqing Liu, Zhilin Sun, Jianjun Lu. Preparation, characterization and luminescence properties of a novel 1,10-phenanthroline-functionalized polyimide and its europium(III) complexes. Macromolecular Research. 2015; 23 (9):830-837.

Chicago/Turabian Style

Zhiyong Chen; Xuping Li; Xuting Jin; Lijuan Shi; Miaoqing Liu; Zhilin Sun; Jianjun Lu. 2015. "Preparation, characterization and luminescence properties of a novel 1,10-phenanthroline-functionalized polyimide and its europium(III) complexes." Macromolecular Research 23, no. 9: 830-837.

Journal article
Published: 01 April 2015 in Materials Letters
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ACS Style

Xuting Jin; Lijuan Shi; Xuping Li; Miaoqing Liu; Jianjun Lu; Zhilin Sun. Synthesis and luminescent properties of novel polyimide-bound tris(2-thenoyltrifluoroacetonato) lanthanide(III) complexes. Materials Letters 2015, 145, 59 -62.

AMA Style

Xuting Jin, Lijuan Shi, Xuping Li, Miaoqing Liu, Jianjun Lu, Zhilin Sun. Synthesis and luminescent properties of novel polyimide-bound tris(2-thenoyltrifluoroacetonato) lanthanide(III) complexes. Materials Letters. 2015; 145 ():59-62.

Chicago/Turabian Style

Xuting Jin; Lijuan Shi; Xuping Li; Miaoqing Liu; Jianjun Lu; Zhilin Sun. 2015. "Synthesis and luminescent properties of novel polyimide-bound tris(2-thenoyltrifluoroacetonato) lanthanide(III) complexes." Materials Letters 145, no. : 59-62.

Journal article
Published: 01 August 2014 in Materials Letters
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ACS Style

Xiaozhu Shi; Junping Duan; Jianjun Lu; Miaoqing Liu; Lijuan Shi. A novel fabrication method of network-like polyimide/silica composite microspheres with a high SiO2 content. Materials Letters 2014, 128, 5 -8.

AMA Style

Xiaozhu Shi, Junping Duan, Jianjun Lu, Miaoqing Liu, Lijuan Shi. A novel fabrication method of network-like polyimide/silica composite microspheres with a high SiO2 content. Materials Letters. 2014; 128 ():5-8.

Chicago/Turabian Style

Xiaozhu Shi; Junping Duan; Jianjun Lu; Miaoqing Liu; Lijuan Shi. 2014. "A novel fabrication method of network-like polyimide/silica composite microspheres with a high SiO2 content." Materials Letters 128, no. : 5-8.

Journal article
Published: 01 June 2014 in Particuology
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ACS Style

Li Wang; Jianjun Lu; Miaoqing Liu; Li Lin; Jingjing Li. Preparation of porous polyimide microspheres by thermal degradation of block copolymers. Particuology 2014, 14, 63 -70.

AMA Style

Li Wang, Jianjun Lu, Miaoqing Liu, Li Lin, Jingjing Li. Preparation of porous polyimide microspheres by thermal degradation of block copolymers. Particuology. 2014; 14 ():63-70.

Chicago/Turabian Style

Li Wang; Jianjun Lu; Miaoqing Liu; Li Lin; Jingjing Li. 2014. "Preparation of porous polyimide microspheres by thermal degradation of block copolymers." Particuology 14, no. : 63-70.

Journal article
Published: 01 January 2011 in Micro & Nano Letters
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Polyimide (PI) microspheres with high precursor polymer concentration were successfully prepared using non-aqueous reverse emulsion polymerisation. The emulsion was composed of N, N-dimethyl formamide and liquid paraffin, in which Span85 was used as surfactant. The effect of Span85 concentration on the resulting PI product has been investigated. The results indicated that with the increase in Span85 concentration, the average diameter declined, and the size distribution became narrow. When the concentration of surfactant Span85 was around 0.15 w/w, a yellow-to-brown-coloured powder of PI microfine spheres was obtained, with an average particle size of 25.6 µm. As an emulsifier and a chain termination agent, surfactant Span85 chemically bonded to the growing polymer chains, and not only formed stable non-aqueous inverse emulsion but also increased precursor polymer concentration.

ACS Style

Jianjun Lu; Xiaoxia Zhang; Miaoqing Liu; Li Chen; Xingnan Li; Huimin Li; Peitong Xie; Li Lin. Fabrication of polyimide microspheres with high precursor polymer concentration. Micro & Nano Letters 2011, 6, 236 -239.

AMA Style

Jianjun Lu, Xiaoxia Zhang, Miaoqing Liu, Li Chen, Xingnan Li, Huimin Li, Peitong Xie, Li Lin. Fabrication of polyimide microspheres with high precursor polymer concentration. Micro & Nano Letters. 2011; 6 (4):236-239.

Chicago/Turabian Style

Jianjun Lu; Xiaoxia Zhang; Miaoqing Liu; Li Chen; Xingnan Li; Huimin Li; Peitong Xie; Li Lin. 2011. "Fabrication of polyimide microspheres with high precursor polymer concentration." Micro & Nano Letters 6, no. 4: 236-239.