Multiwall-carbon-nanotube (MWCNT)-cellulose/cellulose composite fibers with promoted mechanical and electronic activities were synthesized. Remarkably, the dispersion of MWCNTs in the composite fibers was facilitated through cellulose grafting, resulting in the tensile strength of the obtained MWCNT-cellulose/cellulose composite fibers being increased to 304.6 MPa with 10 wt% MWCNTs involved, which was almost 106.8% higher than that of pristine MWCNT/cellulose fibers with the same amount of MWCNTs. In addition, the electrical conductivity of the MWCNT-cellulose/cellulose composite fibers was enhanced to 1.3 × 10⁻¹ S cm⁻¹ with the dispersion of 10 wt% MWCNTs, which was almost 108 times higher than that of pristine MWCNT/cellulose fibers with the same amount of MWCNTs.

Cellulose has shown encouraging properties in many applications, such as energy storage, optical instrument and catalysis. In particular, cellulose films have shown potential applications in flexible transparent devices and are expected to replace indium-tin oxide (ITO). However, cellulose is highly hydrophilic and electrically insulating, which limits its scope of application. In this study, the conductivity (R_s = 40.3 Ω sq⁻¹), transparency (81.4%) and superhydrophobicity (static contact angle = 153.2°, sliding angle = 4.1°) of cellulose film (CTSC-P) are reported. First, before suction filtration to prepare the film, cellulose was oxidized to improve dispersibility and mechanical strength. Then, the obtained film was hydrophobically modified by grafting long-chain silanes on the surface, followed by electrospinning and electroless plating. In general, the design is an ingenious way to manufacture transparent, conductive, and super-hydrophobic films in the future, and is transformed into a flexible electronic technically feasible device.

The public’s requirements for a high-quality residential environment and the general improvement in ecological safety awareness have made renewable resource wood and products more favored by furniture, construction and other industries. However, on the one hand, the supply of natural forests is extremely limited, and on the other hand, the materials of artificial forests have defects such as low surface strength and poor dimensional stability due to a loose fiber structure, which restricts their promotion as an alternative to high-quality wood. In this paper, based on the mechanism of wood reinforcement, several reinforcement techniques, such as impregnation, compaction and surface modification, which are widely used in industry, are briefly introduced. On this basis, the possibility of impregnation as a pretreatment method, surface modification and densification to enhance wood was prospected. It is expected to provide reference for improving the added value of plantation wood and alleviating the contradiction between wood supply and demand.