添加氧化石墨烯的复合纤维素纤维的制备及性能。

Preparation and properties of composite cellulose fibres with the addition of graphene oxide.

机构信息

Faculty of Materials, Civil and Environmental Engineering, Institute of Textile Engineering and Polymer Materials, University of Bielsko-Biala, Willowa 2, 43-309 Bielsko-Biala, Poland.

Faculty of Materials, Civil and Environmental Engineering, Institute of Environmental Protection and Engineering, University of Bielsko-Biala, Willowa 2, 43-309 Bielsko-Biala, Poland.

出版信息

Carbohydr Polym. 2021 Feb 15;254:117436. doi: 10.1016/j.carbpol.2020.117436. Epub 2020 Nov 25.

DOI:10.1016/j.carbpol.2020.117436

PMID:33357909

Abstract

The paper presents the results of a study on the preparation of cellulose-based composite fibres (CEL) with graphene oxide addition (GO). Composite fibres (GO/CEL) were prepared via the wet spinning method from CEL solutions in 1-ethyl-3-methylimidazolium acetate (EMIMAc) that contained a nano-addition of GO dispersion in N,N-dimethylformamide (DMF). The GO contents of the composite fibres were 0, 0.21, 0.50, 0.98, and 1.97 % w w. The fibres were coagulated in two solvents: distilled water and methanol. The results demonstrated that the amount of GO additive and the type of coagulant significantly impact the physicochemical, mechanical and structural properties of the CEL and GO/CEL fibres. The use of distilled water in a coagulation bath causes a degree of crystallinity of 31.0-40.8 % (WAXS) and a shift in the thermal decomposition temperature (by approximately 19 °C) towards higher temperatures (TGA). The results demonstrate improvements in the mechanical properties of the GO/CEL fibres, which were at the level of 9.43-14.18 cN/tex. In addition, the GO/CEL fibres exhibit satisfactory GO dispersion throughout their volume.

摘要

本文介绍了一种通过湿纺法制备纤维素基复合纤维（CEL）并添加氧化石墨烯（GO）的研究结果。CEL 溶液由 1-乙基-3-甲基咪唑醋酸盐（EMIMAc）和纳米 GO 分散体在 N，N-二甲基甲酰胺（DMF）中组成，复合纤维（GO/CEL）由此制备而成。复合纤维中 GO 的含量分别为 0、0.21、0.50、0.98 和 1.97%（w/w）。纤维在两种溶剂中凝固：蒸馏水和甲醇。结果表明，GO 添加剂的用量和凝固剂的类型显著影响 CEL 和 GO/CEL 纤维的物理化学、机械和结构性能。在凝固浴中使用蒸馏水会导致 CEL 纤维的结晶度达到 31.0-40.8%（WAXS），热分解温度（约 19°C）向更高温度（TGA）移动。结果表明，GO/CEL 纤维的机械性能得到了改善，达到了 9.43-14.18 cN/tex。此外，GO/CEL 纤维在整个体积内都表现出良好的 GO 分散性。