%A LI Zhenqun, XU Duo, WEI Chunyan, QIAN Yongfang, LÜ Lihua %T Preparation of cotton stalk bast cellulose/graphene oxide fiber and its mechanical properties and adsorption capacity %0 Journal Article %D 2020 %J Journal of Textile Research %R 10.13475/j.fzxb.20190201606 %P 15-20 %V 41 %N 01 %U {http://www.fzxb.org.cn/CN/abstract/article_10812.shtml} %8 2020-01-15 %X

In order to improve the adsorption capacity of cellulose-based adsorbent fibers for cationic methylene blue dyes and the fiber strength, cotton stalk cellulose/graphene oxide (GO) fibers containing different mass fractions of GO were prepared by ultrasonic dispersion method and wet spinning method. The morphology and structure of the materials were analyzed by transmission electron microscopy, scanning electron microscopy and Fourier transform infrared spectroscopy. The effects of GO content on the breaking strength and adsorption capacity of the fibers were discussed. Fitting analysis was conducted on the experimental data of adsorption capacity. The results show that the breaking strength of the fiber increases first and then decreases with the increase of mass fraction of GO. When the mass fraction of GO was 0.4%, the fiber breaking strength peaked at 31.12 cN, which is 84% stronger than that without adding GO. The amount of methylene blue adsorption increases with the increase of GO mass fraction. The adsorption process conforms to the pseudo-second-order adsorption kinetic models and Langmuir isotherms adsorption model. The adsorption is related monolayer molecules, and the adsorption process is a spontaneous exothermic reaction.