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Water molecule “spinning cutter” controllably improving the performance of cellulosic fibers
Cellulose ( IF 5.7 ) Pub Date : 2020-06-23 , DOI: 10.1007/s10570-020-03301-8
Jianguo Li , Tao Tao , Chong Luo , Xi Liu , Xuhai Zhu , Liulian Huang , Xinhua Ouyang , Yonghao Ni , Lihui Chen

Abstract

High reactivity of dissolving pulp is the basic parameter for achieving the deeply advanced applications of natural cellulosic fiber in the sustainable society. Here we developed a simple yet effective strategy of microwave treatment to promote the reactive ability of pulp fibers. The microwave radiation can induce the rotation and vibration of water molecules due to the polarization effect, where the water molecules functioned as the “spinning cutter” to collide and attack the cell wall of fibers. The morphologies and structure of fibers were controllably modified to have the rough surface and loose structure, while the cellulose purity and fiber yield were well maintained during the process. A 5 min and 500 W microwave treatment can improve the Fock reactivity of pulp fibers from 49 to 83% with a super-high fiber yield of 99.5%. The effective approach of microwave treatment presents a promising candidate for manufacturing high-performance cellulosic fibers.

Graphic abstract



中文翻译:

水分子“纺丝刀”可控地改善纤维素纤维的性能

摘要

溶解浆的高反应性是实现天然纤维素纤维在可持续社会中深入应用的基本参数。在这里,我们开发了一种简单而有效的微波处理策略,以提高纸浆纤维的反应能力。微波辐射会由于极化作用而引起水分子的旋转和振动,其中水分子起着“纺丝刀”的作用,碰撞并侵蚀纤维的细胞壁。可控制地改变纤维的形态和结构,使其具有粗糙的表面和松散的结构,同时在此过程中可以很好地保持纤维素的纯度和纤维的产率。5分钟和500 W的微波处理可以将纸浆纤维的Fock反应性从49%提高到83%,超高纤维产率为99.5%。

图形摘要

更新日期:2020-08-19
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