Water molecule "spinning cutter" controllably improving the performance of cellulosic fibers
Water molecule "spinning cutter" controllably improving the performance of cellulosic fibers
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水分子“旋转刀具”可控改善纤维素纤维性能
DOI：
10.1007/s10570-020-03301-8
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发表时间：
2020
期刊：
影响因子：
5.7
通讯作者：
Chen Lihui
中科院分区：
文献类型：
--
作者：
Li Jianguo;Tao Tao;Luo Chong;Liu Xi;Zhu Xuhai;Huang Liulian;Ouyang Xinhua;Ni Yonghao;Chen Lihui
高活性的溶解浆是实现天然纤维素纤维在可持续发展社会中深度应用的基本参数。本文提出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。微波辐射可引起水分子的旋转和振动，由于极化效应，水分子充当“旋转切割器”，碰撞和攻击纤维的细胞壁。在保持纤维素纯度和纤维得率的前提下，可控地改变纤维的形貌和结构，使纤维表面粗糙、结构疏松。500 W微波处理5 min，可使纸浆纤维的Fock反应性从49%提高到83%，纤维得率高达99.5%。微波处理是一种有效的方法，它为高性能纤维素纤维的制备提供了一种很有前途的方法。
AbstractHigh 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