《复合材料学报》优先在线发表论文。
摘 要：通过DMSO/KOH 体系溶解宏观芳纶纤维(AF)成功制备了直径为40~50nm，长度为2~5μm的芳纶纳米纤维(ANF)，并利用SEM、TEM、FTIR、Raman、XRD对ANF和AF的微观形貌、化学结构、结晶结构进行了分析，结果表明ANF和AF具有相似的化学结构，同时ANF保留了AF大部分的结晶结构，只是纤维尺寸产生一定的差异。最后通过真空辅助层层自组装法制备了具有层状致密结构的复合薄膜，该薄膜展现出很好的透明、柔性、耐温性和力学性能，此外还具有一定的亲液性能(接触角为81.5°)以及优异的抗液体渗透和抗液体吸收性能。
关键词：芳纶纤维；纳米纤维；复合薄膜；层状复合材料；真空辅助层层自组装
Abstract: Aramid nanofibers (ANF) with a diameter of 40~50nm and a length of 2~5μm were successfully prepared by dissolving macroscopic aramid fiber (AF) in DMSO/KOH system, and the microstructure, chemical and crystal structure of ANF and AF were analyzed by SEM, TEM, FTIR, Raman and XRD. The results show that ANF and AF have similar chemical structures, while ANF retains most of the crystalline structure of AF, but only a certain difference in fiber size. Finally, a composite film with layered dense structure was prepared by vacuum-assisted layer-by-layer assembled method. The film exhibits good transparency, flexibility, temperature resistance and mechanical properties. In addition, it also has certain lyophilic properties (contact angle is 81.5°) and excellent resistance to liquid penetration and liquid absorption.
Keywords: aramid fibers; nanofiber; composite films; laminated materials; vacuum-assisted layer-by-layer assembly
作者：司联蒙等，陕西科技大学 轻工科学与工程学院，西安
通讯作者：陆赵情，陕西科技大学 轻工科学与工程学院，西安
全文详见中国知网学术期刊优先数字出版。
来源：CSCM_OFFICE 中国复合材料学会
原文链接：https://mp.weixin.qq.com/s?__biz=MjM5MTA2NTk1Nw==&mid=2654408432&idx=4&sn=4e0ca4816614e2a9a14692500f6b5088&scene=0#wechat_redirect
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