Peng Guo, Yaoqin Wu, Congcong Dong, Changmei Sun, Rongjun Qu, Chunnuan Ji, Ying Zhang, Ying Wang
School of Chemistry and Materials Science, Ludong University, Yantai, China.
Front Chem. 2020 Nov 9;8:586763. doi: 10.3389/fchem.2020.586763. eCollection 2020.
Aramid nanofibers (ANFs) represent the most promising nanoscale building blocks for high-performance nanocomposites. But their applications are mostly limited to those polymers containing -OH or -NH groups that can interact with ANFs through hydrogen bonding or others. In this paper, allyl and benzyl modified ANFs were successfully fabricated using a metallization method followed by functionalization with allyl and benzyl bromide. A series of modified aramid nanomaterials (ANMs) with different degrees of modification were prepared and their morphologies studied. The modified ANFs were added to polystyrene (PS) films as reinforcements. The mechanical properties of the resulting composite PS films including Young's modulus, toughness and yield strength were dramatically improved compared to those of pure PS film. These new types of reinforcement additives for non-polar polymer materials are presented in this paper.
芳纶纳米纤维（ANFs）是用于高性能纳米复合材料最具前景的纳米级构建单元。但其应用大多局限于那些含有可通过氢键或其他方式与ANFs相互作用的-OH或-NH基团的聚合物。本文采用金属化方法，随后用烯丙基溴和苄基溴进行功能化，成功制备了烯丙基和苄基改性的ANFs。制备了一系列不同改性程度的改性芳纶纳米材料（ANMs）并研究了它们的形态。将改性ANFs作为增强剂添加到聚苯乙烯（PS）薄膜中。与纯PS薄膜相比，所得复合PS薄膜的力学性能，包括杨氏模量、韧性和屈服强度都得到了显著提高。本文介绍了这些用于非极性聚合物材料的新型增强添加剂。
