Surface chain cleavage behavior of PBIA fiber induced by direct fluorination

被引：23

作者：

Cheng, Zheng ^{[1
]}

Wu, Peng ^{[1
]}

Li, Baoyin ^{[1
]}

Chen, Teng ^{[1
]}

Liu, Yang ^{[1
]}

Ren, Mengmeng ^{[1
]}

Wang, Zaoming ^{[1
]}

Lai, Wenchuan ^{[1
]}

Wang, Xu ^{[1
]}

Liu, Xiangyang ^{[1
]}

机构：

[1] Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat & Engn, Chengdu 610065, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2016年 / 384卷

基金：

中国国家自然科学基金;

关键词：

Chain cleavage; Adhesion; Direct fluorination; Aramid fiber; ARAMID-FIBER; PLASMA TREATMENTS; CARBON-DIOXIDE; COMPOSITES; ENHANCEMENT; POLYIMIDE; STRENGTH; KINETICS; OXYGEN; FILMS;

D O I：

10.1016/j.apsusc.2016.05.055

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The surface chain cleavage behavior of PBIA fiber induced by direct fluorination was reported based on the analysis of physical and chemical changes on the fiber surface. The chain cleavage product was obtained to evaluate the chemical reaction during the fluorination process, and its impact on composites performance was also involved. DSC, FTIR spectra, UV-vis absorption spectra and H1NMR were utilized to analyze the chemical structure and composition of the chain cleavage product. The results show gaseous fluorine is most likely to attack the benzimidazole and amide bond in PBIA unit, which was also demonstrated by molecular simulation. Owing to the polar groups contained in chain cleavage products, the wettability of epoxy resin to fiber has been improved, leading to an 11.5% increase of adhesive strength of fiber-epoxy composite. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：480 / 486

页数：7

共 32 条

[1]

[Anonymous], 1992, UV-VIS Spectroscopy and Its Applications

[2] Micromechanics analysis of Kevlar-29 aramid fiber and epoxy resin microdroplet composite by Micro-Raman spectroscopy [J].