标题：Interfacial microstructure and mechanical properties of carbon fiber composites by fiber surface modification with poly(amidoamine)/polyhedral oligomeric silsesquioxane
作者：Gao, Bo; Zhang, Ruliang; He, Maoshuai; Wang, Chengguo; Liu, Lei; Zhao, Lifen; Wen, Zhijie; Ding, Zhipeng
作者机构：[Gao, Bo; Zhang, Ruliang; He, Maoshuai; Liu, Lei; Zhao, Lifen; Ding, Zhipeng] Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266590, Peoples 更多
通讯作者地址：[Zhang, RL]Shandong Univ Sci & Technol, Sch Mat Sci & Engn, Qingdao 266590, Peoples R China;[Wen, ZJ]Shandong Univ Sci & Technol, State Key Lab Min Di 更多
来源：COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
关键词：Carbon fiber; Interface/interphase; Mechanical properties; Surface; treatments
摘要：Polyhedral oligomeric silsesquioxane (POSS) was grafted onto carbon fiber surface using poly(amidoamine) (PAMAM) as a novel coupling agent at mild reaction conditions. Firstly, the reinforcement was designed with propagation of PAMAM on the fiber surface by in situ polymerization to improve the surface activities of carbon fiber. Secondly, the POSS further grafted on the fiber could significantly enhance fiber surface energy and wettability, which would greatly increase the interfacial strength of fiber-matrix. The microstructure and mechanical properties of carbon fiber and the resulting composites were investigated. The results indicated that PAMAM and POSS, which could significantly increase the surface roughness and wettability of carbon fiber, were successfully grafted on the fiber surface. Compared with the desized fiber composites, the interlaminar shear strength and the interfacial shear strength of the modified carbon fiber composites increased by 48% and 89%, respectively. (C) 2016 Elsevier Ltd. All rights reserved.