期刊
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
卷 52, 期 21, 页码 3060-3068出版社
WILEY
DOI: 10.1002/pola.27353
关键词
copolymerization; crosslinking; photopolymerization; polysulfides; radical polymerization; structure; property relations
资金
- Canada Research Chair (CRC) Award
- Industrial Strategic Technology Development Program [10035163]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10035163] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Photo-induced thiol-ene crosslinked polymeric networks have been extensively explored in constructing a variety of new materials with enhanced mechanical properties for optical, biomedical, and sensing applications. Toward the broad applications, however, tunable mechanical properties are greatly desired. Here, an effective approach utilizing high-molecular-weight methacrylate copolymers having pendant thiol and vinyl groups (MCPsh and MCPenes) to modulate thermal and mechanical properties of photo-induced thiol-ene crosslinked materials is reported. The MCP copolymers are synthesized by an industrially friendly polymerization method, followed by post-modification including either a facile coupling reaction or reductive cleavage. Upon UV irradiation, thiol-ene reactive blends of MCPsh and MCPenes yield highly cross-linked materials through the formation of flexible sulfide linkages. These polysulfide-crosslinked materials based on rigid MCP backbones exhibit enhanced mechanical properties. Further, their thermal and mechanical properties are tuned by modulating monomer compositions of MCPs as well as varying numbers of pendant SH or vinyl groups (i.e., extent of crosslinking densities). This approach is versatile and effective for development of high performance polymeric materials. (c) 2014 Wiley Periodicals, Inc.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据