期刊
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
卷 47, 期 4, 页码 1136-1147出版社
WILEY
DOI: 10.1002/pola.23201
关键词
frontal polymerization (FP); graft copolymers; morphology; nanocomposites; polyhedral oligomeric silsesquioxane (POSS); poly(N-methylolacrylamide) (PNMA); radical polymerization; synthesis
资金
- Natural Science Foundations (NSFs) of China [20576053, 20606016]
- NSF (NASA) of China [10676013]
- NSF
- Jiangsu Higher Education Institutions of China [07KJA53009]
We report on a new strategy for fabricating well-defined POSS-based polymeric materials with and without solvent by frontal polymerization (FP) at ambient pressure. First, we functionalize polyhedral oligomeric silsesquioxane (POSS) with isophorone diisocyanate (IPDI). With these functionalized POSS-containing isocyanate groups, POSS can be easily incorporated into a poly(N-methylolacrylamide) (PNMA) matrix via FP in situ. Constant velocity FP is observed without significant bulk polymerization. The morphology and thermal properties of POSS-based hybrid polymers prepared via FP are comparatively investigated on the basis of scanning electronic microscopy (SEM) and thermogravimetric analysis (TGA). Results show that the as-prepared POSS-based polymeric materials exhibit a higher glass transition temperature than that of pure PNMA, ascribing to modified POSS well-dispersed in these hybrid polymers. Also, the products with different microstructures display different thermal properties. The pure PNMA exhibits a featureless morphology, whereas a hierarchical morphology is obtained for the POSS-based polymeric materials. (C) 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 1136-1147, 2009
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