标题: | Synthesis and characterizations of a vinyl-terminated benzoxazine monomer and its blending with polyhedral oligomeric silsesquioxane (POSS) |
作者: | Lee, YJ Huang, JM Kuo, SW Chen, JK Chang, FC 应用化学系 Department of Applied Chemistry |
关键字: | polybenzoxazine;POSS;nanocomposite |
公开日期: | 10-三月-2005 |
摘要: | Benzoxazine was synthesized through the Mannich condensation of phenol, formaldehyde, and primary amines through ring-opening polymerization. Polybenzoxazines are phenolic-like materials that possess dimensional and thermal stability, and they release no toxic byproducts during their polymerization. To further improve the thermal stability of polybenzoxazines, a hydrosilane-functionalized polyhedral oligomeric silsesquioxane (H-POSS) was incorporated into the vinyl-terminated benzoxazine monomer (VB-a) which we then subjected to ring-opening polymerization. In addition, we also prepared hybrids from a non-reactive POSS (IB-POSS) and VB-a. The glass transition temperature (T-g) of a regular polymerized VB-a (i.e. PVB-a) is 307 degrees C, while the hybrid containing 5 wt% of H-POSS is 333 degrees C. The IB-POSS modified PVB-a hybrids, in general, results in lower T-g than the pure PVB-a due to poor missibility. (c) 2005 Elsevier Ltd. All rights reserved. |
URI: | http://dx.doi.org/10.1016/j.polymer.2005.01.025 http://hdl.handle.net/11536/13907 |
ISSN: | 0032-3861 |
DOI: | 10.1016/j.polymer.2005.01.025 |
期刊: | POLYMER |
Volume: | 46 |
Issue: | 7 |
起始页: | 2320 |
结束页: | 2330 |
显示于类别: | Articles |
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