標題: Syntheses, thermal properties, and phase morphologies of novel benzoxazines functionalized with polyhedral oligomeric silsesquioxane (POSS) nanocomposites
作者: Lee, YJ
Kuo, SW
Su, YC
Chen, JK
Tu, CW
Chang, FC
應用化學系
Department of Applied Chemistry
關鍵字: polybenzoxazines;polyhedral oligomeric silsesquioxane;nanocomposites
公開日期: 19-Aug-2004
摘要: We have successfully synthesized a novel benzoxazine ring-containing polyhedral oligomeric silsesquioxane (BZ-POSS) monomer by two routes: (1) hydrosilylation of a vinyl-terminated benzoxazine using the hydro-silane functional group of a polyhedral oligomeric silsesquioxane (H-POSS) and (2) reaction of a primary amine-containng POSS (Amine-POSS) with phenol and formaldehyde. The benzoxazine-containing POSS (BZ-POSS) monomer can be copolymerized with other benzoxazine monomers through ring-opening polymerization under conditions similar to that used for polymerizing pure benzoxazines. Thermal properties of these POSS-containing organic/inorganic polybenzoxazine nanocomposites have been improved over the pure polybenzoxazine analyzed by differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA). The BZ-POSS monomer is poorly miscible with the benzoxazine monomer and tends to aggregate and forms its own domains, both before and after polymerization. At a higher BZ-POSS content, gross aggregation occurs and results in a lower than expected improvement in the thermal properties. (C) 2004 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.polymer.2004.04.055
http://hdl.handle.net/11536/26464
ISSN: 0032-3861
DOI: 10.1016/j.polymer.2004.04.055
期刊: POLYMER
Volume: 45
Issue: 18
起始頁: 6321
結束頁: 6331
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