標題: Investigation of the thermal properties of novel adamantane-modified polybenzoxazine
作者: Su, YC
Chen, WC
Chang, FC
應用化學系
Department of Applied Chemistry
關鍵字: crosslinking;blends;differential scanning calorimetry;(DSC)
公開日期: 5-十一月-2004
摘要: Two novel structures of adamantane-modified benzoxazines were synthesized from 4-(1-adamantyl)-phenol through the incorporation of adamantane as a pendant group into the polybenzoxazine backbone. Both H-1-NMR and Fourier transform infrared spectra were used to characterize these structures. The rigid structure of the adamantane tended to hinder the chain mobility (boat anchor effect) and substantially enhanced the thermal properties, including the glass-transition temperature and decomposition temperature, especially for poly(6-adamantyl-3-methyl-3,4-dihydro-2H-1,3-benzoxazine). In the poly(6-adamantyl-3-phenyl-3,4-dihydro-2H-1,3-benzoxazine) system, however, the opposite result for the glass-transition temperature was observed and it was interpreted as lower crosslinking density. The phenyl group was bulkier than the methyl group, and the movement of the molecular chain was hindered between bridging points during the curing process; this resulted in a lower crosslinking density and a lower glass-transition temperature than those of poly(6-adamantyl-3-methyl-3,4-dihydro-2H-1,3-benzoxazine). (C) 2004 Wiley Periodicals, Inc.
URI: http://dx.doi.org/10.1002/app.20974
http://hdl.handle.net/11536/25650
ISSN: 0021-8995
DOI: 10.1002/app.20974
期刊: JOURNAL OF APPLIED POLYMER SCIENCE
Volume: 94
Issue: 3
起始頁: 932
結束頁: 940
顯示於類別:期刊論文


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