標題: Preparation and characterization of poly seudorotaxanes based on adamantane-modified polybenzoxazines and beta-cyclodextrin
作者: Su, YC
Chen, WC
Chang, FC
應用化學系
Department of Applied Chemistry
關鍵字: cyclodextrin;benzoxazine;polypseudorotaxane
公開日期: 14-Feb-2005
摘要: P-Cyclodextrin (P-CD) forms inclusion complexes (ICs) with adamantane-modified benzoxazines (2 benzoxazine and 3 benzoxazine). These benzoxazines can readily penetrate into the CD's hydrophobic cavity, causing turbidity of their solutions, from which fine crystalline powders are obtained. We characterized these complexes by powder X-ray diffraction, C-13 and C-13 CP/MAS NMR spectroscopies, DSC, and TGA. The X-ray diffraction and solid-state C-13 CP/MAS NMR spectroscopy indicate that the IC domains of the polypseudorotaxanes maintain their channel-type structures after the ring-opening curing reactions have occurred. Furthermore, DSC measurements indicate that complexing the adamantane-modified benzoxazine units with beta-CDs result in stiffer main chains and, thus, higher glass transition temperature. TGA also indicates that the inclusion complexes have enhanced its thermal stability. (C) 2004 Published by Elsevier Ltd.
URI: http://dx.doi.org/10.1016/j.polymer.2004.09.059
http://hdl.handle.net/11536/14005
ISSN: 0032-3861
DOI: 10.1016/j.polymer.2004.09.059
期刊: POLYMER
Volume: 46
Issue: 5
起始頁: 1617
結束頁: 1623
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