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Preparation, characterization, and polymerization of novel maleimidobenzoxazine containing carboxylic moiety and its cocuring behaviors with epoxy resin
Author(s) -
Zhong Hailin,
Lu Yanbing,
Chen Junren,
Xu Weijian,
Liu Xi
Publication year - 2010
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.32503
Subject(s) - epoxy , curing (chemistry) , polymer chemistry , differential scanning calorimetry , formaldehyde , maleimide , thermogravimetric analysis , materials science , chemistry , moiety , nuclear chemistry , organic chemistry , physics , thermodynamics
A novel benzoxazine containing maleimide and carboxylic moieties, 1‐[3‐(4‐carboxylphenyl)‐3,4‐dihydro‐2H‐benzo[e][1,3]‐oxazin‐6‐yl]maleimide (Mal‐Bz‐Co), was synthesized and the structure was identified by 1 H‐NMR and FTIR. Mal‐Bz‐Co exhibited good solubility in common organic solvents. The cure behavior of Mal‐Bz‐Co and cocure behavior of Mal‐Bz‐Co with o ‐cresol formaldehyde epoxy resin were investigated by differential scanning calorimetry. Results indicated that Mal‐Bz‐Co showed a single curing exothermic peak at about 238.3°C. However, the maximum curing temperature ( T p ) decreased to 146.1°C when Mal‐Bz‐Co cocured with o ‐cresol formaldehyde epoxy resin in the molar ratio of 1 : 1. The T p was about 92°C lower than that of Mal‐Bz‐Co. Thermogravimetric analysis showed that high‐decomposition temperature and char yield were observed for the cured resins of Mal‐Bz‐Co and Mal‐Bz‐Co/ o ‐CFER. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010
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