期刊
POLYMER ENGINEERING AND SCIENCE
卷 50, 期 5, 页码 1028-1035出版社
WILEY
DOI: 10.1002/pen.21616
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资金
- PN II-IDEA [654/2009]
A series of phosphorus-containing copolyesters was prepared by polycondensation of 2-(6-oxido-6H-dibenz < c,e >< 1,2 > oxaphosphorin-6-yl)-1,4-naphthalene diol, 1, or of an equimolecular amount of 1 and different bisphenols 2, such as 4,4'-isopropylidenediphenol, 4,4'-(hexafluoroisopropylidene)diphenol and 2,7-dihydroxynaphthalene, with an aromatic diacid chloride containing two preformed ester groups 3, namely, terephthaloyl-bis-(4-oxybenzoyl-chloride). The copolyesters exhibited good thermal stability having the temperature of 5% weight loss above 380 degrees C and char yield at 700 degrees C in the range of 20-31.2%. The glass transition temperature was in the range of 136-147 degrees C. The polymers exhibited thermotropic liquid crystalline behavior, as was observed with polarized optical microscopy, differential scanning calorimetry, and X-ray experiments. POLYM. ENG. SCI., 50:1028-1035, 2010. (C) 2010 Society of Plastics Engineers
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