文献类型：期刊文章

作　　者：刘鹏涛[1] 王锦艳[1] 刘程[1] 蹇锡高[1]

机构地区：[1]大连理工大学高分子材料系辽宁省高性能树脂工程技术研究中心,大连116012

出　　处：《高分子学报》

基　　金：国家"863"(项目号2003AA33G030);"973"(项目号2003CB615700)资助项目

年　　份：2007

卷　　号：17

期　　号：1

起止页码：85-89

语　　种：中文

收录情况：AJ、BDHX、BDHX2004、CAS、CSCD、CSCD2011_2012、IC、JST、PL、RCCSE、SCI(收录号：WOS:000243708800016)、SCI-EXPANDED(收录号：WOS:000243708800016)、SCIE、SCOPUS、WOS、ZGKJHX、核心刊

摘　　要：A series of aromatic copolyamides were prepared from（1,2-dihydro-2-（4-aminophenyl）-4-[4-（4-）（aminophenoxyl）phenyl）]phthalazin-1-one（DHPZ-DA）,p-phenylenediamine（PPD）,1,4-bis（4-aminophenoxy） benzene（BAPOB） and terephthaloyl dichloride by low temperature solution polycondensation.The polymers had relatively high inherent viscosities ranging from 1.74 dL/g to 4.31 dL/g.The polymers exhibit improved solubility in polar aprotic solvents with or without the addition of LiCl because of the introduction of twisted non-coplanar phthalazinone moieties and flexible ether linkages.The polymers had high thermal stability.Their glass transition temperature（Tg） values were in the range of 291～351℃,and the 5% and 10% weight loss temperatures in nitrogen were in the range of 486～504℃ and 509～528℃,respectively.WAXD measurements indicated that these copolyamides were amorphous.Most of the polymers exhibited lyotropic liquid crystalline characteristics in conc.H2SO4,NMP/（10 g/L LiCl） and DMAc/（10 g/L LiCl） solutions.The polyamides with excellent properties made it possible for the different processing and applications such as dry-wet spinning of fibers or the preparation of films,membranes and coatings.

关 键 词：溶致液晶 二氮杂萘酮 聚芳酰胺

分 类 号：O633.22]