Unsaturated polyester-imide)s from hydroxy-terminated polybutadiene, dianhydride and diisocyanate

被引:19
作者
Banu, P [1 ]
Radhakrishnan, G [1 ]
机构
[1] Cent Leather Res Inst, Adv Ctr Polymers, Madras 600020, Tamil Nadu, India
关键词
unsaturated poly(ester-imide)s; hydroxy-terminated polybutadiene; dianhydride; diisocyanate;
D O I
10.1016/j.eurpolymj.2004.04.007
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Hydroxy terminated polybutadiene has been used for the first time in the synthesis of polyester-imide)s [P(E-I)s]. Anhydride terminated polyester prepolymers were prepared by the reaction of two different polyols-polytetramethyleneoxide glycol (PTMG) of molecular weight 1000 and hydroxy terminated polybutadiene (HTPB) of molecular weight 2500-and different dianhydrides-pyromellitic dianhydride (PMDA), benzophenonetetracarboxylic dianhydride (BTDA) and 4,4'-(hexafluoroiso-propylidene)diphthalic anhydride (HFDA). The prepolymers were then reacted with different diisocyanates-80:20 mixture of 2,4- and 2,6-tolylene diisocyanate (TDI), 1,6-hexamethylene diisocyanate (HDI), isophorone diisocyanate (IPDI) and 4,4'-methylene bis(phenylisocyanate) (MDI) resulting in P(E-I)s. The P(EI)s were characterised by FT-IR, FT-NMR, GPC, TGA, DSC and for static and dynamic mechanical properties. The polymers based on PTMG showed two distinct melting points and behave as thermoplastic elastomers. The thermal stability and mechanical properties of P(E-I)s based on HTPB were substantially higher than those based on PTMG. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1887 / 1894
页数:8
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