聚酯-聚酯多嵌段共聚物的合成及其动态力学性能  

SYNTHESIS AND DYNAMIC MECHANICAL PROPERTIES OF POLYESTER-POLYESTER SEGMENTED COPOLYMERS

作　　者：英哲[1] 刘文忠[1] 韩孝族[1] 程娴[2] 安郁国 

机构地区：[1]中国科学院长春应用化学研究所,长春130022 [2]中国科学院金属研究所

出　　处：《应用化学》1992年第6期81-84,共4页Chinese Journal of Applied Chemistry

摘　　要：聚酯-聚醚多嵌段共聚物的动态力学性能谱上有两个T₈,不宜做阻尼材料。本文报道聚对苯二甲酸乙二醇酯（PET）-端羟基聚己二酸乙二醇酯（PEA）共聚物（简称嵌段共聚酯）,比聚醚-聚酯多嵌段共聚物有更好的相容性。我们研究了PEA的分子量,间苯二甲酸的用量对嵌段共聚酯的结晶度,以及结晶度对嵌段共聚酯的动态力学性能的影响。A series of polyester-polyester segmented copolymers were synthesized by condensation of hydroxy-terminated poly(ethylene adipate) and dimethyl phthalate or isophthalie aeid and ethylene glycol using manganese acetate, titanium dioxide and titanium-potassium oxalate as eatalysts. The copolymers were characterized by swolling test,molecular weight and NMR measurements. The relationship between dynamie mechanical properties, erystalinity and component of the segmented copolymers was investigated. The results show that the crystalinity of poly(ethylene phthalate)chains in segmented copolymer may be destroyed by the added isophthalic acid, which makes the segmented copolymer be a good damping material with tanδ_(max1.37).

关 键 词：PET PEA 嵌段共聚物 动态 力学性质 

分 类 号：O633.14[理学—高分子化学]