作 者：
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机构地区：
北京化工大学材料科学与工程学院
出 处：
《石油化工》
2009年第4期394-399,共6页
摘 要：
以1,3-丙二醇为二元醇、对苯二甲酸二甲酯和己二酸为二元酸,制备了不同投料比(n(对苯二甲酸二甲酯)∶n(己二酸))的可生物降解的聚(对苯二甲酸丙二醇-co-己二酸丙二醇)(PPTA)共聚酯;并用凝胶渗透色谱、核磁共振、广角X射线衍射、示差扫描量热和堆肥实验对PPTA共聚酯进行了表征。表征结果显示,PPTA共聚酯的组成与投料比相接近,PPTA共聚酯的组成与共聚酯中脂肪族(己二酸丙二醇)和芳香族(对苯二甲酸丙二醇)单元的链段分布、结晶结构、热性能及生物降解性能密切相关。可通过控制投料比制备具有不同性能的PPTA共聚酯。实验结果表明,当30%
A series of biodegradable aliphatic-aromatic poly （propylene terephthalate-co-propylene adipate） （PPTA）copolyesters were synthesized from 1, 3-propanediol （1, 3-PDO ）, dimethyl terephthalate （DMT） and adipic acid （ADP） with different mole ratios of DMT to ADP. The obtained PPTAs were characterized by means of GPC, 1H NMR, WXRD, DSC and compost test. Compositions of PPTA copolyesters closely accorded with mole ratios of DMT to ADP. The sequence distributions of aliphatic segment（propylene adipate） and aromatic segment（propylene terephthalate） in main chains, crystalline structure, thermal properties and biodegradability of PPTA copolyesters closely related to the compositions. Therefore PPTA copolyesters with different properties can be tailored by controlling mole ratio of DMT to ADP. In addition, when mole fraction of ADP was in the range of 30% - 80%, PPTA copolyesters with high biodegradability could be obtained. The biodegradability could be enhanced greatly by increasing ADP content within the range.
关 键 词：
聚
对苯二甲酸丙二醇
己二酸丙二醇
共聚酯
丙二醇
对苯二甲酸二甲酯
己二酸
结晶结构
生物降解
领 域：
[化学工程]
