Poly(ethylene succinate)-b-poly(butylene succinate) Multiblock Copolyesters: The Effects of Block Length and Composition on Physical Properties
Poly(ethylene succinate)-b-poly(butylene succinate) Multiblock Copolyesters: The Effects of Block Length and Composition on Physical Properties
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聚（丁二酸乙二酯）-b-聚（丁二酸丁二酯）多嵌段共聚酯：嵌段长度和组成对物理性能的影响
DOI：
10.1021/ie4018379
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发表时间：
2013-09
影响因子：
4.2
通讯作者：
Wang Yu-Zhong
中科院分区：
文献类型：
--
作者：
Xu Chang-Lian;Zeng Jian-Bing;Zhu Qun-Ying;Wang Yu-Zhong
合成了不同嵌段长度和组成的聚丁二酸乙二酯-b-聚丁二酸丁二酯(PES-b-PBS)多嵌段共聚物，并分别通过1H NMR和GPC表征了共聚物的化学结构、分子量和多分散指数。通过 DSC 研究了共聚物中 PES 和 PBS 嵌段的混溶性和结晶情况。结果表明，PES 和 PBS 嵌段在较短嵌段长度的共聚物中可混溶，而在具有较长嵌段长度的共聚物中则部分混溶。由于稀释剂的作用，随着PES含量的增加，PBS块的结晶性受到抑制，当PES块的含量小于PBS块时，其结晶受到很大限制，而当PES块的含量大于PBS块时，由于先前结晶的PBS的成核作用，其结晶得到改善。拉伸测试结果表明所有共聚物均表现出优异的机械性能。
Poly(ethylene succinate)-b-poly(butylene succinate) (PES-b-PBS) multiblock copolymers with different block lengths and compositions were synthesized, and their chemical structure, molecular weights, and polydispersity index of the copolymers were characterized by 1H NMR and GPC, respectively. The miscibility and crystallization of PES and PBS blocks in the copolymers were investigated by DSC. The results suggested that PES and PBS blocks are miscible in copolymers with shorter block lengths, while they are partially miscible in those with longer block lengths. The crystallization of PBS blocks were depressed with an increase in PES content due to the diluent effect, and that of PES blocks was largely restricted when its content was less than the PBS block, while that was improved when its content was more than that of the PBS block due to the nucleation effect of previously crystallized PBS. The results of tensile test suggest that all the copolymers showed excellent mechanical property.
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影响因子：
5.9
作者：
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通讯作者：
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