Synthesis of bio-based copolyester and its reinforcement with zinc diacrylate for shape memory application
Synthesis of bio-based copolyester and its reinforcement with zinc diacrylate for shape memory application
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DOI：
10.1016/j.polymer.2014.06.044
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发表时间：
2014-08-05
期刊：
影响因子：
4.6
通讯作者：
Jia, Demin
中科院分区：
文献类型：
--
作者：
Guo, Wenshan;Shen, Zuoli;Jia, Demin
以1，3-丙二醇、癸二酸和衣康酸为原料合成了全生物基聚癸二酸亚丙酯。另一种生物基二酸，琥珀酸，被引入到定制的灵活性的弹性。相应地，我们得到了一系列可交联共聚酯，涵盖了从硬质塑料到软质弹性体。刚性共聚酯可用作形状记忆聚合物。由于弹性体共聚酯（非结晶性共聚酯和T-m以上的结晶性共聚酯）的力学性能较弱，采用二丙烯酸锌（ZDA）作为增强体，以提高弹性体共聚酯的拉伸强度和橡胶态储能模量。ZDA对共聚酯具有很高的增强效果。例如，ZDA（40 phr）增强的聚（癸二酸亚丙酯）（PPSSO）的拉伸强度和储能模量高于Tm分别增加了368%和745%。ZDA与共聚酯具有良好的相容性，聚合后的ZDA粒子在基体中分散均匀。此外，PPSS 0/ZDA复合材料具有较高的形状固定性和形状恢复性，使其适合于制备生物基SMP。(C)2014爱思唯尔有限公司版权所有。
We synthesized fully bio-based poly(propylene sebacate) using 1,3-propanediol, sebacic acid, and itaconic acid as raw materials. Another bio-based diacid, succinic acid, was introduced to tailor the flexibility of the copolyester. Accordingly, we obtained a series of crosslinkable copolyesters, covering from rigid plastics to soft elastomers. The rigid copolyesters could be used as shape memory polymers (SMPs). As the elastomeric copolyesters (noncrystalline ones and crystalline ones above T-m) are mechanically weak, zinc diacrylate (ZDA) was used as reinforcement to enhance the tensile strength and storage modulus in rubbery state. ZDA exhibited high reinforcing efficiency for the copolyesters. For instance, tensile strength and storage modulus above Tm of poly(propylene sebacate) (PPSSO) reinforced by ZDA (40 phr) increased by 368% and 745%, respectively. ZDA showed good compatibility with the copolyesters and polymerized ZDA particles dispersed uniformly in the matrices. Additionally, PPSS0/ZDA composites exhibited high shape fixity and shape recovery, making them suitable for fabricating biobased SMPs. (C) 2014 Elsevier Ltd. All rights reserved.