Biobased multiblock copolymers: Synthesis, properties and shape memory performance of poly(ethylene 2,5-furandicarboxylate)-b-poly(ethylene glycol)
Biobased multiblock copolymers: Synthesis, properties and shape memory performance of poly(ethylene 2,5-furandicarboxylate)-b-poly(ethylene glycol)
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DOI：
10.1016/j.polymdegradstab.2017.07.032
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发表时间：
2017-10
影响因子：
5.9
通讯作者：
Guoqiang Wang;Jiang Min;Qiang Zhang;Rui Wang;Guangyuan Zhou
中科院分区：
文献类型：
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作者：
Guoqiang Wang;Jiang Min;Qiang Zhang;Rui Wang;Guangyuan Zhou
以生物基乙二醇（EG）、2，5-呋喃二甲酸（FDCA）和聚乙二醇（PEG）为原料，通过两步熔融缩聚法合成了一系列聚2，5-呋喃二甲酸乙二醇酯-聚乙二醇（PEFEG）多嵌段共聚物。采用1H NMR、GPC、DSC、TGA等方法对PEPEG的组成、分子量及其分布、结晶行为、热稳定性进行了研究。研究了组成对PEFEGs结晶行为、热性能和力学性能的影响。此外，还对PEPEG的形状记忆性能进行了系统的研究。GPC和1H NMR结果表明产物为多嵌段共聚物，而不是PEG和PEF的共混物。所有PEPEG均表现出优异的热稳定性。随着PEG链长和含量的增加，PEG嵌段的熔融结晶峰和熔融峰变高，焓值也变高。与PEF相比，PEPEG的断裂伸长率更好。同时，PEPEG具有优异的形状记忆性能。
A series of multiblock copolymers poly(ethylene 2,5-furandicarboxylate)-poly(ethylene glycol) (PEFEGs) were synthesized from available biobased ethylene glycol (EG), 2,5-furandicarboxylic acid (FDCA), and poly(ethylene glycol) (PEG) through a two-step melt polycondensation method. The composition, molecular weight and its distribution, crystallization behavior, thermal stability of PEFEGs were investigated by1H NMR, GPC, DSC, and TGA, respectively. Effects of composition on crystallization behavior, thermal and mechanical properties of PEFEGs were investigated. Furthermore, shape memory properties of PEFEGs were also investigated systematically. GPC and1H NMR results show that the products were the multiblock copolymers, not the blend of PEG and PEF. All PEFEGs exhibited the excellent thermal stability. With the increase of PEG chain length and content, melt crystallization peak and melt peak of PEG block became higher and the enthalpy values also became higher. Compared with PEF, the elongation at break of PEFEGs are much better. Meanwhile, PEFEGs exhibit excellent shape memory properties.