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首页> 外文期刊>Polymers for advanced technologies >Synthesis and characterization of tercopolymers derived from ε-caprolactone, trimethylene carbonate, and lactide
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Synthesis and characterization of tercopolymers derived from ε-caprolactone, trimethylene carbonate, and lactide

机译：ε-己内酯，碳酸三亚甲基酯和丙交酯衍生的三元共聚物的合成与表征

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摘要

A series of tri-components copolymers with different molar ratios were synthesized via bulk ring-opening copolymerization of trimethylene carbonate (TMC), L-lactide (LLA), and ε-caprolactone (ε-CL), using stannous octoate as catalyst. The sequence structure of the tercopolymer chain was characterized by 1{sup left}H and 13{sup left}C nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR), and gel permeation chromatography (GPC). The results showed that although block sequence of the corresponding monomers still existed in the tercopolymer chain, the random tercopolymers were ultimately obtained due to the transesterification during polymerization. For the samples TP1 and TP2, longer sequence of LLA existed in the molecular chains. The thermal properties of tercopolymers were investigated by differential scanning calorimetry (DSC) and the mechanical properties of the resulting copolymers were studied by using a tensile tester. The results indicated that the properties of these copolymers could be adjusted by changing the compositions of the copolymers. The resulting tercopolymers are expected to have potential uses as nerve regeneration and other biomedicine materials.
机译：以辛酸亚锡为催化剂，通过碳酸亚丙酯（TMC），L-丙交酯（LLA）和ε-己内酯（ε-CL）的本体开环共聚反应，合成了一系列摩尔比不同的三组分共聚物。三元共聚物链的序列结构通过1 H和13 C核磁共振（NMR），傅立叶变换红外光谱（FTIR）和凝胶渗透色谱法（GPC）来表征。结果表明，尽管三元共聚物链中仍存在相应单体的嵌段序列，但由于聚合过程中的酯基转移作用，最终获得了无规三元共聚物。对于样品TP1和TP2，分子链中存在更长的LLA序列。通过差示扫描量热法（DSC）研究三元共聚物的热性能，并使用拉伸测试仪研究所得共聚物的机械性能。结果表明，可以通过改变共聚物的组成来调节这些共聚物的性能。预期所得的三元共聚物具有潜在的用途，可作为神经再生和其他生物医学材料。

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