Fabrication and Properties of a Bio-Based Biodegradable Thermoplastic Polyurethane Elastomer

Fabrication and Properties of a Bio-Based Biodegradable Thermoplastic Polyurethane Elastomer
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生物基可生物降解热塑性聚氨酯弹性体的制备和性能

DOI:
10.3390/polym11071121
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发表时间:
2019-07
期刊:
影响因子:
5
通讯作者:
Wang Qingguo
Wang Qingguo
中科院分区:
工程技术3区
文献类型:
--
作者:
Wang Zhaoshan;Yan Jieqiong;Wang Tongyao;Zai Yingying;Qiu Liyan;Wang Qingguo

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利用5种生物基脂肪族单体(丁二酸、癸二酸、富马酸、1,3-丙二醇和1,4-丁二醇)的熔融缩聚反应,首次合成了平均分子量为3825的柔韧性更好、可生物降解的聚酯二元醇(BPD)。然后,用过量的4,4 ′-二苯甲烷二异氰酸酯(MDI)聚合BPD。最后,以1,4-丁二醇(BDO)为扩链剂,制备了由BPD软段和MDI与BDO聚合而成的硬段组成的可生物降解热塑性聚氨酯弹性体(BTPU)。原子力显微镜(AFM)图像显示了两相结构的BTPU。BPD含量为60%时,BTPU的拉伸强度约为30 MPa,断裂伸长率大于800%。BTPU在脂肪酶溶液中具有良好的上级生物降解性,含80% BPD的BTPU在14 d内的生物降解失重率达到36.7%。
Using the melt polycondensation of five bio-based aliphatic monomers (succinic acid, sebacic acid, fumaric acid, 1,3-propanediol, and 1,4-butanediol), we first synthesized the more flexible and biodegradable polyester diols (BPD) with an average molecular weight of 3825. Then, the BPD was polymerized with excessive 4,4′-diphenylmethane diisocyanate (MDI). Finally, the molecular chain extender of 1,4-butanediol (BDO) was used to fabricate the biodegradable thermoplastic polyurethane elastomer (BTPU), comprising the soft segment of BPD and the hard segment polymerized by MDI and BDO. Atomic force microscope (AFM) images showed the two-phase structure of the BTPU. The tensile strength of the BTPU containing 60% BPD was about 30 MPa and elongation at break of the BTPU was over 800%. Notably, the BTPU had superior biodegradability in lipase solution and the biodegradation weight loss ratio of the BTPU containing 80% BPD reached 36.7% within 14 days in the lipase solution.
具有可控生物降解性的生物基弹性体纳米颗粒
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