High performance bio-based polyurethane elastomers: Effect of different soft and hard segments

被引：30
|
作者：
Cui, Bin [1 ,3 ]
Wu, Qing-Yun [2 ]
Gu, Lin [1 ]
Shen, Liang [3 ]
Yu, Hai-bin [1 ]
机构：
[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Marine Mat & Protect Technol Zhejiang Pro, Key Lab Marine Mat & Related Technol, Ningbo 315201, Zhejiang, Peoples R China
[2] Ningbo Univ, Fac Mat Sci & Chem Engn, Dept Polymer Sci & Engn, Ningbo 315211, Zhejiang, Peoples R China
[3] Jiangxi Sci & Technol Normal Univ, Dept Polymer & Coating, Nanchang 330013, Peoples R China
来源：
CHINESE JOURNAL OF POLYMER SCIENCE | 2016年 / 34卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Polylactide diols; Bio-based polyurethane; Shape memory; Biocompatibility; MEDICAL DEVICES; MEMORY; POLYLACTIDE; BEHAVIOR;
D O I：
10.1007/s10118-016-1811-7
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
In this work, a series of high performance bio-based polyurethanes (bio-PUs) were synthesized from polylactide (PLA)-based diols, different diisocyanates (TDI, MDI, HDI, IPDI) and chain extender 1,4-butanediol, in which different soft and hard segments are used to adjust their transition temperatures and mechanical properties. Poly(lactide-co-caprolactone) copolymer diols (co-PLAols) instead of PLA diols as the soft segment improved the thermal stability and mechanical properties of the synthesized bio-PUs. Among them, MDI-based bio-PUs have the highest T (g) (43.8 A degrees C), tensile strength (23.5 MPa) and modulus (380.8 MPa), while HDI-based bio-PUs have the lowest T (g) (21.4 A degrees C) and highest elongation at break (580%). Especially, the bio-PUs synthesized from co-PLAols and MDI demonstrate better mechanical properties, closed to petroleum-based commodities. Furthermore, the obtained bio-PUs display good shape memory properties at body temperature and cytocompatibility. Therefore, these bio-PUs are promising for applications in biomedical fields.
引用
收藏
页码：901 / 909
页数：9
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