Shape-memory properties of crosslinked biobased polyurethanes

被引：57

作者：

Calvo-Correas, Tamara ^{[1
]}

Gabilondo, Nagore ^{[1
]}

Alonso-Varona, Ana ^{[2
]}

Palomares, Teodoro ^{[2
]}

Angeles Corcuera, M. ^{[1
]}

Eceiza, Arantxa ^{[1
]}

机构：

[1] Univ Basque Country, Dept Chem & Environm Engn, Grp Mat Technol, Polytech Sch, Pza Europa 1, Donostia San Sebastian 20018, Spain

[2] Univ Basque Country UPV EHU, Fac Med & Odontol, Dept Cellular Biol & Histol, B Sarriena S-N, Leioa 48940, Bizkaia, Spain

来源：

EUROPEAN POLYMER JOURNAL | 2016年 / 78卷

关键词：

Crosslinked polyurethane; Biobased diisocyanate; Shape-memory; TEMPERATURE-MEMORY; THERMOPLASTIC POLYURETHANE; POLYMERS; COMPOSITES; MORPHOLOGY;

D O I：

10.1016/j.eurpolymj.2016.03.030

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Biobased crosslinked polyurethanes were synthesized and characterized as shape-memory polymers. Both the macrodiol and the diisocyanate were derived from renewable sources; the first one from castor oil, and the second one from L-lysine amino acid. The influence of component molar ratios, crosslink density and maximum elongation on the shape-memory properties was analyzed. The thermal analysis showed that polyurethanes were micro phase separated. Though the study of the shape-memory properties, it was seen that shape-memory was influenced by crosslink density. A higher crosslink density led to a greater shape recovery, since crosslinks are the responsible for memorizing the shape of the material. With the increase of maximum elongation, both shape fixity and recovery decreased due to higher amount of crosslink net points were broken. Moreover, the synthesized polyurethanes showed its potential to be used in biomedical applications, according to the preliminary in vitro cytotoxicity assays. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：253 / 263

页数：11

共 53 条

[1] Effect of Diisocyanate Structure on the Properties and Microstructure of Polyurethanes Based on Polyols Derived from Renewable Resources [J].