A novel high mechanical strength shape memory polymer based on ethyl cellulose and polycaprolactone

被引：53

作者：

Bai, Yongkang ^{[1
,2
]}

Jiang, Cheng ^{[1
,2
]}

Wang, Qihua ^{[1
]}

Wang, Tingmei ^{[1
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2013年 / 96卷 / 02期

基金：

美国国家科学基金会;

关键词：

Ethyl cellulose; Polycaprolactone; Shape memory polymer; Mechanical property; Biomedical suture; CARBON NANOTUBE COMPOSITES; COPOLYMERS; NETWORKS; NANOPARTICLES; ACTIVATION; SURFACE; LIGHT; WATER; SOFT;

D O I：

10.1016/j.carbpol.2013.04.026

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A novel biological friendly shape memory polymer (SMP) based on ethyl cellulose (EC) and polycaprolactone (PCL) was prepared. The network structure of the polymer was formed by linear EC backbones which were linked by grafted PCL chains, and the results showed outstanding mechanical strength and shape memory property of this polymer. The tensile modulus varied from 104.9 to 373.4 MPa while the tensile strength ranged from 155.4 to 323.6 MPa. And the elongations at break were all above 621%. The shape memory switching temperature could be modulated to 37.2 degrees C by decreasing the chain length of graft PCL. As EC and PCL are both biodegradable and biocompatible materials, this new polymer has potential application in biomedical field, like biomedical suture, which would be further studied in the future. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：522 / 527

页数：6

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