Cellulose Nanocrystals/Polyurethane with Self-Healing Properties

被引：0

作者：

Wang B. ^{[1
]}

Lin M. ^{[2
]}

Hou J. ^{[1
]}

Zhang S. ^{[1
]}

机构：

[1] Polymer Research Institute of Sichuan University, State Key Laboratory of Polymer Materials Engineering, Chengdu

[2] Guangdong Electric Power Sciene Academe, Guangzhou

来源：

Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2018年 / 34卷 / 08期

关键词：

Cellulose crystal; Polyurethane; Self-healing;

D O I：

10.16865/j.cnki.1000-7555.2018.08.028

中图分类号：

学科分类号：

摘要：

Polyurethane(PU) with enhanced mechanical strength and breaking elongation was prepared by adding cellulose crystals(CNC) to polyurethane, which was obtained by the established two-step method. CNC can be dispersed well in PU matrix. The tensile test shows that both the mechanical stress and breaking elongation can be improved over 140% comparing with pure polyurethane matrix due to the formation of hydrogen bonds between PU and CNC, with the addition of 1% CNC. Besides, the PU/CNC material exhibits good self-healing properties because the restoration of dynamic hydrogen bonds among the materials. The breaking stress and elongation of PU/CNC-1% can reach 5.4 MPa and 1113% respectively after self-healing at 50 ℃ for 36 h. © 2018, Editorial Board of Polymer Materials Science & Engineering. All right reserved.

引用

页码：167 / 172

页数：5

共 8 条

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