Effect of phase separation on water resistance of green waterborne polyurethanes: Unexpected stronger impact compared to hydrophilic segments

被引：21

作者：

Xiao, Yao ^{[1
]}

Bao, Lixia ^{[1
]}

Fu, Xiaowei ^{[1
]}

Wu, Bo ^{[1
]}

Kong, Weibo ^{[1
]}

Zhou, Changlin ^{[1
]}

Lei, Jingxin ^{[1
]}

机构：

[1] Sichuan Univ, Polymer Res Inst, State Key Lab Polymer Mat Engn, Chengdu, Sichuan, Peoples R China

来源：

ADVANCES IN POLYMER TECHNOLOGY | 2018年 / 37卷 / 06期

基金：

中国国家自然科学基金;

关键词：

green waterborne polyurethanes; hydrophilic segments; phase separation; water resistance; waterborne polyurethanes; X-RAY; MECHANICAL-PROPERTIES; POTENTIAL APPLICATION; DISPERSIONS; ELASTOMERS; BLOCK; SEGREGATION; COPOLYMERS; COMPOSITE; BEHAVIOR;

D O I：

10.1002/adv.21818

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Effect of phase separation on the water resistance of green waterborne polyurethanes was discussed for the first time. Phase separation was studied through the application of dynamic mechanical analysis. Water resistance was characterized by water absorption ratio and water contact angle. The results showed that the phase separation had stronger effect on water resistance compared with the content of hydrophilic segments of green waterborne polyurethanes; higher phase separation degree led to better water resistance even though the content of hydrophilic segments increased. And, fluorescence microscope images of fluorescent dye inside the green waterborne polyurethane films justified this viewpoint.

引用

页码：1618 / 1624

页数：7

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