Heating-Responsive Shape-Memory Effect in Thermoplastic Polyurethanes with Low Melt-Flow Index

被引：35
|
作者：
Sun, Li [1 ]
Huang, Wei Min [2 ]
Lu, Haibao [3 ]
Lim, Kok Jiak [2 ]
Zhou, Ye [2 ]
Wang, Tao Xi [2 ]
Gao, Xiang Yang [4 ]
机构：
[1] Shenyang Jianzhu Univ, Sch Civil Engn, Shenyang 110168, Peoples R China
[2] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore
[3] Harbin Inst Technol, Sci & Technol Adv Composites Special Environm Lab, Harbin 150080, Peoples R China
[4] Northwestern Polytech Univ, Sch Aeronaut Engn, Xian 710072, Peoples R China
来源：
MACROMOLECULAR CHEMISTRY AND PHYSICS | 2014年 / 215卷 / 24期
基金：
中国国家自然科学基金;
关键词：
crosslinking; crystallization; polyurethanes; stimuli-sensitive polymers; thermoplastics; THERMOMECHANICAL PROPERTIES; HYBRID COMPOSITES; SMART SYSTEMS; POLYMERS; FUNDAMENTALS; TECHNOLOGY; MOISTURE;
D O I：
10.1002/macp.201400429
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The heating-responsive shape-memory effect (SME) based on melting in two thermoplastic polyurethanes (TPUs) with low melt-flow index is experimentally investigated. It is revealed that after severe deformation in either tension or impression at room temperature, upon heating to the melting temperature, significant shape recovery is achieved. The underlying mechanism for the heating-responsive shape recovery (based on melting) in such a type of polymers without crosslinking is proposed. This mechanism is generic and should be applicable to most thermoplastic polymers with a low melt-flow index.
引用
收藏
页码：2430 / 2436
页数：7
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