Synthesis and properties of responsive self-healing polyurethane containing dynamic disulfide bonds

doi:10.1177/09540083211022818

	Synthesis and properties of responsive self-healing polyurethane containing dynamic disulfide bonds
	Qu, Qiqi 1,2; Wang, Hua 1; He, Jing 1,2; Da, Yunsheng 1,2; Zhu, Menghan 1,2; Liu, Yanyan 1; Tian, Xingyou 1
刊名	HIGH PERFORMANCE POLYMERS
	2021-06-18
关键词	Self-healing responsive polyurethane polycaprolactone dynamic disulfide bonds
ISSN号	0954-0083
DOI	10.1177/09540083211022818
通讯作者	Wang, Hua(wanghua@issp.ac.cn)
英文摘要	The polymers with pH responsiveness and temperature sensitivity exhibit important applications in many fields. To endow the responsive polymers with self-healing is meaningful work, which contributes to increase their service life and reduce waste of resources significantly. In this research, a series of pH-responsive polyurethanes containing dynamic disulfide bonds and carboxylic acid functional groups were prepared by mixing polycaprolactone diol (PCL), hexamethylene diisocyanate (HDI), 2,2-dimethylolbutyric acid, and bis(2-hydroxyethyl) disulfide. The structure of the polymer was confirmed by some characterization methods such as infrared absorption spectroscopy, Raman scattering spectroscopy, X-ray diffraction, and differential scanning calorimetry. Many performances of the polymer such as the contact angle, thermal stability, mechanics, and self-healing properties can be adjusted by changing the functional units of polyurethanes. The dynamic disulfide bonds in the main chain were observed no harm to the pH response performance, instead which were beneficial to the promotion of heat resistance, tensile properties, and self-healing performance of polyurethane. The elongation at break and the tensile strength are increased by 85.3% and 54.9%, respectively. All the polyurethane exhibited considerable self-healing effects at 110 degrees C, with the highest healing efficiency reaching 93.7%, as a result of the dissociation of hydrogen bonds and the exchange reaction of disulfide bonds.
资助项目	National Key R&D Program of China[2017YFB0406200] ; Major science and technology projects of Anhui Province[18030901083] ; Youth Innovation Promotion Association, CAS[2014288]
WOS关键词	CHEMISTRY
WOS研究方向	Polymer Science
语种	英语
出版者	SAGE PUBLICATIONS LTD
WOS记录号	WOS:000669071300001
资助机构	National Key R&D Program of China ; Major science and technology projects of Anhui Province ; Youth Innovation Promotion Association, CAS
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/123445]
专题	中国科学院合肥物质科学研究院
通讯作者	Wang, Hua
作者单位	1.Chinese Acad Sci, HFIPS, Inst Solid State Phys, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China 2.Univ Sci & Technol China, Hefei, Peoples R China
推荐引用方式 GB/T 7714	Qu, Qiqi,Wang, Hua,He, Jing,et al. Synthesis and properties of responsive self-healing polyurethane containing dynamic disulfide bonds[J]. HIGH PERFORMANCE POLYMERS,2021.
APA	Qu, Qiqi.,Wang, Hua.,He, Jing.,Da, Yunsheng.,Zhu, Menghan.,...&Tian, Xingyou.(2021).Synthesis and properties of responsive self-healing polyurethane containing dynamic disulfide bonds.HIGH PERFORMANCE POLYMERS.
MLA	Qu, Qiqi,et al."Synthesis and properties of responsive self-healing polyurethane containing dynamic disulfide bonds".HIGH PERFORMANCE POLYMERS (2021).