Preparation of Yellowing-Resistant Waterborne Polyurethane Modified with Disulfide Bonds

doi:10.3390/molecules29092099

	Preparation of Yellowing-Resistant Waterborne Polyurethane Modified with Disulfide Bonds
	Li, Guorong 1,2; Duan, Baorong 2; Leng, Guorui 3; Liu, Junjie 4; Zhang, Tong 2; Lu, Zhenwei 2; Wang, Shanshan 1; Qu, Jiale 1,5
发表期刊	MOLECULES
	2024-05-01
卷号	29 期号:9 页码:21
关键词	disulfide waterborne polyurethane yellowing resistance UV absorber UV-320 dynamic reversibility
DOI	10.3390/molecules29092099
通讯作者	Wang, Shanshan([email protected]) ; Qu, Jiale([email protected])
英文摘要	Waterborne polyurethane, renowned for its lightweight properties, excellent insulation capabilities, and corrosion resistance, has found extensive application in fields such as construction, automotive, leather, and thermal insulation. Nevertheless, during operational usage, waterborne polyurethane materials, akin to other polymeric substances, are susceptible to oxidative aging manifestations like yellowing, cracking, and diminished mechanical performance, significantly curtailing their utility. Consequently, the synthesis of yellowing-resistant polyurethane assumes pivotal significance. This study integrates dynamic reversible reactions into the synthesis process of polyurethane by introducing the dynamic reversible compound 2-hydroxyethyl disulfide as a chain extender, alongside the incorporation of a UV absorber to enhance the polyurethane's resistance to yellowing. When the disulfide bonds absorb heat, they undergo cleavage, yielding thiols that spontaneously recombine into disulfide bonds at ambient temperatures, allowing for the continuous breaking and reformation of disulfide bonds to absorb heat. Concurrently, in collaboration with the UV absorber, the detrimental effects of ultraviolet radiation on the polyurethane material are mitigated, thereby augmenting its resistance to yellowing. This study scrutinizes the positioning of UV absorber addition, the quantity of UV absorber, and the molar ratio of 1,4-butanediol to 2-hydroxyethyl disulfide, characterizing the functional groups of polyurethane through infrared and Raman spectroscopy. It is observed that the successful preparation of yellowing-resistant polyurethane is achieved, and evaluations on the modified polyurethane through color difference, tensile, and centrifugal tests reveal that the optimal yellowing resistance is attained by adding a UV absorber at a mass fraction of 1% to 3% prior to chain extension, resulting in a color change grade of 2, denoting slight discoloration. Simultaneously, the other properties of polyurethane exhibit relative stability. Notably, when the molar ratio of 1,4-butanediol to 2-hydroxyethyl disulfide is 3:2, the overall performance of the polyurethane remains stable, with exceptional yellowing resistance capabilities attaining a color change grade of 2.
资助机构	The Scientific Research Foundation of Binzhou Medical University
收录类别	SCI
语种	英语
关键词[WOS]	EPOXY-ACRYLATE ; UV
研究领域[WOS]	Biochemistry & Molecular Biology ; Chemistry
WOS记录号	WOS:001219972200001
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/36206
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
通讯作者	Wang, Shanshan; Qu, Jiale
作者单位	1.Binzhou Med Univ, Sch Pharm, Yantai 264003, Peoples R China 2.Yantai Univ, Coll Chem & Chem Engn, Res Ctr Leather & Prot, Yantai 264005, Peoples R China 3.Binzhou Med Univ, Sch Special Educ & Rehabil, Yantai 264003, Peoples R China 4.Binzhou Med Univ, Dept Phys, Yantai 264003, Peoples R China 5.Chinese Acad Sci, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
推荐引用方式 GB/T 7714	Li, Guorong,Duan, Baorong,Leng, Guorui,et al. Preparation of Yellowing-Resistant Waterborne Polyurethane Modified with Disulfide Bonds[J]. MOLECULES,2024,29(9):21.
APA	Li, Guorong.,Duan, Baorong.,Leng, Guorui.,Liu, Junjie.,Zhang, Tong.,...&Qu, Jiale.(2024).Preparation of Yellowing-Resistant Waterborne Polyurethane Modified with Disulfide Bonds.MOLECULES,29(9),21.
MLA	Li, Guorong,et al."Preparation of Yellowing-Resistant Waterborne Polyurethane Modified with Disulfide Bonds".MOLECULES 29.9(2024):21.