中国塑料2024，Vol.38Issue(4)：19-25,7.DOI:10.19491/j.issn.1001-9278.2024.04.004
聚乳酸基水性聚氨酯的制备及其在合成革中的应用研究
Study on preparation of poly(lactic acid)-based waterborne polyurethane and its application in synthetic leathers
摘要
Abstract
Poly(lactic acid)(PLA)-based waterborne polyurethane(WPU)was synthesized using PLA-OH and hexa-methylene diisocyanate as raw materials with different contents of 2,2-dimethylolbutyric acid(DMBA)as a hydrophilic chain extender.Then,the PLA-WPU adhesive film and ultrafine fiber synthetic leathers were prepared.The particle size of the PLA-WPU lotion decreased with an increase in the DMBA content,and however,its solid content increased.The resultant PLA-WPU superfine fiber synthetic leather also obtained an increase in the tensile strength and maximum load but a decrease in the water contact angle.The solid content of the PLA-WPU lotion containing 5.5 wt%DMBA reached 35.4%,and its particle size was 196.37 nm.In this case,the tensile strength of PLA-WPU superfine fiber syn-thetic leather was 29.9 MPa,which was as about 1.7 times as that of the superfine fiber substrate.In addition,the water contact angle of the PLA-WPU superfine fiber synthetic leather decreased to 73 ° when the DMBA content increased to 5.5%.关键词
水性聚氨酯/聚乳酸二元醇/亲水扩链剂/超细纤维合成革Key words
waterborne polyurethane/poly(lactic acid diol)/hydrophilic chain extender/microfiber synthetic leather分类
化学化工引用本文复制引用
沈丹彤,薛雨亭,李荣杰,徐芳,翁云宣..聚乳酸基水性聚氨酯的制备及其在合成革中的应用研究[J].中国塑料,2024,38(4):19-25,7.基金项目
国家重点研发计划(2021YFB3801902、2021YFB3801905) （2021YFB3801902、2021YFB3801905）
