蓖麻油
聚氨酯
胶粘剂
己二酸
材料科学
化学
化学工程
高分子化学
有机化学
复合材料
工程类
图层(电子)
作者
Lingxiao Liu,Henghui Deng,Wenbo Zhang,Samy A. Madbouly,Zhipeng He,Jifu Wang,Chaoqun Zhang
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2020-12-17
卷期号:9 (1): 147-157
被引量:23
标识
DOI:10.1021/acssuschemeng.0c05936
摘要
In this paper, two novel fully renewable internal emulsifiers have been successfully synthesized from epoxidized soybean oil and natural acids (adipic and pimelic acid) by a solvent-free and self-catalytic method. It is found that the emulsifiers show similar chemical structure and functions with typical petroleum based internal emulsifiers (dimethylol butanoic acid and dimethylol propionic acid), in which the hydroxyl groups act as a cross-linking and the carboxylic acid groups provide the ionic segment. These two novel internal emulsifiers were employed together with castor oil to prepare a series of high biocontent anionic waterborne polyurethane dispersions (PUDs). The unique structure of these two emulsifiers and their good compatibility with castor oil offer PUDs excellent storage stability. Additionally, the biocontent of the polyurethane are high up to 77.7%. Moreover, the adhesive properties of the biobased pressure sensitive adhesives (PSA) were comprehensively investigated by shear resistance, tack, and 180° peel strength test. The PSAs had a shear strength of 1.18 h to more than 100 h, a tack of 1.78–5.66 N, and a peel strength of 1.23–2.77 N/mm, all WPU PSA show good pressure sensitive adhesive properties, which would further expand the application of these novel vegetable oil-based waterborne PUDs.
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