Castor oil-based cationic waterborne polyurethane dispersions: Storage stability, thermo-physical properties and antibacterial properties
Castor oil-based cationic waterborne polyurethane dispersions: Storage stability, thermo-physical properties and antibacterial properties
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DOI：
10.1016/j.indcrop.2018.02.084
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发表时间：
2018-07-01
影响因子：
5.9
通讯作者：
Zhang, Chaoqun
中科院分区：
文献类型：
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作者：
Liang, Haiyan;Liu, Lingxiao;Zhang, Chaoqun
本研究以N-甲基二乙醇胺(MDEA)为离子中心，采用蓖麻油及其衍生物制备阳离子水性聚氨酯分散体。深入研究了多元醇官能团和离子扩链剂含量对聚氨酯分散体的粒径和抗菌性能以及所得聚氨酯薄膜的热机械、热稳定性、机械性能、水/溶剂吸收率的影响。此外，随着MDEA含量的增加和多元醇官能度的减少，所有聚氨酯分散体对副溶血性弧菌的抗菌活性都增强，但对单核细胞增生李斯特氏菌的抗菌活性很少。据我所知，这项工作首次广泛研究了蓖麻油基阳离子水性聚氨酯分散体及其聚氨酯薄膜的结构-性能关系。
In this study, castor oil and its derivative were used to prepare cationic waterborne polyurethane dispersion using N-methyl diethanolamine (MDEA) as ion center. The effect of polyol functionalities and the ionic chain extender contents on the particle size and antibacterial properties of the polyurethane dispersions, and thermo-mechanical, thermal stability, mechanical properties, water/solvent uptakes of the resulting polyurethane films were thoroughly investigated. Moreover, all the polyurethane dispersions exhibit enhanced antibacterial activity against Vibrio parahaemolyticus with the rise of MDEA content and the reduction of polyol functionalities, but rarely antibacterial activity to Listeria monocytogenes. To the best of my knowledge, this work for the first time extensively investigate the structure-property relationships of castor oil based cationic waterborne polyurethane dispersions and their polyurethane films.