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Design and Synthesis of Waterborne Polyurethanes
Advanced Materials ( IF 29.4 ) Pub Date : 2018-03-15 , DOI: 10.1002/adma.201706237
Soo-Young Kang 1 , Zhaoxia Ji 1 , Ling-Fang Tseng 1 , Sara A. Turner 1 , Dinara A. Villanueva 1 , Rhiannon Johnson 1 , Ariana Albano 1 , Robert Langer 2, 3, 4, 5
Affiliation  

Waterborne polyurethanes (WBPUs) have attracted increasing attention in a wide range of industrial applications because of their versatile properties as well as ecofriendly nature. Although extensive research has been carried out on WBPU synthesis, the roles of some of the key synthesis components remain unclear. In this study, through systematically controlling and fine tuning the precursor compositions and reaction conditions, over 300 WBPUs are synthesized. This research enables the roles of several key components that govern WBPU physicochemical properties and ultimately the potential WBPU applications to be identified. Using hair styling as an example, it is demonstrated that only the WBPUs with an optimal range of properties (e.g., Young's modulus >150 MPa, elongation at break: 15–300%, moisture uptake <10%) can achieve strong styling performance. To further improve the natural‐feel sensory benefits in the final styling products, a number of fatty acids with different carbon chain lengths or unsaturation levels are incorporated into WBPUs. Among the ten fatty acids studied, linoleic acid is identified as the most preferred additive. Both in vitro and in vivo testing demonstrate that WBPUs with optimal properties are promising materials for developing strong, long‐lasting styling products with natural feel.

中文翻译:

水性聚氨酯的设计与合成

水性聚氨酯(WBPU)的通用性和环保特性使其在广泛的工业应用中引起了越来越多的关注。尽管已对WBPU合成进行了广泛的研究,但一些关键合成成分的作用仍不清楚。在这项研究中,通过系统地控制和微调前体的组成和反应条件,合成了300多个WBPU。这项研究使确定WBPU物理化学性质以及最终确定WBPU潜在应用的几个关键组件的作用成为可能。以头发定型为例,证明只有具有最佳性能范围的WBPU(例如,杨氏模量> 150 MPa,断裂伸长率:15–300%,水分吸收< 10%)可以实现强大的造型性能。为了进一步改善最终定型产品的自然感觉感官效果,WBPU中加入了许多具有不同碳链长度或不饱和度的脂肪酸。在所研究的十种脂肪酸中,亚油酸被确定为最优选的添加剂。体外和体内测试均表明,具有最佳性能的WBPU是有前途的材料,可用于开发具有自然手感的坚固,持久的定型产品。
更新日期:2018-03-15
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