A fully bio-based waterborne polyurethane dispersion from vegetable oils: From synthesis of precursors by thiol-ene reaction to study of final material
A fully bio-based waterborne polyurethane dispersion from vegetable oils: From synthesis of precursors by thiol-ene reaction to study of final material
复制标题
由植物油制成的全生物基水性聚氨酯分散体：从硫醇-烯反应合成前体到最终材料的研究
DOI：
10.1016/j.porgcoat.2013.08.002
复制
发表时间：
2014-01-01
影响因子：
6.6
通讯作者：
Shen, Liang
中科院分区：
文献类型：
--
作者：
Fu, Changqing;Zheng, Zitong;Shen, Liang
以蓖麻油衍生物十一烯酸为原料，经硫醇-烯偶联（TEC）和Curtius重排反应合成了一种新型的线型饱和末端二异氰酸酯。使用傅里叶变换红外光谱、H-1核磁共振（NMR）和C-13 NMR仔细检查二异氰酸酯的结构。以该二异氰酸酯为起始原料，通过与蓖麻油和蓖麻油基羧酸型亲水扩链剂反应，制备了全生物基水性聚氨酯分散体（BPUD）。通过差示扫描量热法、热重分析、拉伸试验、硬度试验和耐水性试验对所形成的BPUD膜的热/机械性能进行了表征。采用脂肪酸二异氰酸酯和蓖麻油亲水扩链剂合成了性能良好的BPUD。(C)2013爱思唯尔有限公司版权所有。
A new linear saturated terminal diisocyanate was synthesized from castor oil-derived undecylenic acid by thiol-ene coupling (TEC) and Curtius rearrangement. The structure of the diisocyanate was carefully examined using Fourier transform infrared spectroscopy, H-1 nuclear magnetic resonance (NMR), and C-13 NMR. This diisocyanate was used as a starting material for the preparation of a fully bio-based waterborne polyurethane dispersion (BPUD) by reacting with castor oil and castor oil-based carboxylic acid-type hydrophilic chain extender, which was prepared from castor oil by using 3-mercaptopropionic acid via TEC. The thermal/mechanical properties of the formed BPUD film were characterized via differential scanning calorimetry, thermogravimetric analysis, tensile test, hardness test, and water resistance test. The fatty acid-derived diisocyanate and the castor oil-based hydrophilic chain extender were used to produce BPUD with favorable properties. (C) 2013 Elsevier B.V. All rights reserved.