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One-step hydroxylation of rubber seed oil and synthesis of green polyurethane networks thereof
Journal of Polymer Research ( IF 2.8 ) Pub Date : 2020-07-02 , DOI: 10.1007/s10965-020-02134-0
George Justine , S. Athul , C. P. Reghunadhan Nair

The unsaturation in Rubber seed oil (RSO) was converted to polyhydroxy compound (HY-RSO) in a single step reaction using potassium permanganate solution under carefully controlled conditions. The HY-RSO polyol so formed was reacted with methylene diisocyanate (MDI) to synthesize polyurethane prepolymer (PU) containing terminal isocyanate groups. Moisture aided curing of the prepolymer led to crosslinked polyurethanes bearing additional urea linkages. The cross-linked poly(urethane-urea)‘s mechanical, thermal and thermo-physical properties increased with increase in the isocyanate-content in the precursor. These properties were better than those of a PU network derived from castor oil as a reference polyol. It was demonstrated for the first time that RSO could effectively be converted to a value-added hydroxyl derivative for eventual conversion to many useful materials including polyurethanes for related applications.



中文翻译:

橡胶籽油的一步羟基化及其绿色聚氨酯网络的合成

在精心控制的条件下,使用高锰酸钾溶液在一步反应中将橡胶籽油(RSO)中的不饱和度转化为多羟基化合物(HY-RSO)。使如此形成的HY-RSO多元醇与二异氰酸甲酯(MDI)反应,以合成含有末端异氰酸酯基团的聚氨酯预聚物(PU)。预聚物的水分辅助固化导致带有附加脲键的交联聚氨酯。交联聚(氨基甲酸酯-脲)的机械,热和热物理性质随前体中异氰酸酯含量的增加而增加。这些性能优于衍生自蓖麻油作为参考多元醇的PU网络的性能。

更新日期:2020-07-02
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