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Effect of acid value on the esterification mechanism of maleinized soybean oil with cotton

机译:酸值对马来化大豆油与棉花酯化反应机理的影响

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Aqueous solutions of maleinized soybean oil (MSO) were evaluated as formaldehyde-free reagents for cellulosic textiles. The reactivity of cotton cellulose with MSO reagents (having acid values of 156 and 230 mg KOH/g) neutralized with aqueous ammonia, in excess of functional groups, was studied using diffuse reflectance infrared Fourier transform spectro-scopy. The acid value of aqueous ammonia-neutralized MSO influenced the formation of protonated amide intermediates. Cyclic anhydride and protonated amide functional groups were identified as reaction intermediates, which resulted in carboxylic ester linkages between MSO and cellulose upon elevated temperature curing.
机译:评估了马来化大豆油(MSO)的水溶液作为纤维素纺织品的无甲醛试剂。使用漫反射红外傅里叶变换光谱技术研究了棉纤维素与MSO试剂(酸值分别为156和230 mg KOH / g)的反应,该试剂被氨水中和,官能团过量。氨水中和的MSO的酸值影响质子化酰胺中间体的形成。环酸酐和质子化酰胺官能团被确定为反应中间体,在高温固化后,这导致MSO和纤维素之间形成羧酸酯键。

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