Results from studies of the alkaline hydrolysis of polyethylene terephthalate fiber to terephthalic acid by modified aqueous solutions of ammonium salts of various chemical nature are presented. The quaternary ammonium salts enabling the degree of substrate conversion, yield of terephthalic acid, and selectivity of polyester fiber reprocessing to be improved by changing the amorphous-crystalline structure of the polymer are determined.

中文翻译：

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铵盐对聚酯纤维水解的影响

提出了通过改性各种化学性质的铵盐水溶液将聚对苯二甲酸乙二醇酯纤维碱水解为对苯二甲酸的研究结果。确定了能够通过改变聚合物的无定形晶体结构来提高底物转化度，对苯二甲酸的收率和聚酯纤维后处理的选择性的季铵盐。