A Study on the Weight Loss of Polyester Fabric in caustic Soda Solution of Organic Solvent/Water

유기용매/ 물의 가성소오다 용액에서 폴리에스테르 직물의 알칼리 가공에 관한 연구

In order to know the effect of solvent on the rate of weight loss, polyester fabrics were treated in caustic soda solution of organic solvents/water, such as methyl alcohol, ethyl alcohol, n-propyl alcohol, acetone, N,N'-dimethylformamide and tetrahydrofuran. The following results were obtained. The rate of weight loss was increased by treating fabrics in organic solvent/water caustic soda solution. In alcoho/water caustic soda solution, it is considered that the effect of solvation and that of nucleophilicity of alkoxide ion were large at the lower and higher alcohol content in water, respectively. Generally, the tensile strength of the fabric treated in organic solvent/water caustic soda solution was decreased, especially in PrOH added solution. The degree of crystallinity of the fabric treated in organic solvent/water caustic soda solution was slightly decreased or increased, compared with that of the fabric treated in aqueous caustic soda solution.