Detection of cotton and spandex blended fabric fiber content by sodium hypochlorite method
In view of problems of labor-intensive,environmental hazards and significant impact on human health in traditional quantitative analysis methods of cotton and spandex blended fabric with manual separation method and N,N-dimethylformamide chemical dissolution method,a quantitative analysis method for cotton and spandex blended fabrics in sodium hypochlorite solution is studied.The stable and feasible reaction conditions are:sodium hypochlorite solution of 1.2 mol/L,reaction temperature of 80 ℃,and reaction time of 5 minutes.Based on comprehensive experimental data,the average error between this method and the manual separation method for spandex content is only 0.18％,indicating a significant improvement in testing efficiency.
cottonspandexsodium hypochlorite methodmanual separation methodquantitative analysisN,N-dimethylformamide chemical dissolution method
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