聚丙烯腈纤维与氨纶混纺织物的快速定量方法  

Rapid quantitative method of polyacrylonitrile fiber and spandex blended fabric

作　　者：王玥[1] 孙婷婷 WANG Yue;SUN Tingting(Key Laboratory of Green Textile for Jiangsu Province Market Regulation,Jiangsu Textile Products Quality Supervision and Inspection Institute,Nanjing 210007)

机构地区：[1]江苏省纺织产品质量监督检验研究院江苏省市场监管重点实验室(绿色纺织品),江苏南京210007

出　　处：《合成纤维工业》2024年第6期97-100,共4页China Synthetic Fiber Industry

摘　　要：为解决手工拆分法和65%硫氰酸钾法定量分析聚丙烯腈(PAN)纤维与氨纶混纺织物时耗时耗力、存在操作隐患的不足,以三氯乙酸/三氯甲烷为试剂,建立了一种用于PAN纤维与氨纶混纺织物快速定量分析的方法,探讨了该方法的质量变化修正系数、溶解时间,验证了该方法的准确性,并与手工拆分法进行了对比。结果表明:三氯乙酸/三氯甲烷法较佳的分析条件为将混纺织物放入三氯乙酸/三氯甲烷溶剂(质量比11)中充分浸润后,置于20℃水浴振荡器中振荡15 min;该方法溶解PAN纤维几乎无损伤,对PAN纤维的质量变化修正系数为1.00;采用该方法对PAN纤维与氨纶混纺织物进行定量分析,实验结果准确性高,绝对偏差小于1.0%,且检测平均用时仅15 min,检测准确性和效率均优于手工拆分法,可实现PAN纤维与氨纶混纺织物的快速化、批量化定量,具有较高的应用和推广价值。To address the shortcomings of time-consuming and labor-intensive quantitative analysis of polyacrylonitrile(PAN)fiber and spandex blended fabrics using manual splitting method and 65%potassium thiocyanate method,a rapid quantitative analysis method for PAN fiber and spandex blended fabrics was established using trichloroacetic acid/trichloromethane as the reagent.The mass loss correction coefficient and dissolution time of the method were discussed,and its accuracy was verified and was compared with manual splitting method.The results showed that the optimal analysis conditions for trichloroacetic acid/trichloromethane method were to immerse the blended fabric thoroughly in trichloroacetic acid/trichloromethane solvent(mass ratio 11),and then shake it for 15 min in a 20℃water bath shaker;this method provided the dissolved PAN fibers almost without damage,and the mass loss correction coefficient of PAN fibers was 1.00;the experimental results were highly accurate with an absolute deviation of lower than 1.0%and the average detection time was only 15 min when this method was used for the quantitative analysis of PAN fiber and spandex blended fabrics;and this method is better than manual splitting method in the detection accuracy and efficiency,which can achieve the rapid and batch quantification of PAN fiber and spandex blended fabrics,so it has a promising application and promotion prospect.

关 键 词：聚丙烯腈纤维 氨纶 混纺织物 三氯乙酸/三氯甲烷试剂 快速定量分析 

分 类 号：TQ340.7[化学工程—化纤工业]