响应面法优化废旧毛涤粘面料溶解工艺

Optimization of the dissolution process of waste wool-polyesterviscose fabric and dilute by response surface method

采用磷酸/多聚磷酸混酸溶剂体系对废旧毛涤粘混纺面料中的粘胶进行溶解,混酸溶剂体系溶解粘胶的最佳工艺为P_2O_5质量分数74%,固含质量分数14%,温度25℃。采用由尿素、亚硫酸氢钠和十二烷基硫酸钠(SDS)组成的还原C体系对混纺面料中的羊毛纤维进行溶解,通过响应面法探讨了尿素浓度、亚硫酸氢钠浓度、SDS浓度、时间等参数对羊毛溶解率和角蛋白提取率的影响,优化羊毛溶解工艺条件为:尿素400 g/L,亚硫酸氢钠40 g/L,SDS 20 g/L,时间6 h,浴比1∶20,p H为11;最优溶解方案下的羊毛溶解率和角蛋白的提取率分别是89.53%和49.32%。

The use of phosphoric acid/polyphosphoric acid mixed solvent system to dissolve the viscose in the blended fabric.To have an integrative consideration,the process conditions for the dissolution of viscose were determined as follows： P_2O_5 content 74%,solid content 14%,temperature 25 ℃.After that,dissolved the wool in urea/Sodium Bisulfite/SDS dissolution system.And disscussed the effect of urea concentration,sodium bisulfite concentration,SDS concentration and time on the wool dissolution rate and keratin extraction rate by Central Composite Experiment Design.Optimization of wool dissolution process conditions： urea 400 g/L,Sodium Bisulfite 40 g/L,SDS 20 g/L,time 6 h,bath ratio 1∶20,p H 11.Under the optimum dissolved solution,the wool dissolving rate and extraction yield of keratin were 89.53% and 49.32%,respectively.