羊毛角蛋白的提取及其捕获甲醛性能研究  

Extraction of wool keratin and performance of capturing formaldehyde

作　　者：曾春慧[1,2] 马悦[1] 陈子成[1] 何爱民[1] 

机构地区：[1]东北电力大学化学工程学院应化系,吉林吉林132012 [2]天津工业大学生物与纺织材料研究所,天津300160

出　　处：《中国皮革》2017年第4期35-40,48,共7页China Leather

基　　金：东北电力大学博士科研启动基金项目编号:BSJXM-201515

摘　　要：采用微波辅助还原剂二硫苏糖醇(DTT)/金属盐(Zn Cl2)/表面活性剂(SDS)溶剂体系,溶解废旧羊毛,提取高分子质量角蛋白(截留分子质量8 000~14 000)。通过单因素对比试验,分析各反应因素(p H值、微波时间、还原剂及金属盐用量、反应温度)对羊毛溶解率及角蛋白提取率的影响,并将提取的角蛋白进行皮革游离甲醛捕获试验。结果表明:在DTT浓度0.75mol/L、ZnCl_2浓度0.1mol/L、SDS浓度0.02mol/L、反应温度80℃、微波辐射时间5min、p H值为10的最佳工艺条件下,羊毛溶解率达98.6%,角蛋白提取率为68.5%。当角蛋白加入量为皮革质量的5%,捕获时间2h时,甲醛去除率为41.8%,皮革增厚率9.18%,捕获甲醛的同时对皮革有一定的填充效果。The reducing agent dithiothreitol （DTT）/metal salt （ Zncl2 ）/surfactant （SDS） solvent system was used to dissolve waste wool and extract macromolecular wool keratin （entrapment molecular mass 8 000-14 000） with microwave-assisted method. The effects on wool dissolution rate （WDR） and large molecular weight keratin extraction rate （KER） were discussed with single factors contrast test including pH value, microwave time, reducing agent concentration, metal salt dosage and reaction temperature. The experiments of capturing free formaldehyde in leather were carried out by using the extracted keratin. Results indicate that the WDR and KER can reach 98.6% and 68.5% respectively under the optimal conditions of DTr concentration 0.75moL/L, ZnCl2 concentration 0. 1mol/L, SDS concentration 0. 02mol/L, reaction temperature 80℃, microwaveassisted time 5min and pH value 10. The formaldehyde removal rate （FRR） can reach 41.8% when keratin dosage is 5% of the leather mass and capture time 2h. And the leather thiekehing rate （LTR） is 9. 18%. It shows a certain filling effect when capturing formaldehyde.

关 键 词：角蛋白 游离甲醛 微波辅助 DTF/Zncl2/SDS体系 捕获性能 

分 类 号：TS529[轻工技术与工程—皮革化学与工程]