溶胀剂U预处理对真丝织物性能及丝纤维结构的影响  

Effect of Pre-treatment with Swelling Agent U on Fibre Structure and Property of Silk Fabrics

作　　者：顾青[1] 沈一峰[1,2] 王景景[1] 杨雷[1,2] 林鹤鸣[1,2] 

机构地区：[1]浙江理工大学先进纺织材料与制备技术教育部重点实验室,杭州310018 [2]浙江理工大学,生态染整技术教育部工程研究中心,杭州310018

出　　处：《蚕业科学》2011年第1期153-159,共7页ACTA SERICOLOGICA SINICA

基　　金：优先主题重大工业项目(No.2010C01024)

摘　　要：为利用溶胀剂的膨化和分纤作用提高真丝织物的接枝增重率和改善织物的性能,采用不同浓度的溶胀剂U对真丝织物进行预处理,再以甲基丙烯酰胺(MAA)为单体,过硫酸钾(KPS)为引发剂对真丝织物接枝增重。选择体积分数为10%的溶胀剂U对真丝织物进行预处理,丝纤维直径由11.90μm增加至14.24μm,起到了较好的膨化和分纤作用,织物的强力、折皱回复角、白度损失也较小。与未进行预处理的真丝织物相比,用10%溶胀剂U预处理后真丝织物的接枝增重率提高,织物的强力、折皱回复角、白度得到改善。真丝织物经10%溶胀剂U预处理后进行丝纤维微观结构形貌表征:红外光谱(IR)显示丝纤维仍保持着β-折叠结构;扫描电子显微镜(SEM)观测到丝纤维表面覆盖的聚合物减少,横截面变粗,直径变大,出现分纤现象和微孔特征;X-射线衍射分析表明丝纤维的结晶度提高。To increase the weight gain of grafting on silk fabrics and improve the performance of silk fabrics by utilizing the swelling agent＇s swelling and defibrillation properties, different concentrations of swelling agent U were used to pretreat the silk fabric. Then, methacrylamide （MAA） was used as the monomer and potassium persulfate （KPS） was used as the initiator to do grafting on the silk fabric. It was found that pre-treatment with swelling agent U of 10% volume fraction could increase silk fiber＇s diameter from 11.90 μm to 14.24 μm, showing good swelling and defibrillation effect. Meanwhile, loss of strength, creasy recovery angle and whiteness of the fabrics was relatively low. Compared to silk fabrics that had not been pre-treated with swelling agent, the 10% swelling agent U pre-treated silk fabrics had higher weight gain of grafting and improved strength, creasy recovery angle and whiteness. Infrared spectrum （IR） of the 10% swelling agent U pre-treated silk fabrics showed that the fiber was still at its,8-sheet structure. Scanning electron microscopy （SEM） revealed that the silk fiber＇s surface was covered by less polymers, the fiber＇s cross section and diameter were increased, and the fiber was defibrillated and had microporous features. X-ray diffraction analysis showed that crys-tallinity of the silk fiber had also been enhanced.

关 键 词：真丝织物 溶胀剂U 纤维结构 甲基丙烯酰胺 接枝增重 

分 类 号：TS141[轻工技术与工程—纺织材料与纺织品设计]