辣根过氧化物酶催化淀粉接枝丙烯酸甲酯浆料制备及其上浆性能  

Preparation and its sizing properties of starch-poly (methyl acrylate) size catalyzed by horseradish peroxidase

作　　者：王苏[1] 王强[1] 徐进[1] 范雪荣[1] 王平[1] WANG Su WANG Qiang XU Jin FAN Xuerong WANG Ping(Key Laboratory of Eco-Textile（ Jiangnan University） , Ministry of Education, Wuxi, Jiangsu 214122, China)

机构地区：[1]生态纺织教育部重点实验室(江南大学),江苏无锡214122

出　　处：《纺织学报》2017年第6期69-74,共6页Journal of Textile Research

基　　金：国家自然科学基金项目(21674043;31401647);教育部长江学者和创新团队发展计划项目(IRT_15R26);江苏省自然科学基金项目(BK20140150);江苏高校优势学科建设工程资助项目(苏政办发[2014]37号);中央高校基本科研业务费专项资金项目(JUSRP51717A)

摘　　要：为改善淀粉浆液对涤棉混纺纱的黏附性和浆膜的力学性能,采用辣根过氧化物酶(HRP)/乙酰丙酮(ACAC)/过氧化氢(H2O2)引发体系,催化酸解淀粉接枝丙烯酸甲酯。通过傅里叶红外光谱、扫描电子显微镜和X射线衍射对接枝淀粉进行表征,并分析其流变特性。结果表明,在HRP酶催化作用下丙烯酸甲酯与未糊化酸解淀粉发生接枝共聚反应,且对酸解淀粉结晶度影响不大;淀粉接枝改性后浆液黏度增大,黏弹性增加,呈现更具弹性的流体特征;相比于酸解淀粉,含有柔性接枝支链的淀粉浆液对涤/棉黏附性有明显提高,浆膜断裂伸长率和断裂强度均有增加,力学性能得到改善。In order to improve the sizing adhesion force for polyester/cotton blended yarn and mechanical properties of the sizing film,the catalytic acidolysis preparation of starch-g-poly（ methyl acrylate）catalyzed by horseradish peroxidase（ HRP） in the presence of hydrogen peroxide（ H2O2） and acetylacetone（ ACAC） was studied. The grafted starch was characterized by FT-IR,SEM and XRD,and the rheological characteristics were analyzed. The results show that under the catalytic action of HRP,methyl acrylate and starch which is not gelatinized and acidolyzed is subjected to grafting copolymerization reaction,which has no effect on the crystallinity of acidolysis starch; the graft modification increased the viscosity and viscoelasticity of the acidolysis starch,and the grafted starch slurry exhibits a more elastic fluid behavior. Compared with the acidolysis starch,the adhesion force of the grafted starch slurry for the polyester/cotton blended yarn is obviously improved. The Elongation at break and breaking strength of the grafted starch film increases,and the film mechanical properties are improved.

关 键 词：淀粉 辣根过氧化物酶 丙烯酸甲酯 流变特性 黏附力 浆膜性能 

分 类 号：TS103.846[轻工技术与工程—纺织工程] Q539.1[轻工技术与工程—纺织科学与工程]