塑性醋酸酯淀粉用于纯棉特细纱的上浆性能  

Research on the plastic acetate starch applied to sizing for superfine cotton yarns

作　　者：周丹 尹伊秋 沈艳琴 武海良 姚一军 ZHOU Dan;YIN Yiqiu;SHEN Yanqin;WU Hailiang;YAO Yijun(School of Textile Science and Engineering,Xi'an Polytechnic University,Xi'an 710048,China)

机构地区：[1]西安工程大学纺织科学与工程学院,西安710048

出　　处：《现代纺织技术》2023年第2期159-166,共8页Advanced Textile Technology

基　　金：陕西省三秦学者创新团队经费资助项目;陕西省教育厅专项科研计划项目(21JK0664)。

摘　　要：以醋酸酐为改性剂对淀粉乙酰化处理制备了醋酸酯淀粉,进一步通过柠檬酸氢二铵对其增塑得到了塑性醋酸酯淀粉浆料。分析了醋酸酯淀粉的化学结构,研究了塑性醋酸酯淀粉浆料的浆膜力学性能和增塑机制,测试了塑性醋酸酯淀粉浆液黏度和热稳定性,并将其用于纯棉特细纱上浆工艺实践。红外测试表明醋酸酯淀粉结构上有酯基特征峰;与醋酸酯淀粉相比,塑性醋酸酯淀粉浆膜呈现高的断裂伸长率,这是由于柠檬酸氢二铵与醋酸酯淀粉结构上的羟基所形成的氢键作用,削弱了淀粉自身氢键网状结构,使分子链柔顺性提高。塑性醋酸酯淀粉浆液表现出高的黏度热稳定性,对纯棉特细纱浆纱效果良好。With China’s goal of peaking carbon emissions before 2030 and achieving carbon neutrality before 2060, the development of low carbon starch has become an important research and development direction of low carbon textile starch weaving. Starch has been widely developed and applied in the field of low carbon textile starch because of its rich source, renewablity, modification, biodegradability and other properties. However, the strong network structure of hydrogen bonds within and between molecules of starch leads to hard and brittle film forming, which is difficult to meet the requirements of sizing weaving. In order to overcome the defect of starch membrane formation, researchers modified the starch structure to weaken the intramolecular and intermolecular hydrogen bond network structure through various methods such as esterification, etherification, grafting and plasticizer, and introduced new substituents to further destroy the hydrogen bond interaction in the starch structure. Acetate starch, with its advantages of low gelatinization temperature and high viscosity thermal stability, provides potential for low temperature and low carbon sizing. However, acetate starch still has the problem of brittle film forming. The plasticizing mechanism of acetate starch and the correlation between plasticizer and plastic acetate starch yarn have not been reported publicly.In this paper, acetate starch was prepared by acetylation of starch with acetic anhydride as the modifier, and plastic acetate starch size was obtained by plasticizing with diammonium hydrogen citrate. The chemical structure of acetate starch was analyzed, the size film mechanical properties and plasticizing mechanism of plastic acetate starch were studied, the viscosity and thermal stability of plastic acetate starch size were tested, and the plastic acetate starch size was applied to the sizing practice of superfine cotton yarns. The FT-IR results showed that the ester group characteristic peaks appeared on the structure of acetate starch. Compared w

关 键 词：柠檬酸氢二铵 塑性醋酸酯淀粉 浆膜性能 浆纱性能 

分 类 号：TS103.84[轻工技术与工程—纺织工程]