丙酸酯化-叔胺化淀粉浆料的制备及其黏附性能  

Preparation and adhesion properties of propionylated-tertiary aminated starch sizing agent

作　　者：张悦 李伟 吴宇洁[1] 程雪冬 孟祥 ZHANG Yue;LI Wei;WU Yujie;CHENG Xuedong;MENG Xiang(College of Textiles and Garments,Anhui Polytechnic University,Wuhu,Anhui 241000,China;State Key Laboratory of Molecular Engineering of Polymers,Fudan University,Shanghai 200438,China;Edelwide Medcial Technology(Suzhou)Co.,Ltd.,Suzhou,Jiangsu 215000,China)

机构地区：[1]安徽工程大学纺织服装学院,安徽芜湖241000 [2]聚合物分子工程国家重点实验室(复旦大学),上海200438 [3]爱德维德医疗科技(苏州)有限公司,江苏苏州215000

出　　处：《纺织学报》2024年第1期146-151,共6页Journal of Textile Research

基　　金：安徽省高校优秀青年人才支持计划项目(gxyq2022024);安徽省纺织工程技术研究中心、安徽省高等学校纺织面料重点实验室开放基金项目(2021AETKL17);安徽工程大学校级科研项目(Xjky2022081);聚合物分子工程国家重点实验室(复旦大学)开放研究课题项目(K2022-44)。

摘　　要：为改善淀粉浆料的黏附性能,以提升淀粉浆料对经纱的上浆质量,以丙酸酐(PA)为酯化剂,二甲氨基氯乙烷盐酸盐(DMC-HCl)为叔胺醚化剂,采用固定PA用量及改变DMC-HCl用量的方式,以水为介质,在弱碱性和低温条件下,对酸解淀粉(AHS)进行丙酸酯化-叔胺化处理,制备出一系列具有不同总取代度的丙酸酯化-叔胺化淀粉(PTAS)。对其进行化学结构表征、元素分析、颗粒形貌观察分析以及取代度测定,并对其与涤纶、涤/棉与棉粗纱间黏附性,以及浆液表面张力进行考察。结果表明:固定PA对AHS质量分数为4.63%、改变DMC-HCl用量为10~40 g,可制备出丙酸酯化程度为0.030、叔胺化程度为0.010~0.035的PTAS样品;化学结构表征与元素分析结合证实了PTAS的成功制备,PTAS颗粒仍保持颗粒态形貌,但部分颗粒表面产生损伤;这种复合变性能够明显改善淀粉对涤纶、棉纤维的黏附性能,提升淀粉浆液的表面活性,表现为PTAS对涤纶、涤/棉及棉3种粗纱的黏合力均明显高于AHS,表面张力明显低于后者;随着PTAS总取代度的增加,其表面张力逐渐降低、黏合力逐渐增大、对棉纤维黏附性的提升优于对涤纶纤维。Objective As is well known,natural starch presentsan inadequate adhesion to fibers,due to numerous hydroxyls and cyclic structure on the starch chains.The adhesion has the main function of enhancing yarn strength by bonding the fibers in the warp yarns and lessening warp surface hairs by more than 80%by bonding the hairs onto warp body.Therefore,this study aims to improve the adhesion of starch to cotton and polyester fibers by using a new starch derivative,propionylated-tertiary aminated starch(PTAS),for promoting sizing quality of the warp yarns with the new starch derivative sizing agent(PTAS).Method A series of PTAS samples with different total degrees of substitution were prepared by propionylation-tertiary amination of acid-hydrolyzed starch(AHS)with propionic anhydride(PA)as esterifying agent and 2-dimethylaminoethyl chloride hydrochloride(DMC-HCl)as etherifying agent,and with the method of fixing the amount of PA as well as altering the amount of DMC-HCl,under weak alkaline and low temperature conditions,in an aqueous medium.In order to reveal the successful preparation of PTAS,the chemical structure of PTAS was characterized by Fourier transform infrared(FT-IR)spectroscopy,while itselemental analysis was carried out by a X-ray energy spectrometer.The surface morphology of PTAS particles was observed and analyzed by a scanning electron microscope,and the effect of modification on the surface morphology of PTAS granules was clarified.The modification levels of propionylation and tertiary amination were determined by titration analysis and Kjeldahl method,respectively.The effectsof modification on the adhesion between starch and polyester,polyester/cotton and cotton roving,and the surface tension of starch paste,were also investigated,and the adhesion was investigated by a Chinese standard method(FZ/T 15001-2008)via measuring the bonding strength of slightly sized roving.The measurement mainly includes three processes:(a)forming a starch,(b)immersing the roving and then air-drying,and(c)conducting tensile t

关 键 词：淀粉 浆料 丙酸酯化-叔胺化 取代度 黏附性能 

分 类 号：TS103.8[轻工技术与工程—纺织工程]