端羧基线性-超支化聚酯的制备及皮革加脂应用  

Synthesis of linear-hyperbranched polyester with carboxylic end-groups and its application in fatliquoring

作　　者：王学川[1] 郭笑笑[1] 王海军[1] 李洋[2] WANG Xue-chuan GUO Xiao-xiao WANG Haijun LI Yang(College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science Technology, Xi an 710021, China： 2. College of Chemistry and Chemical Engineering, Shaanxi University of Science Technology, Xi＇an 710021, China)

机构地区：[1]陕西科技大学轻工科学与工程学院,陕西西安710021 [2]陕西科技大学化学与化工学院,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2017年第1期16-22,共7页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(21276151);陕西省科技厅重点科技创新团队计划项目(2013KCT-08)

摘　　要：以端羟基超支化聚酯(CHBP_x)和顺丁烯二酸酐为原料,合成端羧基线性-超支化聚酯(MHBP_x),并进行中和反应,制备出阴离子型加脂剂.通过测定顺丁烯二酸酐反应率,优化出合成MHBP_x的反应条件为:顺丁烯二酸酐与CHBP_x的摩尔比为1.4∶1,反应温度为90℃,反应时间为4h.在该条件下,制备得到了三代产物(MHBP_1、MHBP_2、MHBP_3),并通过FTIR和1 H NMR等手段表征了MHBP_x的分子结构,并具有一定的稳定性,使用激光粒度分析仪测量MHBP_1、MHBP_2、MHBP_3乳液平均粒径为123.8nm、348.9nm和412.1nm.将MHBP_x应用于绵羊皮加脂工艺,并与市售加脂剂SK-70对比,考察了三代产品对成革增厚率、部位差降低率、柔软度、机械强度以及透水汽性的影响,结果表明,该类产品具有提高成革柔软度与撕裂强度的性能.The linear-hyperbranched polyester with carboxylic end-groups （MHBPX） were prepared by esterification reaction of hydroxyl terminated hyperbranched polyesters and ma-leic anhydride. Subsequently, the anionic polymers were modified with NaOH. The reaction conditions were optimized by measuring the reaction rate of maleic anhydride, and the mole rate of maleic anhydride and CHBPX is 1. 4 ： 1,the reaction temperature is 90 ℃ , and the re-action time is 4 h. The molecular structures of MHBPX were characterized by FT-IR and 1NMR,and have the outstanding stability. The sizes of the MHBPX are 123. 8 nm,348. 9 nm and 412. 1 nm. Then,the MHBPX were applied to fatliquoring process of sheep skin garment leather. The MHBPX and commercially available fatliquoring agent SK-70 were used in fatliquoring process. The results show that the softness and mechanical properties of all trea-ted leather are increased compared with SK-70.

关 键 词：线性-超支化聚酯 合成 表征 皮革加脂 

分 类 号：TS529[轻工技术与工程—皮革化学与工程]