端氟烷基超支化聚合物无皂乳液的制备及应用  

Preparation of fluoroalkyl-terminated hyperbranched polymer soap-free latex and its application

作　　者：许伟[1,2] 王莎[3] 王学川[1] 杨淑琴 刘向国 

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]淄博大桓九宝恩皮革集团有限公司,山东淄博256400 [3]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）》2016年第4期99-103,共5页Journal of Shaanxi University of Science & Technology

基　　金：陕西省教育厅专项自然科学计划项目(15JK1103);中国博士后科学基金特别资助项目(2015T80764);陕西科技大学博士科研启动基金项目(BJ14-03)

摘　　要：以异氟尔酮二异氰酸酯(IPDI)和聚乙二醇800(PEG800)、二羟甲基丙酸(DMPA)为单体,通过逐步聚合反应合成了-NCO封端的聚氨酯预聚体(PU);再利用全氟己基乙醇与PU反应合成了两端分别为氟烷基和-NCO的含氟聚氨酯预聚体(FPU);再通过接枝反应使FPU与端羟基超支化聚合物(HPAE)共聚制得一种新型端氟烷基超支化聚合物(FHBPU),最后经中和、加水分散即制得FHBPU无皂乳液并用于山羊蓝湿革的防水处理.用红外光谱(IR)、核磁共振氢谱(1 H NMR)、透射电镜(TEM)、纳米粒度仪及静态接触角测量仪分别对产物结构、乳胶粒形貌、粒径大小与分布及坯革表面水静态接触角(WCA)进行表征.结果表明,合成产物具有预期结构.乳胶粒呈不规则球状,平均粒径为238.8nm,多分散系数PDI=0.261,粒径分布较宽.蓝湿革经其质量1.6%的FHBPU有效物处理后,粒面WCA可达142.9°,具有良好的疏水性.Polyurethane prepolymer （PU） with NCO terminal groups was first prepared by the stepwise polymerization of isophorone diisocyanate （ IPDI ）,polyethylene glycol （PEG800） and dimethylolpropionic acid （DMPA）. Then, fluorine-containing polyurethane prepolymer （FPU） with fluoroalkyl and NCO terminal groups was synthesized by reaction of perlluorohexyl ethyl alcohol and PU . Next,novel fluoroalkyl terminated hyperbranched polyurethane （FHBPU） was fabricated via the grafting reaction of FPU and hydroxy termianted hyperbranched polymer （HPAE）. Finally, FHBPU soap-free emulsion was obtained by neu-tralization adding water,and high-speed stirring operations and applied in the wet-blue goat waterproofing treatment. Infrared spectrum （IR ）, proton nuclear magnetic resonance （^1 H NMR） ,Transmission Electron Microscope （TEM） , nano particle size, Z potential analyzer and static contact angle analyzer were utilized to characterize structure of the resultants, particle morphology and average size,ζ potential as well as hydrophobicity such as water contact angle on grain side of the treated crut leather. Results showed that final product had duestructure. FHBPU latex particles presented irregular sphere with a polydispersity index of 0. 261 and an average diameter of 238. 8 nm. The treated crust leather by 1. 6 % FHBPU active ingredients based on the weight of wetblue goat had favorable hydrophobicity and water contact angle on its grain side attained 142. 9 °.

关 键 词：超支化聚合物 皮革防水 聚氨酯 无皂乳液 

分 类 号：TS529.1[轻工技术与工程—皮革化学与工程]