陕西科技大学学报（自然科学版）2017，Vol.35Issue(4)：84-89,6.
有机氟醇改性超支化水性聚氨酯的合成与性能研究
Study on synthesis and its properties of organic fluorinealcohol modified hyperbranched waterborne polyurethane
摘要
Abstract
The first and third generations of hyperbranched polyesters (HBPE-1 and HBPE-3) were first fabricated via the pseudo one-pot procedure,using trimethylolpropane as the core and 2,2-bis-methylolpropionic aid (DMPA) as the monomer.A polyurethane prepolymer (PU) containing NCO terminals was then synthesized by the stepwise polymerization of isophorone diisocyanate (IPDI),poly (butylenes adipate) glycol (CMA-1044),DMPA and butanediol.Next,HBPEs were reacted with PU to obtain hyperbranched polyurethanes (HBPU).A couple of organic fluorine alcohol modified hyperbranched polyurethanes (HBPUF-1 and HBPUF-3) were acquired via action between perfluorohexyl ethyl alcohol (S104) and HBPU,finally,HBPUF latexes were obtained by neutralization,adding water,and emulsification operations.Infrared spectrum (IR),proton nuclear magnetic resonance spectrum (1H NMR),transmission electron microscope (TEM),nanoparticle size analyzer,thermogravimetric analyzer (TGA),X-ray photoelectron energy spectrum (XPS) and static contact angle analyzer were utilized to examine its structure and properties.Results showed that the resultant possessed the due structure.The HBPUF latex particles presented a regularly spherical pattern with the increased diameters compared to the PU latex.Furthermore,thermal decomposition temperatures of HBPUF-1 and HBPUF-3 films at half weight loss were increased by 17 ℃ and 29 ℃,respectively,by comparison to PU film.XPS analysis indicated that the fluoroalkyl segments tended to migrate and align directionally to the air-film surface,which is the primary reason for reinforcement of the HBPUF film hydrophobicity.As a result,water static contact angles on HBPUF-1 and HBPUF-3 films were individually increased to 95.9 ° and 107.0 ° in contrast to that on the PU film (75.1 °).关键词
有机氟/超支化聚酯/水性聚氨酯/耐水性Key words
organic fluorine/hyperbranched polyester/waterborne polyurethane/water resistance分类
化学化工引用本文复制引用
郝丽芬,裴萌萌,许伟,杨百勤..有机氟醇改性超支化水性聚氨酯的合成与性能研究[J].陕西科技大学学报（自然科学版）,2017,35(4):84-89,6.基金项目
陕西省科技厅自然科学基础研究计划项目(2016JQ2031) （2016JQ2031）
陕西省科技厅科技统筹创新工程计划项目(2015KTCL01-14) （2015KTCL01-14）
中国博士后基金面上项目(2014M562515XB) （2014M562515XB）
