基于羧酸型扩链剂超支化水性聚氨酯的合成和表征  

Synthesis and characterization of hyperbranched waterborne polyurethanebased on acid type chain extender

作　　者：强涛涛[1] 任静[1] 王学川 

机构地区：[1]陕西科技大学资源与环境学院,西安710021 [2]陕西农产品加工技术研究院,西安710021

出　　处：《功能材料》2015年第15期15041-15046,共6页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(21276151);陕西省科技厅科技计划资助项目(2011SZS007);陕西省重点科技创新团队资助项目(2013KCT-08);陕西科技大学科研创新团队资助项目(TD12-04);陕西科技大学研究生创新基金资助项目

摘　　要：以二乙醇胺(DEA)和丁二酸酐为原料,甲醇为溶剂,合成一种新型羧酸型亲水单体N,N-二羟乙基-2-氨基丙酸(DMCA),优化得到DMCA的最佳条件为:冰水浴0℃,n(DEA)∶n(丁二酸酐)为1∶1.2,时间为80 min,甲醇用量为300 m L/mol(DEA),在最佳条件下DMCA的转化率为86.18%。采用红外(FTIR)、核磁(1H NMR)、X射线衍射(XRD)、热重(TG)、元素分析等手段对DMCA进行结构和性能的表征。以DMCA作为亲水扩链剂制备超支化水性聚氨酯DMCA-HWPU,其性能检测结果表明,DMCA-HWPU为非结晶性体系,其乳液呈乳白色泛蓝光,无沉淀,乳液稳定性高,并且具有很好的热稳定性。With diethanolamine( DEA) and succinic anhydride as raw materials and methanol alcohol as solvent,a new carboxylic acid type of hydrophilic monomer DMCA was synthesized. The best conditions for synthetic hydrophilic monomer were: temperature 0 ℃,mole ratio 1∶ 1. 2,time 80 min,solvent dosage was 300 m L / mol( DEA). Under the best conditions,the conversion rate had reached 86. 18%. The structure and performance was charaterized by FT-IR,1H NMR,XRD,TG and element analysis. Hyperbranched waterborne polyurethane DMCA-HWPU was synthesized by using DMCA as hydrophilic chain extender. Performance test results showed that: DMCA-HWPU system is non-crystalline,the emulsion is milky and blue light without precipitation,has high emulsion stability and good thermal stability.

关 键 词：亲水扩链剂 端羟基超支化聚合物 超支化水性聚氨酯 DMCA 

分 类 号：TQ322.4[化学工程—合成树脂塑料工业]