一种阴-非离子型聚氨酯表面活性剂的制备及性能  

Preparation and properties of anionic-nonionic polyurethane surfactant

作　　者：强西怀[1] 孙哲[2] 陈渭[1] 陈苗苗[1] 黄启恒 许伟[1] 

机构地区：[1]陕西科技大学资源与环境学院,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）》2015年第6期77-81,共5页Journal of Shaanxi University of Science & Technology

基　　金：陕西省科技厅科技计划项目(2012JM6013)

摘　　要：以氢化苯基甲烷二异氰酸酯(HMDI)和聚乙二醇(PEG-600)为主要原料、实验室自制的二羧基二元醇(D-PMA)为亲水扩链剂、合成了一种主链嵌入聚环氧乙烷链段、侧链含有大量羧基的阴-非离子型高分子聚氨酯表面活性剂(I-NPU),采用红外光谱对扩链剂和产物的结构进行了分析,证明扩链剂引入到了聚氨酯主链上.并对产物的粒径分布、表面张力(γcmc)、临界胶束浓度(cmc)及电解质对其性能的影响进行了研究.结果表明:该表面活性剂的粒径分布较窄,表面性能优异,其cmc为84.37mg/L,γ_(cmc)为42.32 mN/m;且电解质能够明显提高该表面活性剂的表面活性,增大乳液的平均粒径.A kind of anionic‐nonionic polyurethane surfactant （I‐NPU ） with the structure of polyether （EO） embedded in main chain ,as well as a large number of carboxyl suspended in side chain was synthesized ,which was mainly based on dicyclohexylmethylmethane‐4 ,4 ,‐di‐isocyanate （HMDI） ,polyethylene glycol 600 （PEG‐600） and di‐carboxyl glycol （D‐PMA） as hydrophilic chain extender .The structure of I‐NPU and D‐PMA was characterized by means of Fourier Transmission Spectroscopy （FTIR） ,which indicated that the chain extender was introduced into the main chain of polyurethane .The distribution of particle size ,the surface properties （γcmc ） ,the critical micelle concentration （cmc） ,as well as the influence of electro‐lyte on these properties was measured ,which indicated that I‐NPU had excellent surface properties ,whose cmc was 84 .37 mg/L andγcmc could be as low as 42 .32 mN/m .The surface activity of I‐NPU was improved after adding electrolyte solution of NaCl ,but the average particle size of it became larger .

关 键 词：阴-非离子 聚氨酯 表面活性剂 电解质 

分 类 号：O633.22[理学—高分子化学]