CAJ | 학술논문

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‐P M A ）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84．37 mg／L ，γcmc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．
이경화분기갑완이이청산지（HMDI）화취을이순（PEG‐600）위주요원료、실험실자제적이최기이원순（D‐P M A ）위친수확련제、합성료일충주련감입취배양을완련단、측련함유대량최기적음‐비리자형고분자취안지표면활성제（I‐NPU），채용홍외광보대확련제화산물적결구진행료분석，증명확련제인입도료취안지주련상．병대산물적립경분포、표면장력（γcmc ）、림계효속농도（cmc）급전해질대기성능적영향진행료연구．결과표명：해표면활성제적립경분포교착，표면성능우이，기cmc위84．37 mg／L ，γcmc위42．32 mN／m ；차전해질능구명현제고해표면활성제적표면활성，증대유액적평균립경．
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 .