CAJ | 학술논문

通过三步反应，以甲基丙烯酸二甲氨基乙酯（DM）、环氧氯丙烷（ECH）和3种长链烷基叔胺（十二烷基叔胺、十四烷基叔胺、十六烷基叔胺）为主要原料，合成了3种反应型阳离子 Gemini 表面活性剂，即C12-3(OH)-DM、C14-3(OH)-DM和C16-3(OH)-DM。利用傅里叶变换红外光谱仪（FTIR）、核磁共振仪（1H NMR）和元素分析仪表征了目标产物结构，通过 DCTA21表面界面张力仪测定其在水溶液中的表面张力、临界胶束浓度(cmc)以及其热力学常数，并测定了其水溶液的乳化性能和泡沫性能。结果表明：与传统单子季铵盐型表面活性剂相比，Gemini 表面活性剂 Cm-3(OH)-DM（m=12，14，16）具有更高的表面活性，其临界胶束浓度(cmc)分别为0.0265mmol/L、0.0169mmol/L、0.0083mmol/L，对应的表面张力γcmc分别为32.1mN/m、30.1mN/m、27.7mN/m。
통과삼보반응，이갑기병희산이갑안기을지（DM）、배양록병완（ECH）화3충장련완기숙알（십이완기숙알、십사완기숙알、십륙완기숙알）위주요원료，합성료3충반응형양리자 Gemini 표면활성제，즉C12-3(OH)-DM、C14-3(OH)-DM화C16-3(OH)-DM。이용부리협변환홍외광보의（FTIR）、핵자공진의（1H NMR）화원소분석의표정료목표산물결구，통과 DCTA21표면계면장력의측정기재수용액중적표면장력、림계효속농도(cmc)이급기열역학상수，병측정료기수용액적유화성능화포말성능。결과표명：여전통단자계안염형표면활성제상비，Gemini 표면활성제 Cm-3(OH)-DM（m=12，14，16）구유경고적표면활성，기림계효속농도(cmc)분별위0.0265mmol/L、0.0169mmol/L、0.0083mmol/L，대응적표면장력γcmc분별위32.1mN/m、30.1mN/m、27.7mN/m。
Three reactive cationic Gemini surfactants,C12-3(OH)-DM,C14-3(OH)-DM and C16-3(OH)- DM,were synthesized through three-step reaction using 2-dimethylamino ethyl methacrylate (DM), Epichlorohydrin (ECH) and three kinds of long chain alkyl tertiary amine(N,N-dimethyldodecylamine, N,N-Dimethyltetradecylamine andN,N-dimethylhexadecylamine) as main raw material. The structure of Gemini surfactants was confirmed by FTIR,1H NMR and elemental analysis,and their abilities to lower water surface tension and critical micelle concentrations (cmc) were also evaluated by surface tension measurement. Foaming and emulsification properties were also studied. The results showed that three reactive cationic Gemini surfactants Cm-3(OH)-DM(m=12,14,16)showed superior surface properties to conventional monomeric surfactant,and their critical micelle concentrations (cmc) were 0.0265mmol/L,0.0169mmol/L and 0.0083mmol/L,γcmc were 32.1mN/m,30.1mN/m and 27.7mN/m.