CAJ | 학술논문

以烯丙基二甲胺（ADMA）和1-溴代直链烷烃（溴代烷）为原料，采用丙酮回流法合成了烯丙基二甲基十二烷基溴化铵（C12）、烯丙基二甲基十四烷基溴化铵（C14）、烯丙基二甲基十六烷基溴化铵（C16）3种烯丙基型可聚合表面活性剂，优化了合成条件，C12， C14， C16的较佳合成条件：丙酮作溶剂、n（ADMA）∶n（溴代烷）=1∶1.1、反应温度55～65℃、反应时间56～60 h，该条件下产品的收率分别为78.15%，73.82%，68.20%。用FTIR、1H NMR和元素分析对产品结构进行表征，通过测定其表面活性及絮凝性能，考察产品结构对性能的影响，结果表明，C12，C14，C16的临界胶束浓度和临界表面张力依次减小，分别为6.5，1.7，0.55 mmol/L和37.2，35.1，33.5 mN/m；C12和C14的Krafft点低于0℃，C16的Krafft点为8℃；发泡、乳化及絮凝能力的强弱顺序为：C16＞C14＞C12。
이희병기이갑알（ADMA）화1-추대직련완경（추대완）위원료，채용병동회류법합성료희병기이갑기십이완기추화안（C12）、희병기이갑기십사완기추화안（C14）、희병기이갑기십륙완기추화안（C16）3충희병기형가취합표면활성제，우화료합성조건，C12， C14， C16적교가합성조건：병동작용제、n（ADMA）∶n（추대완）=1∶1.1、반응온도55～65℃、반응시간56～60 h，해조건하산품적수솔분별위78.15%，73.82%，68.20%。용FTIR、1H NMR화원소분석대산품결구진행표정，통과측정기표면활성급서응성능，고찰산품결구대성능적영향，결과표명，C12，C14，C16적림계효속농도화림계표면장력의차감소，분별위6.5，1.7，0.55 mmol/L화37.2，35.1，33.5 mN/m；C12화C14적Krafft점저우0℃，C16적Krafft점위8℃；발포、유화급서응능력적강약순서위：C16＞C14＞C12。
Three polymerizable surfactants with allyl group,namely allyldimethyldodecyl ammonium bromide(C12),allyldimethyltetradecyl ammonium bromide(C14), allyldimethylhexadecyl ammonium bromide(C16),were synthesized from allyldimethylamine(ADMA) and straight chain 1-bromoalkane. Under the optimized synthetic conditions of acetone as solvent,molar ratio of ADMA to straight chain 1-bromoalkane 1∶1.1,55-65℃ and 56-60 h,the yields of the products were 78.15%,73.82% and 68.20%, respectively. The products were characterized by means of IR,1H NMR and elemental analysis. The relationships between structures and performances of C12,C14 and C16 were investigated through the determination of their surfactivity and flocculation. The results showed that,with the increase of the alkyl chain length,their critical micelle concentrations and corresponding surface tensions decreased in turn to 6.5,1.7 and 0.55 mmol/L,and 37.2,35.1 and 33.5 mN/m,respectively. The Krafft points of both C12 and C14 are less than 0℃,and that of C16 is 8℃. All of their foaming ability, emulsifying ability and flocculation to kaolin solution are in order of C16>C14>C12.