精细石油化工
精細石油化工
정세석유화공
SPECIALITY PETROCHEMICALS
2009年
4期
22-25
,共4页
季铵盐%阳离子表面活性剂%合成%十二烷基二甲基叔胺%环氧氯丙烷
季銨鹽%暘離子錶麵活性劑%閤成%十二烷基二甲基叔胺%環氧氯丙烷
계안염%양리자표면활성제%합성%십이완기이갑기숙알%배양록병완
quaternary ammonium salt%cationic surfactant%synthesis%dodecyl amine%epoxy chloropropane
实验以十二烷基二甲基叔胺和环氧氯丙烷为原料,在酸性条件下合成中间体(2-羟基-3-氯丙基)十二烷基二甲基氯化铵,再与硬脂酰氯反应,生成(2-十八酰氧基-3-氯丙基)十二烷基二甲基氯化铵(HYFA)硬脂酸酯季铵盐阳离子表面活性剂.在反应温度40℃,反应时间3h的条件下,中间体的产率为80.21%;反应温度65℃,反应时间7h,产物的产率为83.57%,krafft点<0℃.通过红外光谱与元素分析确证了产物结构.采用表面张力法和电导法测定了产物的临界胶束浓度cmc分别为8.91×10~(-4)mol/L和8.74×10~(-4)mol/L.
實驗以十二烷基二甲基叔胺和環氧氯丙烷為原料,在痠性條件下閤成中間體(2-羥基-3-氯丙基)十二烷基二甲基氯化銨,再與硬脂酰氯反應,生成(2-十八酰氧基-3-氯丙基)十二烷基二甲基氯化銨(HYFA)硬脂痠酯季銨鹽暘離子錶麵活性劑.在反應溫度40℃,反應時間3h的條件下,中間體的產率為80.21%;反應溫度65℃,反應時間7h,產物的產率為83.57%,krafft點<0℃.通過紅外光譜與元素分析確證瞭產物結構.採用錶麵張力法和電導法測定瞭產物的臨界膠束濃度cmc分彆為8.91×10~(-4)mol/L和8.74×10~(-4)mol/L.
실험이십이완기이갑기숙알화배양록병완위원료,재산성조건하합성중간체(2-간기-3-록병기)십이완기이갑기록화안,재여경지선록반응,생성(2-십팔선양기-3-록병기)십이완기이갑기록화안(HYFA)경지산지계안염양리자표면활성제.재반응온도40℃,반응시간3h적조건하,중간체적산솔위80.21%;반응온도65℃,반응시간7h,산물적산솔위83.57%,krafft점<0℃.통과홍외광보여원소분석학증료산물결구.채용표면장역법화전도법측정료산물적림계효속농도cmc분별위8.91×10~(-4)mol/L화8.74×10~(-4)mol/L.
(2-Octadecyl acyloxy-3-methyl chlorine) dodecyl dimethyl ammonium chloride(HYFA) was synthesized with stearyl chloride and the intermediate prepared with dodecyl amine and epoxy chloro-propane in acidic conditions. At 40 ℃ and reaction time 3 h, the yield of the intermediate was 80. 21%. At 65 ℃ and reaction time 7 h, the yield of HYFA was 83. 57% with Krafft point<0 ℃. The chemical structure of the product was identified by IR spectrum and elemental analysis. The critical micelle concentration of HYFA solution was measured with methods of surface tension and conductivity measurements. They were 8. 91 × 10~(-4) mol/L and 8. 74 × 10~(-4) mol/L, respectively. The results showed that HYFA exhibited higher surface activity.
