日用化学工业（中英文）2025，Vol.55Issue(6)：709-714,6.DOI:10.3969/j.issn.2097-2806.2025.06.004
含酯基双子季铵盐表面活性剂C12-E2nOm-C12的合成及性能研究
Synthesis and properties of Gemini quaternary ammonium surfactants containing ester groups C12-E2nOm-C12
摘要
Abstract
Three Gemini quaternary ammonium surfactants containing ester groups in spacers,C12-E2nOm-C12(i.e.,C12-E2O2-C12,C12-E4O3-C12 and C12-E6O4-C12),were synthesized via two-step reaction and characterized by IR,1H NMR,13C NMR and HRMS.The effects of spacer length on the self-aggregation,emulsifying,foaming and wetting properties of C12-E2nOm-C12 were investigated.Their corresponding monomer dodecyltrimethylammonium chloride(DTAC)was also investigated for comparison.The results showed that,the critical micelle concentration(cmc)values of C12-E2O2-C12,C12-E4O3-C12 and C12-E6O4-C12 were 0.815,0.152 and 0.044 2 mmol/L,respectively,which were significantly lower than that of DTAC(10.25 mmol/L).Among these three Geminis,it was found that the cmc values of C12-E2nOm-C12 decreased with increasing spacer length.The phase separation time for evaluating the emulsifying abilities of C12-E2O2-C12,C12-E4O3-C12 and C12-E6O4-C12 were 336,492 and 682 s,respectively;the wetting time of C12-E2O2-C12,C12-E4O3-C12 and C12-E6O4-C12 were 79,70 and 64 s,respectively;therefore,C12-E2nOm-C12 exhibited excellent emulsifying and wetting properties compared with DTAC(the phase separation time was 116 s and the wetting time was 87 s).Moreover,C12-E2nOm-C12 also had better foaming ability and foam stability than DTAC.The emulsifying,foaming,foam-stabilizing and wetting abilities of C12-E2nOm-C12 were increased with the increase of spacer length.关键词
酯基/连接基/双子表面活性剂/季铵盐/表面性能/乳化性能Key words
ester/spacer/Gemini surfactant/quaternary ammonium/surface activity/emulsifying property分类
化学工程引用本文复制引用
张扬博,梁亚琴,刘正薇,冀晓宇,赵晓男,高瑞敏..含酯基双子季铵盐表面活性剂C12-E2nOm-C12的合成及性能研究[J].日用化学工业（中英文）,2025,55(6):709-714,6.基金项目
山西省高等学校教学改革创新项目(J20231284) （J20231284）
长治学院大学生创新创业项目(2023DC05) （2023DC05）
