摘要
用转糖苷法合成了新型表面活性剂——烷基糖苷。对影响得率的因素如反应物配比、催化剂量、反应时间和温度分别进行了讨论。实验结果用非线性回归的方法得到数学模型,求解非线性规划得到反应的最佳条件:葡萄糖、正丁醇、十二醇、催化剂的摩尔比为1 7 2 0.008,反应温度为120 ,反应时间为1 h。测定了不同浓度下溶液的表面张力,得到其临界胶束质量浓度为0.006%。实验证明,烷基糖苷具有较好的泡沫力和泡沫稳定性。
Alkylpolyglycosides, a new sort of nonionic surfactant, was synthesized by trans-glycosylation. The factors that affect the yield were discussed, which were reactant ratio, catalyst, reaction time and temperature of transglycosylation. The experimental data were dealt with non-linear regression analysis. The optimum conditions were: n(glucose): n(n-butylalcohol): n(n-dodecyl alcohol):n(catalyst) = 1:7:2:0.008, reaction temperature was 120 , reaction time was 1.0 h. By measuring the surface tension of the products with different concentration, the CMC of alkylpolyglycosides solution was obtained, and that was 0.006%(wt%). At last, by measuring other properties of the products prepared under the optimum conditions, it was conformed that alkylpolyglycosides had good ability of forming and foam stability.
出处
《广州化学》
CAS
2004年第2期19-24,共6页
Guangzhou Chemistry
关键词
烷基糖苷
转糖苷法
合成
表面活性剂
反应条件
surfactant
trans-glycosylation
polyglycoside
synthesized
uniform design
