Synthesis And Evaluation Of Dodecyl Polyglucoside Surfactant

Dodecyl polyglucoside (APG-12) surfactants having excellent surface interface andemulsifying properties,is a green and pollution-free surfactant, and its future developmentprospects is more extensive.Through a lot of research and reading literature, the paper studiedthe synthesis and performance evaluation of APG-12, and did a detailed analysis with itsemulsifying properties.In the study, use the direct glycosidation method (one-step) to synthesize APG-12.Through the optimization of synthesis conditions and the analysis of the effect condition,make sure the optimal reaction conditions for the synthesis of APG-12: the ratio of Alcoholand glucose molar is7:1; system reaction temperature is115℃; the optimum molar ratio anddosage of binary catalyst ptoluenesulfonic acid and phosphoric acid are respectively3,1.3%,pressure control in3~4kPa; the reaction time is2.5-3.0h.Use IR spectroscopy analysis theproduct of the alkyl glycoside synthesis infrared spectroscopy, and confirm the desiredproduct composition isAPG-12.Measure and evaluate the products of CMC, the surface and interfacial tension,biodegradability and toxicity of emulsifying properties,and prove that the APG-12propertiesis more excellent than the ordinary LAS and OP-10surfactant. Interfacial tension valuereaches10-3magnitude; elevated temperature and NaCl added can reduce the surface tensionand the CMC the APG-12. APG-12final degradation is up to94%,the skin irritation index is0.3(no stimulation), whose performance is better than green and OP-10and LAS.When theAPG-12concentrations is bigger than1.5g/L; emulsifying properties are stable.and make adetailed analysis from microscopic aspects of the emulsion.In the applications of pipelineanalysis, the heavy oil can reduce the flow resistance of the process by APG-12, and themobile phase can form a O/W emulsion.