马来松香聚乙二醇酯表面活性剂的制备及性能分析OACSTPCD

In order to solve the problems of high dependence on petroleum and poor environmental friendliness of agricultural emulsifiers,rosin,a renewable resource,was utilized as the raw material to synthesize maleic rosin through isomerization and Diels-Alder addition reactions.Subsequently,maleic rosin was reacted with polyethylene glycol 600 to synthesize a malay rosin polyethylene glycol ester surfactant(SM600).The struc-tural characterization of the product was performed using Fourier-transform infrared spectroscopy(FT-IR)and gel permeation chromatography(GPC).Additionally,the appearance color,acid value,pH value of the aque-ous solution,viscosity,cloud point and degree of polymerization(DP)were measured.Furthermore,surface tension(γ),critical micelle mass fraction(wCMC),foam performance(FP),emulsification performance(EP),and hydrophilic-lipophilic balance(HLB)were studied to evaluate the surface activity performance.The re-sults indicate that SM600 appears as a reddish-brown liquid at room temperature,exhibiting characteristics such as low acid value,low viscosity and high cloud point.Its aqueous solution is neutral with a polymerization degree of 1.81.The surface tension and critical micelle mass fraction are 36.139 mN·m-1 and 0.063％,re-spectively,demonstrating excellent foam performance,emulsification performance and hydrophilicity.The raw materials are naturally renewable,the synthesis process is simple,and the product exhibits excellent perform-ance,making it a potential substitute for alkylphenol polyoxyethylene ether emulsifiers.