Study On Hydrophile-lipophile Balance Theory In Emulsion Systems Of Rosin And Its Derivatives

In this paper, the R-ratio theory used in microemulsion was firstly introduced toemulsion system of natural rosin and its derivatives. The estimated model of R-ratio valuefor the system was established, and the values were used as a principle to choose theemulsifying agents for the rosin system. These results added much to thehydrophile-lipophile balance theory of the system; Secondly, the estimated model and theprinciple were applied to the emulsion system of rosin and its derivatives/low moleculesurfactants. The results showed that the R-ratio theory and the principle were suitable forthe emulsion system. Thirdly, the R-ratio theory was further applied to the emulsionsystem of rosin and its derivatives/mixtures of polymeric and low molecular surfactants.the relationships between R-ratio values and synergism of the mixtures was analyzed, anda new standard was set to decide whether the synergism occurs in the mixtures. Finally,the R-ratio values of polymeric surfactants consisted of different molar ratio of styrene,acrylic ester, acrylic acid and acrylamide were calculated. The relationship between themolar ratios of the monomers of the polymeric surfactants and the numbers of effectiveemulsion was studied, and the proper molar ratios of the monomers were obtained tosynthesize the polymeric surfactants with high efficiency to emulsify rosin and itsderivatives. The results provide a new model for molecular designs of polymericsurfactants, and also provide theory basis for study of new rosin emulsions used inpapermaking.