アルキルフェノール-ホルムアルデヒド縮合物系高分子非イオン界面活性剤の研究-2-

概要

論文の詳細を見る
As previously reported, properties of polymeric surfactants derived from nonylphenol-formaldehyde condensates in aqueous solution differed in many respects from those of monomeric ones.<BR>To ascertain these differences which might come from the colloidal states of solutions, the determination of CMC was carried out by the method which S. Ross and co-workers developed for nonionic surfactants.<BR>While the aqueous solution of ethoxylated nonylphenol showed a break in the concentration-absorbance curve and the CMC determined fairly agreed with values shown in the literature which were measured by other procedures, polymeric surfactants did not show any such point.<BR>From these results, it was suggested that polymeric surfactants would not take regular configurations like ordinary monomeric ones in aqueous solution and that each molecule of the former corresponds to the micelle of the latter in dilute solution. And even the product of which mean molecular weight was roughly equal to the dimer showed such features.<BR>On this basis, the said characteristic properties of polymeric surfactants could be interpreted.
日本油化学会の論文