以p-全氟壬烯氧基苯磺酰氯(PFNPSC)和聚乙二醇(PEG-n)为原料,合成了p-全氟壬烯氧基苯磺酸聚乙二醇酯(PFNPS-PEG-n),用IR和19F NMR对产物结构进行了表征.考察了聚乙二醇平均相对分子质量和反应时间对反应的影响,测定了PFNPS-PEG-n水溶液的表面活性、泡沫性能和乳化性能.结果表明,以PEG-600为原料得到的PFNPS-PEG-n表面活性最高,其较优的合成工艺条件为:四氯化碳为溶剂,三乙胺为缚酸剂,n(PEG-600)∶n(PFNPSC)=1∶1,在40℃下反应6～8h,产物PFNPS-PEG-600临界胶束浓度(CMC)为0.56 g/L,表面张力γCMC可达19.1mN/m;20 mL 1g/L PFNPS-PEG-600水溶液的泡沫体积95 mL,泡沫半衰期75 s.PFNPS-PEG-1000的乳化性能最佳.
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