摘要
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6～8 h,产物PFNPS-PEG-600临界胶束浓度(CMC)为0.56 g/L,表面张力γCMC可达19.1 mN/m;20 mL 1 g/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。
Polyethylene glycol p-perfluorous nonenyloxyphenyl sulflonates （PFNPS-PEG-n） were synthesized from p-perfluorous nonenyloxyphenylsulfonyl chloride （ PFNPSC ） and polyethylene glycol （PEG-n）, and were characterized by IR and 19F NMR, respectively. The effects of average relative molecular mass of PEG-n and reaction time on alcoholysis were investigated. The performances of these surfactants such as surface tensions, foaming characterisitics and emulsifiabilities were studied. The surface activity of PFNPS-PEG-n synthesized from PEG-600 is the best, and the optimal reaction conditions are n（PFNPSC） ：n（PEG-600） = 1：1, reacts at 40°C for 6 - 8 h in CC14 in the present of NEt3. The critical micelle concentration（CMC） of PFNPS-PEG-600 is 0. 56 g/L, and its Ycmc is 19. 1 mN/m; 20 mL 1 g/L PFNPS-PEG-600 will produce 95 mL foam, and its half-life time is 75 s. Emulsifiability of PFNPS-PEG-1000 is the best among PFNPS-PEG-n.
出处
《应用化学》
CAS
CSCD
北大核心
2012年第8期906-909,共4页
Chinese Journal of Applied Chemistry
基金
浙江省科技厅创新团队资助项目(2011R09002-10)
关键词
氟碳表面活性剂
表面张力
泡沫性能
乳化性能
fluorocarbon surfactant, surface tensions, foaming characterisitics, emulsifiability
