欢迎来到天天文库
浏览记录
ID:52376649
大小:647.25 KB
页数:6页
时间:2020-03-27
《疏水缔合聚丙烯酰胺与双子表面活性剂的相互作用.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、物理化学学报(WuliHuaxueXuebao)MarchActaP.-Chim.Sin.2011,27(3),671-67667l[Article]www.whxb.pku.edu.cn疏水缔合聚丙烯酰胺与双子表面活性剂的相互作用陈洪李二晓叶仲斌韩利娟罗平亚’(西南石油大学油气藏地质及开发工程国家重点实验室,成都610500;西南石油大学化学化工学院,成都610500)摘要:制备了一种脂肪酸酯双磺酸盐型双子表面活性剂,利用粘度法、界面张力法和原子力显微镜研究了疏水缔合聚丙烯酰胺与双子表面活性剂在溶液中的相互作
2、用.实验结果表明:疏水缔合聚内烯酰胺在溶液中能够通过自组装形成疏水微区并发展成网络结构,疏水微区与表面活性剂在溶液中能形成混合胶束:当一定量的表面活性剂加入时,对疏水缔合聚丙烯酰胺的自组装起促进作用,而过多双子表面活性剂的加入又会对聚合物分子的自组装起抑制作用,从而显著影响疏水缔合聚丙烯酰胺的溶液性质,随着表面活性剂浓度的增加,聚合物溶液粘度先增加、再降低:同时,疏水缔合聚丙烯酰胺对双子表面活性剂的界面性能也有较大影响,聚合物的加入使双子表面活性剂降低油,水界面张力的能力降,油/水界面张力达到平衡所需时间延长.
3、关键词:双子表面活性剂:疏水缔合聚丙烯酰胺;界面张力:粘度:原子力显微镜中图分类号:0647InteractionofHydrophobicallyAssociatingPolyacrylamidewithGeminiSUctantCHENHong’_LIEr-XiaoYEZhong—Bin’。HANLi—JuanLUOPing—Ya’(StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,SouthwestPetroleumUniversit
4、y,Chengdu610500,PRChina;SchoolofChemistryandChemicalEngineering,SouthwestPetroleumUniversity,Chengdu610500,PR.China)Abstract:Afattyaciddisulfonateanionicgeminisuctantwaspreparedandthestructureofthesurfactantwascharacterizedby’H-NMR.Hydrophobicallyassociating
5、polyacrylamidewaspreparedaccordingtoaprocedurefr0mIiterature.Theinteractionbetweenthehydrophobicallyassociatingpolyacrylamide(HAPAM)andtheanionicgeminisurfactantwasstudiedbysurface/intefacialtension,apparentviscosity,andatomicforcemicroscopy(AFM).Experimenta
6、lresultsshowthatHAPAMcanformanetworkstructureintheaqueoussolutionbyselfassembly.Mixedmicellesareformedbytheinteractionofgeminisurfactantmicellesandthehydrophobicmicrodomainofthehydr0phObicallyassociatingpolyacrylamideinaqueoussolution.whichplaysaremarkablero
7、leinthesufactantandpolymerassembly.Mixedmicellescanenhancetheinter-orintra.molecularassociationbetweenthepolymermoleculesandthesufactant,whichincreasesthestrengthofthenetworkformedbythehydr0phObicalJyassociatingpolyacrylamide.Theapparentviscosityofthesolutio
8、nincreasedbytheadditionofthegeminiSUrfactant.Whentheadditionofthegeminisurfactantexceededacertainamount,theassociationbetweenthehydrophobicgroupsofthepolymerdecreasedandthenetworkfOrmedbyhydrOph
此文档下载收益归作者所有