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1、石油學(xué)報(石油加工)2010年8月ACTAPETROLEISINICA(PETROLEUMPROCESSINGSECT10N)第26卷第4期文章編號:1001—8719(2010)04—0628—07一種驅(qū)油用疏水締合聚丙烯酰胺的乳化性能張紅艷,康萬利,孟令偉,王永建,郭黎明(1.中國石油大學(xué)石油工程學(xué)院,山東青島266555;2.大慶石油學(xué)院化學(xué)化工學(xué)院黑龍江大慶163318)摘要:研究了含疏水締合聚丙烯酰胺(HAP)的o/w型乳狀液的析水率和粒度分布,探討了聚合物溶液/油體積比(V(HAPsolution)/v(oil))對乳狀液穩(wěn)定性的影響。
2、采用掃描電鏡和動態(tài)光散射儀分析了HAP溶液的形態(tài)。結(jié)合HAP對油一水界面張力、乳狀液黏度以及增溶性影響的研究,探討了HAP的乳化性能。結(jié)果表明,o/w乳狀液中HAP的質(zhì)量濃度越高,乳狀液越穩(wěn)定。當(dāng)HAP質(zhì)量濃度在1000mg/L以下時,HAP能吸附在油一水界面上,降低油一水界面張力,體系中存在的單分子膠束對油具有一定的增溶效果,內(nèi)部形成的空間網(wǎng)狀結(jié)構(gòu)對油滴的聚并產(chǎn)生空間位阻,使得乳狀液穩(wěn)定。當(dāng)HAP質(zhì)量濃度在1000mg/L以上時,HAP在油一水界面形成緊密排列,油一水界面張力達(dá)到最低值,同時體系內(nèi)部形成超分子的空間網(wǎng)絡(luò)結(jié)構(gòu),產(chǎn)生更強(qiáng)的空間位阻;超
3、分子的空間網(wǎng)絡(luò)中形成的許多非極性腔體空間對油具有強(qiáng)的增溶能力,乳狀液就更加穩(wěn)定。關(guān)鍵詞:疏水締合聚丙烯酰胺;乳狀液;界面張力;增溶性;膠束;黏度中圖分類號:TE357.46文獻(xiàn)標(biāo)識碼:Adoi:10.3969/j.issn.1001-8719.2010.04.025EMULSIONCHARACTERISTICSOFTHEHYDRoPHoBICALLYASSoCIATINGPoLYACRYLAMlDUSEDFORoILFLooDINGZHANGHongyan~,KANGWanli,MENGLingwei,WANGYongjian,GUOLiming(
4、1.SchoolofPetroleumEngineering,ChinaUniversityofPetroleum,Qingdao266555,China2.SchoolofChemistryandChemicalEngineering,DaqingPetroleumInstitute,Daqing163318,China)Abstract:Thewaterseparationrateandtheparticlesizedistributionoftheo/Wemulsioncontaininghydrophobicallyassociatingp
5、olyacrylamid(HAP)weredetermined,andtheeffectsofpolymersolutiontooilratio(V(HAPsolution)/v(Oil))ontheemulsionstabilitywerestudied.ThemicrostructureofHAPsolutionwasinvestigatedbySEManddynamiclightscatteringmethods.AccordingtotheeffectsofHAPontheoil—waterinterfacia1tension.viscos
6、ityofemulsionandsolubilizationofoil,theemulsificationcharacteristicsofHAPwerediscussed.TheresultsindicatedthatthehigherthemassconcentrationofHAPinO/Wemulsion.themorestabletheemulsionwas.WhentheHAPmassconcentrationwaslessthan1000mg/L。theoil—waterinterfacialtensioninemulsioncoul
7、dbereducedandthespacenetworkstructureresultinginspatialsterichindranceformed,whichmadetheO/Wemulsionstable.WhiletheHAPmassconcentrationwasmorethan1000mg/L,thewater—oilinterfacetensioninemulsioncouldbereducedtoaminimumvalueandthesupermolecularnetworkstructureinthesystemresultin
8、ginthestrongerspatialsterichindranceformed,whichmadetheO/Wemu