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吸附性高分子溶液界面行为的平均场研究.docx

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吸附性高分子溶液界面行为的平均场研究 摘要 吸附性高分子（ADS）是一类具有广泛应用前景的功能性材料。ADS的溶液界面行为对于其应用性能具有重要影响。本文从平均场的角度出发，研究了ADS溶液界面行为，并讨论了其机理。研究表明，ADS可以在溶液表面形成吸附层，影响溶液表面张力和流变性质，并随着ADS浓度和分子量的变化而发生改变。本文的研究有助于深入理解ADS的溶液界面行为，为ADS的应用提供一定的理论和实验基础。 Abstract Adsorptivehighpolymers(ADs)arefunctionalmaterialswithbroadapplicationprospects.TheinterfacialbehaviorofADsinsolutionhasanimportantinfluenceontheirapplicationperformance.Fromtheperspectiveofmeanfieldtheory,thispaperstudiestheinterfacialbehaviorofADsinsolutionanddiscussesitsmechanism.ThestudyshowsthatADscanformanadsorptionlayeratthesolutionsurface,affectingthesurfacetensionandrheologicalpropertiesofthesolution,whichchangewiththeconcentrationandmolecularweightofADs.TheresearchinthispaperhelpsusgainadeeperunderstandingoftheinterfacialbehaviorofADsinsolutionandprovidesatheoreticalandexperimentalbasisfortheirapplication. Introduction Adsorptivehighpolymers(ADs)areaclassoffunctionalmaterialswithuniqueproperties,suchasexcellentadsorptioncapacity,selectiverecognition,andgoodbiocompatibility.ADshavebeenwidelyusedinvariousfields,suchaswastewatertreatment,drugdelivery,andbiosensors.Inmanyapplications,ADsareusedinsolution,andtheirinterfacialbehaviorinsolutionisofcrucialimportancefortheirperformance. Theinterfacialbehaviorofpolymersinsolutionhasbeenextensivelystudiedovertheyears,andvarioustheorieshavebeenproposedtoexplaintheirbehavior.Themeanfieldtheoryisausefultooltoinvestigatetheinterfacialbehaviorofpolymersinsolution,whichdescribestheaverageinteractionbetweenpolymerchainsandsolventmolecules. Inthispaper,weapplythemeanfieldtheorytostudytheinterfacialbehaviorofADsinsolution,focusingontheiradsorptionlayerformationatthesolutionsurfaceanditsinfluenceonthesolutionproperties. Experimental ToinvestigatetheinterfacialbehaviorofADsinsolution,wefirstpreparedifferentconcentrationsofADSsolutionsandmeasuretheirsurfacetensionsusingaringtensiometer.WethenusearheometertomeasuretherheologicalpropertiesofADSsolutionswithdifferentconcentrationsandmolecularweights. ResultsandDiscussio