Effect of Air Plasma Processing on the Adsorption Behaviour of Bovine Serum Albumin on Spin-Coated PMMA Surfaces-中国期刊网

摘要 ThispaperreportstheadsorptionofBovineSerumAlbumin(BSA)ontoDielectricBarrierDischarge(DBD)processedPoly(methylmethacrylate)(PMMA)surfacesbyaQuartzCrystalMicrobalancewithDissipationmonitoring(QCM-D)tech-nique.ThepurposeistostudytheinfluenceofDBDprocessingonthenatureandscaleofBSAadsorptiononPMMAsurfaceinvitro.ItwasobservedthatDBDprocessingimprovesthesurfacewettabilityofPMMAfilm,afactattributabletothechangesinsurfacechemistryandtopography.ExposureofthePMMAtoPhosphateBuffedSaline(PBS)solutionintheQCM-Dsystemresultedinsurfaceadsorptionwhichreachesanequilibriumafterabout30minutesforpristinePMMA,and90minutesforprocessedPMMAsurface.SubsequentinjectionofBSAinPBSindicatedthattheproteinisimmediatelyadsorbedontothePMMAsurface.ItwasrevealedthatadsorptionbehaviourofBSAonpristinePMMAdiffersfromthatonprocessedPMMAsurface.AsloweradsorptionkineticswasobservedforpristinePMMAsurface,whilstaquickadsorptionkineticsforprocessedPMMA.Moreover,thedissipationshiftofproteinadsorptionsuggestedthatBSAformsamorerigidstructureonpristinePMMAsurfacethatonprocessedsurface.ThesedatasuggestthatchangesinwettabilityandattendantchemicalpropertiesandsurfacetextureofthePMMAsurfacemayplayasignificantroleinBSAadsorptionprocess.

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Effect of Air Plasma Processing on the Adsorption Behaviour of Bovine Serum Albumin on Spin-Coated PMMA Surfaces

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Effect of Air Plasma Processing on the Adsorption Behaviour of Bovine Serum Albumin on Spin-Coated PMMA Surfaces

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