Investigation of the Hydration of Nonfou领 Material Poly（ethylene glycol） by Low-Field Nuclear Mag

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2018-08-16 10:00 1637阅读次数

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• Investigation of the Hydration of Nonfou领 Material Poly（ethylene glycol） by Low-Field Nuclear Mag

  Thestrongsurfacehydrationlayerofnonfou领materialsplaysakeyroleintheirresistancetononspecificproteinadsorption.Poly（ethyleneglycol）（PEG）isaneffectiveexampleofmaterialsthatcanresistnonspecificproteinadsorptionandcelladhesion.Thus,thestronginteractionbetweenwatermoleculesandPEGwasinvestigatedthrougheachT2componentinwater/PEGmixturesusingmultiexponentialinversionofT2relaxationtimemeasuredbytheCarrPurcellMeiboomGill（CPMG）sequenceoflow-fieldnuclearmagneticresonance（LF-NMR）.Resultsshowthataboutonewatermoleculeistightlyboundwithoneethyleneglycol（EG）unit,andadditionalwatermoleculesover1:1ratiomainlyswellthePEGmatrixandarenottightlyboundwithPEG.Thisresultwasalsosupportedbytheendothermicbehaviorofwater/PEGmixturesmeasuredbydifferentialscanningcalorimetry（DSC）.Itisbelievedthatthemethoddevelopedcouldbealsoappliedtoinvestigatevariousinteractionsbetweenmacromoleculesandothersmallmoleculeswithoutusingdeuteriumsamples,whichmightopenanovelroutetoquantitativelymeasureguesthostinteractionsinthefuture.[详细]

  2018-08-16 10:00

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