简介：Anureaadsorbentwithanaldostructurewasobtainedbytheoxidationofacrosslinkedβ-cyclodextrinpolymer.Thehighestureaadsorptioncapacityreached56.7mg/gin0.05Maqueousphosphatebuffer37℃andpH=7.4,anddecreaseto4.8mg/gininaqueoushumanserumalbumin.Thecompositeadsorbentwaspreparedbytheoxidationofacrosslinkedβ-cyclodextrinanddialyticmembrane.Itwasfoundthatthecompositeadsorbenthasahigherureaadsorptionselectivityandcapacitycomparedtothatoftheoxidationofacrosslinkedβ-cyclodextrinadsorbentwhenureaisinaqueoushumanserumalbumin.

简介：

简介：Photo-oxidativedegradationofpolypropylene/claymultifilamentyarnscontainingdifferentamountsofclaywasinvestigated.Thesesamplesandpurepolypropylene(PP)multifilametnswereexposedtolongwavelengthradiations(λ>300nm)underatmosphericconditionofconstanttemperatureandrelativehumidity.Thephoto-oxidativestabilitywasstudiedusingFTIRspectroscopy,tensiletestingandmicroscopy.TheresultsindicatethattheadditionofclayparticlesdecreasesthestabilityofPP/claycompositestophoto-oxidativedegradationaccordingtocomparisonwithpurePP.FromFTIRstudyandtensileproperties,itwasalsofoundthatthemultifilamentswithhigherclayloadingrevealsafasterlossofmechanicalproperties,higherphoto-oxidativeproductformationandmorereductionintheinductiontimeofphotooxidation.Moreover,thecrackformationonsurfaceofirradiatedfilamentscorrespondswelltotheconclusionsintensilepropertiesandFTIRcharacterization.

简介：

简介：

简介：