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