Designation:D5477−18StandardPracticeforIdentificationofPolymerLayersorInclusionsbyFourierTransformInfraredMicrospectroscopy(FT-IR)1ThisstandardisissuedunderthefixeddesignationD5477;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticedescribesthetechniquesusedfordetectingtwodifferentpolymerentitiessuchas:1.1.1Abnormalspecksorspotsonasurfaceorinthefilmthatareobjectionableasdefectsand1.1.2Layersofdifferentpolymericsheetscommonlyusedasbarrierfilmsmadebycoextrusion.1.2Thispracticeutilizesthrough-transmittanceopticalandinfraredtechniques.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafety,health,andenvironmentalpracticesanddeter-minetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardstatementsaregiveninSection7.NOTE1—ThereisnoknownISOequivalenttothisstandard.1.5Thisinternationalstandardwasdevelopedinaccor-dancewithinternationallyrecognizedprinciplesonstandard-izationestablishedintheDecisiononPrinciplesfortheDevelopmentofInternationalStandards,GuidesandRecom-mendationsissuedbytheWorldTradeOrganizationTechnicalBarrierstoTrade(TBT)Committee.2.ReferencedDocuments2.1ASTMStandards:2D883TerminologyRelatingtoPlasticsD1248SpecificationforPolyethylenePlasticsExtrusionMaterialsforWireandCableD1600TerminologyforAbbreviatedTermsRelatingtoPlas-ticsE131TerminologyRelatingtoMolecularSpectroscopyE168PracticesforGeneralTechniquesofInfraredQuanti-tativeAnalysisE2015GuideforPreparationofPlasticsandPolymericSpecimensforMicrostructuralExaminationIEEE/ASTMSI-10StandardforUseoftheInternationalSystemofUnits(SI):TheModernMetricSystem3.Terminology...
