Designation:D5477−11StandardPracticeforIdentificationofPolymerLayersorInclusionsbyFourierTransformInfraredMicrospectroscopy(FT-IR)1ThisstandardisissuedunderthefixeddesignationD5477;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thispracticedescribesthetechniquesusedfordetectingtwodifferentpolymerentitiesasfollows:1.1.1Abnormalspecksorspotsonasurfaceorinthefilmthatareobjectionableasdefectsand1.1.2Layersofdifferentpolymericsheetscommonlyusedasbarrierfilmsmadebycoextrusion.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.SpecifichazardstatementsaregiveninSection7.NOTE1—ThereisnoknownISOequivalenttothisstandard.2.ReferencedDocuments2.1ASTMStandards:2D883TerminologyRelatingtoPlasticsD1248SpecificationforPolyethylenePlasticsExtrusionMaterialsforWireandCableD1600TerminologyforAbbreviatedTermsRelatingtoPlas-ticsE131TerminologyRelatingtoMolecularSpectroscopyE168PracticesforGeneralTechniquesofInfraredQuanti-tativeAnalysisIEEE/ASTMSI-10StandardforUseoftheInternationalSystemofUnits(SI):TheModernMetricSystem3.Terminology3.1Definitions:3.1.1Fordefinitionsofsomeofthetermsusedinthispractice,refertoTerminologiesD883andD1600.3.1.2Forunits,symbols,andabbreviationsusedinthispractice,refertoTerminologyE131orIEEE/ASTMSI-10.4.SignificanceandUse4.1Aspeckwillultimatelycauseafailuretooccurbyvirtueofitsappearanceinafilmorbythedecreaseinelectricalormechanicalpropertiesinthepolymersubstrate(seeSpecifica-tionD1248).4.2TheanalysisofcompositelayersforbarrierpurposesbymicroscopicFourie...
