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【英文标准名称】:Gelpermeationchromatography(GPC)-Part1:Tetrahydrofuran(THF)aselutionsolvent
【原文标准名称】:凝胶渗透色谱法(GPC).第1部分:用四氢呋喃(THF)作洗脱溶剂
【标准号】:DIN55672-1-2007
【标准状态】:现行
【国别】:德国
【发布日期】:2007-08
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:器具;粘合剂;校正;化学分析和试验;色谱;色谱法;覆层材料;覆层;定义;含量测定;凝胶渗透色谱法;凝胶;GPC;高效液相色谱法;高效液相色谱分析法;调查;液相色谱法;测量;摩尔质量;涂料;渗透;塑料;高聚物;试样制备;试验设备;测试;四氢呋喃;清漆
【英文主题词】:Apparatus;Bindingagents;Calibration;Chemicalanalysisandtesting;Chromatograms;Chromatography;Coatingmaterials;Coatings;Definitions;Determinationofcontent;Gelpermeationchromatography;Gels;GPC;Highperformanceliquidchromatography;HPLC;Investigations;Liquidchromatography;Measurement;Molarmass;Paints;Permeation;Plastics;Polymers;Specimenpreparation;Testequipment;Testing;Tetrahydrofuran;Varnishes
【摘要】:Thisstandarddescribesthedeterminationofthemolecularweightdistribution,number-averagemolecularweightMnandweight-averagemolecularweight,MwofpolymersthataresolubleinTHF(tetrahydrofuran)bygelpermeationchromatography(GPC).Itispossiblethat,inspiteofthegoodrepeatabilityofthechromatogramsobtained,thismethodcannotbeusedwithcertainpolymertypesbecauseofspecificinteractions(e.g.adsorption)withinthesample/eluent/columnsystem.Themethodisnotanabsoluteoneandrequirescalibrationwithcommerciallyavailableunbranchedpolystyrenestandardsthathavebeencharacterizedbyindependentabsolutemethods.Theresultsforsamplesofpolymersotherthanpolystyrenearethereforeonlycomparablewithingroupsofsamplesofthesametype.TheconditionsspecifiedinthisstandardarenotsuitablefortheGPCanalysisofpolymersampleswithMwvaluesgreaterthan10~6g/mol(seeAnnexC).Nocorrectionmethods(e.g.fortheeliminationofpeakbroadening)areincludedinthisstandard.Ifabsolutemolecularweightvaluesarerequired,anabsolutemethod(e.g.membraneosmometryforMnorlightscatteringforMw)shallbeused.
【中国标准分类号】:G04
【国际标准分类号】:71_040_50
【页数】:27P.;A4
【正文语种】:德语