聚丙烯酰胺标准品 Polyacrylamide
GPC(GelPermeationChromatography),凝胶渗透色谱,又称为尺寸排阻色谱(SizeExclusionChromatography,简称SEC),它是基于体积排阻的分离机理,通过具有分子筛性质的固定相,用来分离相对分子质量较小的物质,并且还可以分析分子体积不同、具有相同化学性质的高分子化合物。GPC是一种特殊的液相色谱,所用仪器与高效液相色谱仪类似,GPC的分离是利用体积排除机理,装填的是多孔性凝胶或微粒,孔径大小与待分离的聚合物分子相似,体积大的高分子化合物不能进入凝胶孔,最先从凝胶粒间流出,淋出体积(时间)最小,高聚物依分子量从大到小依次淋出。这样,通过做已知分子量的高分子聚合物的标准曲线,就能分析同系未知待测高分子化合物了。上海西宝生物科技有限公司(SEEBIO)是美国聚合物标准品公司(APSC)中国区官方独家代理,产品价格实惠,专业服务周到。主要分为有机凝胶色谱标准品(OrganicGPC/SECStandards)和水性凝胶色谱标准品(AqueousGPC/SECStandards)两类。产品信息:聚丙烯酰胺标准品Polyacrylamide水性凝胶色谱标准品(AqueousGPC/SECStandards)1)非离子型聚丙烯酰胺Non-ionicPolyacrylamide250mg包装Catalog#MpMwMnIV*PAM1100K950,0001,100,000460,8003.495PAM1000K800,000990,000450,0003.169PAM400K320,000401,000189,4001.406PAM200K135,000201,000103,6001.046PAM110K67,200109,60053,2000.988PAM100K93,00099,00050,0000.673PAM80K59,50083,10045,6000.762PAM55K47,20053,60036,7000.463PAM50K43,60053,20035,7000.478PAM40K34,00037,00022,3000.3PAM30K30,00030,60025,3000.295PAM25K25,20027,50021,8000.231PAM19K19,00019,10014,7000.121PAM15K15,00015,50012,8000.167PAM29502,9503,3502,7650.076IV*-IntrinsicViscosity(dL/g)in0.05mSodiumSulfateat30°C(a=0.66;K=0.000373)(2)非离子型聚丙烯酰胺Non-ionicPolyacrylamide500mg包装Catalog#MpMwMnIV*PAAM9000K6,500,0009,000,0004,250,00014.6PAAM7000K6,200,0007,300,0002,100,0005.422PAAM6100K3,900,0006,100,0001,300,0004.583PAAM6000K4,900,0005,352,000535,0004.715PAAM1000K725,0001,140,000465,3003.8PAAM500K331,000524,000209,6002.25PAAM350K193,400367,000141,0001.65PAAM80K50,50079,90044,4000.645PAAM60K46,10058,40036,5000.545PAAM20K17,30021,90013,7000.255PAAM10K7,95011,5307,6000.16PAAM9K6,9008,9805,3000.139PAAM35003,5003,5002,9000.077PAAM3K2,7003,2002,5000.074IV*-IntrinsicViscosity(dL/g)in0.05MSodiumSulfateat30°C(a=0.66;K=0.000373)注解:MnNumberaveragemolecularweightMpPeakaveragemolecularweightMvViscosityaveragemolecularweightMwWeightaveragemolecularweightMzZ-averagemolecularweightIV*IntrinsicViscosity(dl/gm)数均分子量(Number-averagemolecularweight):按聚合物中含有的分子数目统计平均的分子量,高分子样品中所有分子的总重量除以其分子(摩尔)总数。重均分子量(Weight-averagemolecularweight):按照聚合物的重量进行统计平均的分子量,i-聚体的分子量乘以其重量分数的加和。Z均分子量(Z-averagemolecularweight):按照Z值统计平均的分子量粘均分子量(Viscosity-averagemolecularweight):对于一定的聚合物-溶剂体系,其特性粘数[η]不同。Mz>Mw>Mv>Mn,Mv略低于MwMn靠近聚合物中低分子量的部分,即低分子量部分对Mn影响较大Mw靠近聚合物中高分子量的部分,即高分子量部分对Mw影响较大一般用Mw来表征聚合物比Mn更恰当,因为聚合物的性能如强度、熔体粘度更多地依赖于样品中较大的分子。更多相关产品,欢迎咨询:上海西宝生物科技有限公司电话:021-50272975/76/77/78-6221/6512/6236杨露13512172575QQ:1916572322俞婵13817370083QQ:2457655304杨树彦13788987962QQ:1961275959传真:021-50272982E-mail:trade@lifesci9@MSN:lifesci9@Http://地址:上海市张江高科技园区毕升路299弄11#502)
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