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本文用GPC-[η]联用仪测定高聚物分子的无扰尺寸,GPC将高聚物分成不同的级分,连用自动粘度计测其相应级分的粘度,并由GPC的标定线或普适标定线,得到各级分的分子量,再用使Mark-Houwink公式线性化的理论方程,图解外推到无扰状态,获得高聚物分子的无扰尺寸,对于聚苯乙烯和聚甲基丙烯酸甲酯,所得结果与直接法、习惯法一致。
In this paper, GPC- [η] combined with the determination of polymer molecules without interference size, GPC polymer will be divided into different fractions, even with the automatic viscometer to measure the viscosity of the corresponding fractions, and by the GPC calibration line or Ubiquitous calibration line to get the molecular weight of each fraction, and then make the Mark-Houwink formula linearized theoretical equation, the graph extrapolated to the interference state, to obtain the polymer molecules without interference size, for polystyrene and polymethyl Methyl acrylate, the results obtained with the direct method, common law.