【摘要】 在GPC浓度效应的模型理论基础上,提出了用多分散试样标定普适标定曲线方程的新方法。采用数理分析方法,经过多重数学转换,把多分散试样的分子参数转变成单分散标样的有效流体力学体积的直接解析函数,得到了用多分散试样来建立单分散标样的普适标定曲线方程式,并按该方程式分析和处理了多分散PS,PDCMA和PTDMA试样数据,所得到的普适标定曲线方程与单分散标样的普适标定曲线方程一致,经过浓度效应修正后,两者重合。更多还原

【Abstract】 A new method for calibration of universal calibration curves with polydispersed polymers is presented. It is based on a new model theory of concentration effects in GPC for polydispersed polymers. A general correlation between the peak hydrodynamic volumes and the elution volumes for polydispersod polymers was established. The chromatogram of PS, PDCMA and PTDMA with different molecular weight and it’s distribution in THF solvent were studied. These experimental data were treated with the general relation. The universal calibration curves for mono and polydispersed polymers were constructed by the proposed method. It is found that the two universal calibration curves with mono-and polydispersed polymers are in an excellent agreement.更多还原