论文部分内容阅读
作者研究了多分散聚苯乙烯(PS)试样的浓度效应,并对其谱图同时呈现峰值位移、峰加宽和拖尾效应进行了讨论.以多分散PS和PMMA试样的GPC实验数据验证了我们所提出的多分散试样浓度效应新模型理论。得到了理论与实验符合.从而为用“多分散试样建立绝对单分散标样标定普适标定曲线”提供理论依据.讨论了(dVes/dC)C→0同,A_2和分子量分布多分散性的相关性,并证实了从此关系式得到的第二维利系数(A_2)同光散射法得到的A_2值较吻合.
The authors studied the concentration effect of polydisperse polystyrene (PS) samples and discussed the peak shift, peak broadening and trailing effects simultaneously for their spectra.With GPC experimental data of polydisperse PS and PMMA samples The new model theory of polydisperse sample concentration effect is validated. The theoretical and experimental results are in agreement with each other, so as to provide a theoretical basis for the calibration of “universal monodisperse standard calibration curve of polydisperse sample.” The relationship between (dVes / dC) C → 0, A 2 and polydispersity It is also confirmed that the second Wilcoxon coefficient (A_2) obtained from this relation agrees well with the A_2 value obtained by the light scattering method.