摘要
报道一种同时订定高分子凝胶渗透色谱(GPC)校准参数和Mark常数K、α的新方法。待测高分子经粗分级,测得其特性粘数[η]_1和GPC谱图G_1,另取一种已知K_0、α_0值的参考高分子,也经粗分级后测得[η]_(0,1)和G_(0,1),根据普适校准关系,结合Mark方程和由Wesslan分布函数所导出的粘均分子量计算公式,得到联立方程组。通过求解该方程组同时订定了高分子的GPC校准参数和K、α常数。
A new method, by which GPC calibration parameters and Mark constants K, a of a given polymer may be estimated simultaneously, is reported. The fractions of a given polymer are obtained by preliminary fractionation and their intrinsic viscosities [η]1 and GPC chromatograms G1 are measured. Another polymer whose K0,a0 are known is chosen as the reference sample, and its [η]0.1 and G0.1 of each fraction are measured by the same way afore mentioned. Finally, by solving a simultaneous algebraic equation derived from universal calibration and Mark equation and Wesslan distribution function, both GPC calibration parameters and Mark constants of the given polymer are estimated.
出处
《色谱》
CAS
CSCD
北大核心
1993年第1期10-12,共3页
Chinese Journal of Chromatography
