二氢杨梅素印迹聚合物的表面行为

应用前沿分析技术测定了二氢杨梅素印迹聚合物块的实验吸附等温线,并用Langmuir方程、Bi-Langmuir方程和Freundlich方程进行拟合,从最佳拟合求得了印迹聚合物的表面位点分布、吸附常数和饱和吸附量.测定了不同温度和不同流动相组成时分子印迹聚合物固定相的吸附等温线.结果表明：双朗格缪尔模型和福伦登里西模型均能给出较好的拟合效果.当20 ℃、四氢呋喃为流动相时,从Bi-Langmuir方程的最佳拟合参数得到第1类键合位点的键合常数和饱和吸附量分别为0.39 mL·mg^-1和133.23 mg·mL^-1,第2类键合位点的键合常数和饱和吸附量分别是135.07 mL·mg^-1和0.071 mg·mL^-1.

Investigation on the Surface Behavior of Dihydromyricetin Imprinted Polymer Monolith

Determination of adsorption isotherm of dihydromyricetin imprinted polymer monolith was carried out by frontal analysis technique.Langmuir,Bi-Langmuir and Freundlich equations were used for the fit of these isotherms in order to obtain the site distribution,binding constants and saturation capacities of the polymer monolith at different temperatures and under different mobile phase make-up,respectively.The results indicated that the fittings of the data to Bi-Langmuir and Freundlich model were both good.From the best fitting of Bi-Langmuir equation,it was obtained that the binding constants and saturation capacities at 20 ℃ using tetrahydrofuran as mobile phase were 0.39 mL/mg and 133.23 mg/mL for the first site class and 135.07 mL/mg and 0.071 mg/mL for the second site class,respectively.