GPC法测定苯丙树脂相对分子质量及其分布

Determination of molecular weight and its distribution of styrene butyl acrylate copolymer by GPC

建立了GPC凝胶渗透色谱法测定苯丙树脂相对分子质量及其分布的方法：采用Styragel Wat 044207（500~30 000）（THF）,Wat 044210（5 000~600 000）（THF）及Wat044213（5 000~4 000 000）（THF）3根凝胶色谱柱串接,柱温35℃;四氢呋喃为流动相,流速1 mL/min;采用示差折光检测器,待测样品浓度0.03 g/mL,精密度和重现性实验结果表明：该方法数据可靠、重复性好、简单易行。

The determination method of molecular weight and its distribution of styrene butyl acrylate copolymer by GPC was established as followed： StyragelWat 044207（500~30 000（THF,Wat 044210（5 000~600 000（THFand Wat044213（5 000~4 000 000（THFthree gel columns connecting in series;column temperature： 35 ℃;mobile phase THF,flow rate：1mL/min;refractive index detector,sample concentration 0.03 g/mL.The precision and repeatability experiment results showed that the method had the advantanges such as reliable data,good reproduciblility,simple and feasible.