UMR 6264 CNRS-Universities of Aix-Marseilles I, II and III, Laboratoire Chimie Provence, 13397 Marseilles Cedex 20, France.
J Chromatogr A. 2009 Nov 20;1216(47):8386-90. doi: 10.1016/j.chroma.2009.09.065. Epub 2009 Oct 2.
We propose a fast, reliable chromatographic method to determine the grafting yield of a Polybutadiene-graft-Polystyrene (PB-g-PS) copolymer synthesized in our laboratory for High Impact Polystyrene applications. We used Liquid Chromatography at Critical Conditions of PS to separate non-grafted PS from graft product and ungrafted PB. Separation between grafted copolymer and non-grafted PS was very efficient and thanks to linearity of UV-detector response, we could quantify the amount of grafted PS in the copolymer, as well as calculate the grafting yield. Results shown here are for DOW BR1202D high-cis PB and BASF CB529T low-cis PB, Luperox TBIC M75 initiator at 8 x 10(-4) mol L(-1) and 125 degrees C reaction temperature.
我们提出了一种快速、可靠的色谱方法来测定我们实验室合成的用于高抗冲聚苯乙烯应用的聚丁二烯接枝聚苯乙烯（PB-g-PS）共聚物的接枝率。我们使用 PS 的临界条件下的液相色谱法将非接枝 PS 与接枝产物和未接枝 PB 分离。接枝共聚物与非接枝 PS 之间的分离非常有效，并且由于 UV 检测器响应的线性，我们可以定量测定共聚物中接枝 PS 的量，以及计算接枝率。这里给出的结果是针对 DOW BR1202D 高顺式 PB 和 BASF CB529T 低顺式 PB、Luperox TBIC M75 引发剂在 8 x 10(-4) mol L(-1)和 125 摄氏度的反应温度下的结果。
