The core/shell type structure of the highly crosslinked poly(glycidylmetharylate-co-divinylbenzene) microspheres prepared in the precipitation polymerization in acetonitrile was thoroughly verified by means of swelling,¹H NMR, XPS, TEM and TGA measurements. In the XPS measurement, the higher the GMA content, the higher the oxygen content was observed, implying that the higher content of GMA is observed in the particle surface. The further verification of the core/shell structure of the poly(GMA-co-DVB) particles was carried out using¹H NMR and TEM techniques, resulting in the poly(GMA-co-DVB) particles with the GMA rich-phase and DVB richphase. In overall, the poly(GMA-co-DVB) microspheres consist of a highly crosslinked DVB rich-phase in the core and slightly or non-crosslinked GMA rich-phase in the shell part due to the different reaction ratios between two monomers and self-crosslinking density of DVB.

中文翻译：

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聚甲基丙烯酸缩水甘油酯-co-二乙烯基苯微球核/壳结构的验证

通过溶胀，¹ H NMR，XPS，TEM和TGA测量，彻底验证了在乙腈中沉淀聚合制得的高度交联的聚（缩水甘油基甲基丙烯酸甲酯-共二乙烯基苯）微球的核/壳型结构。在XPS测量中，GMA含量越高，观察到的氧含量越高，这意味着在颗粒表面观察到更高的GMA含量。聚（GMA- co- DVB）颗粒的核/壳结构的进一步验证使用¹ H NMR和TEM技术进行，得到的聚（GMA- co- DVB）颗粒具有GMA富相和DVB富相位。总体而言，poly（GMA- co-DVB）微球由核中的高度交联的DVB富相和壳部分中的轻度或非交联的GMA富相组成，这是由于两种单体之间的反应比和DVB的自交联密度不同所致。