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<p>This paper presents the synthesis and characterization of the novel grafted polymer microspheres bearing thiol functionality. The parent porous microspheres are based on glycidyl methacrylate (GMA) crosslinked with 1,4-dimethylbenzene (1,4DMB) and trimethylolpropane trimethacrylate. The synthesis process involved the functionalization of the obtained microspheres with thiol groups, the grafting of the linear polyGMA to their surface and finally attachment of the thiol groups by opening the oxirane ring present in the structure of the linear polyGMA. The chemical structure of the obtained materials was confirmed by FTIR/ATR analysis. Thermal studies under oxidative atmosphere were carried out by thermogravimetric analysis coupled with DSC and FTIR. The proposed method of synthesis allowed to obtain novel microspheres with enhanced thiol content and improved thermal stability compared to the parent ones. The starting materials have a thermal stability of 247 and 253&#xa0;°C, while the finally modified materials have a higher stability of 283–285&#xa0;°C, regardless of the crosslinking agent used.</p>

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Polymeric microspheres grafted with polyGMA chains containing thiol groups—synthesis and thermal characterization

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月8日

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  • Magdalena Maciejewska,
  • Marta Grochowicz

摘要

This paper presents the synthesis and characterization of the novel grafted polymer microspheres bearing thiol functionality. The parent porous microspheres are based on glycidyl methacrylate (GMA) crosslinked with 1,4-dimethylbenzene (1,4DMB) and trimethylolpropane trimethacrylate. The synthesis process involved the functionalization of the obtained microspheres with thiol groups, the grafting of the linear polyGMA to their surface and finally attachment of the thiol groups by opening the oxirane ring present in the structure of the linear polyGMA. The chemical structure of the obtained materials was confirmed by FTIR/ATR analysis. Thermal studies under oxidative atmosphere were carried out by thermogravimetric analysis coupled with DSC and FTIR. The proposed method of synthesis allowed to obtain novel microspheres with enhanced thiol content and improved thermal stability compared to the parent ones. The starting materials have a thermal stability of 247 and 253 °C, while the finally modified materials have a higher stability of 283–285 °C, regardless of the crosslinking agent used.