Epoxy Functional Porous POSS Microparticle Synthesis

Year 2022, Volume: 50 Issue: 4, 359 - 366, 09.10.2022

Güneş Kibar

https://doi.org/10.15671/hjbc.879777

Cited By: 2

Abstract

Epoxy-functional porous polyhedral oligomeric silsesquioxane (POSS) microparticles were synthesized by templated polymerization in two-steps by using monodisperse 2µm poly(GMA) seed latex particles as a template. In the first step, templated polymer latex was swollen in emulsion medium to obtain micron size porous POSS particles. In the second step, the hydrophobic monomers metharcyl-POSS, epoxy-functional monomer glycidyl methacrylate (GMA), the crosslinking agent GDMA and the thermal imitator diffused into the swollen template in emulsion medium for free-radical polymerization. The resultant poly(POSS-co-GDMA-co-GMA) microparticles were obtained in polydisperse form due to the high molecular weight of the silica cage core of POSS created difficulty in the diffusion step. However; monodisperse composite microparticles were obtained around 5.8 ± 0.4µm in size via centrifugal post-separation. The spherical fine porous hybrid structure was fully characterized as morphological, thermal, chemical composition, and crystalline form by SEM, TGA, FTIR, and XRD respectively.

Keywords

polyhedral oligomeric silsesquioxane (POSS), free radical polymerization, epoxy functional, porous structure, glycidyl methacrylate (GMA), monodisperse

Supporting Institution

Adana Alparslan Turkes Science and Technology University

Project Number

18103011

Thanks

Financial support from the Adana Alparslan Turkes Science and Technology University Scientific Research Project (Grant No. 18103011) is greatly appreciated. Special thanks to Bilkent-UNAM facilities for the use of characterization tools.

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