Insight into the structure of polystyrene-poly(methyl methacrylate) core-shell particles synthesized by seeded suspension polymerization

Autor:	E Mehravar, H Rostami, M. Najafpour, Farhang Abbasi, Kiyumars Jalili
Rok vydání:	2020
Předmět:	Materials science Polymers and Plastics Poly(methyl methacrylate) Core shell chemistry.chemical_compound chemistry Chemical engineering visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Suspension polymerization Polystyrene Methyl methacrylate Suspension (vehicle)
Zdroj:	Polymers and Polymer Composites. 29:1575-1586
ISSN:	1478-2391 0967-3911
Popis:	Core-shell particles were synthesized employing seeded suspension polymerization. Suspension polystyrene (PS) particles were used as seeds, and poly(methyl methacrylate) (PMMA) was synthesized in the presence of polystyrene seeds. A combination of solvent extraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and transmission electron microscopy techniques were employed to study the structure and morphology of synthesized particles. The results suggested a core-inner shell-outer shell structure for the synthesized particles in which the PS core was covered by a PMMA-rich inner shell and a very thin PS-rich outer shell. The size and concentration of PMMA domains decreased from the outer shell toward the core of the particle, and particle morphology was mainly controlled by the limitations to the diffusion of MMA through the polymer particle.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7898b126903576f018460c58939c45db https://doi.org/10.1177/0967391120982768 Zobrazit plný text záznamu