A novel method for the synthesis of polystyrene- graft-silica particles using random copolymers based on styrene and triethoxyvinylsilane

[Display omitted] ► Silica particles were grafted with poly(styrene- co-triethoxyvinylsilane). ► PS- g-silica particles presents high dispersability in organic solvents. ► We investigated the effect of the copolymers weight on the grafting density. In the present research, random copolymers based on...

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Bibliographic Details
Published in:Applied surface science 2011-08, Vol.257 (20), p.8581-8586
Main Authors: Agudelo, Natalia A., Perez, Leon D., Lopez, Betty L.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Conversion
Copolymers
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Feeding
Hybrid materials
Infrared and raman spectra and scattering
Infrared spectroscopy
Materials science
Materials testing
Monomers
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Organic compounds, polymers
Physics
Polystyrene resins
Polystyrene-grafted silica particles
Random copolymers
Silica
Styrenes
Synthesis
Thermal analysis, differential thermal analysis (DTA), differential thermogravimetric analysis
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Summary:[Display omitted] ► Silica particles were grafted with poly(styrene- co-triethoxyvinylsilane). ► PS- g-silica particles presents high dispersability in organic solvents. ► We investigated the effect of the copolymers weight on the grafting density. In the present research, random copolymers based on triethoxyvinylsilane (TEVS) and styrene (St) are synthesized and structurally characterized. According to the reactivity ratios of the monomers determined by infrared analysis; St tends to form blocks whilst TEVS is expected to be incorporated as isolated units. A sample of poly(styrene- co-triethoxyvinylsilane) synthesized at low conversion using a monomer feeding ratio St:TEVS of 2:3 was used as macrosilane in the synthesis of polystyrene- g-silica particles. The grafting reaction was confirmed by infrared spectroscopy, thermogravimetric analysis and by the evaluation of the morphological characteristics of the hybrid particles.
ISSN:0169-4332
1873-5584
DOI:10.1016/j.apsusc.2011.05.021