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

Agudelo, Natalia A.; Pérez, Luisa Armas; López, Betty L.

doi:10.1016/j.apsusc.2011.05.021

Cited by 23 publications

(18 citation statements)

References 23 publications

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“…Perez et al reported the synthesis and characterization of random copolymers based on poly(styrene-co-triethoxyvinylsilane) and their application as macro-silanes for grafting silica particles with PS chains in a single step reaction. It was found that the grafting density depends on the molecular weight of the copolymers [22] .…”

Section: Introductionmentioning

confidence: 99%

Polymer-clay nanocomposites: chemical grafting of polystyrene onto Cloisite 20A

et al. 2012

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An account of the experiments on preparing polystyrene (PS) nanocomposites through grafting the polymer onto organophilic montmorillonite is reported. Cloisite 20A was reacted with vinyltrichlorosilane to replace the edge hydroxyl groups of the clay with a vinyl moiety. Because the reaction may liberate HCl, it was performed in the presence of sodium hydrogencarbonate to prevent the exchange of quaternary alkylammonium cations with H + ions. Only the silanol groups on the edge of the clay react with vinyltrichlorosilane. The radical polymerization of the product with styrene as a vinyl monomer leads to chemical grafting of PS onto the montmorillonite surface. The homopolymer formed during polymerization was separated from the grafted organoclay by Soxhlet extraction. Chemical grafting of the polymer onto Cloisite 20A was confirmed by infrared spectroscopy. The prepared nanocomposite materials and the grafted nano-particles were studied by XRD. Exfoliated nanocomposites may be obtained for 0.5 wt%−1 wt% clay content. The nanocomposites were studied by thermogravimertic analysis (TGA) dynamic thermal analysis (DTA) and dynamic mechanical analysis (DMTA).

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Section: Introductionmentioning

confidence: 99%

Polymer-clay nanocomposites: chemical grafting of polystyrene onto Cloisite 20A

et al. 2012

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“…Considering that VTES promotes chain transference to the monomer, and its relative reactivity ratios is two magnitude orders smaller than the corresponding value for styrene 13 , it can be concluded that the copolymers are mainly composed by styrene, and contain one VTES unit mostly found at the end of each chain.…”

Section: Synthesis and Characterization Of Polydimethylsiloxane End-mmentioning

confidence: 99%

“…Afterwards, PS-(PDMS) 3 is obtained by reaction of the macrosilane precursor with dimethyldimethoxysilane (DMDMS) through the hydrolysis, and co-condensation of alkoxy silane groups. In previous studies, we found that poly(St -co -VTES)´s can be used as a reactive macrosilanes for the modification of silica surfaces 13 and as precursors for the synthesis of PS/silica nanocomposites 14 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Polydimethylsiloxane end-Modified Polystyrene from Poly(Styrene – co –Vinyltriethoxysilane) Copolymers

Agudelo

Pérez

2016

Mat. Res.

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“…Their development is very rapid because they can offer new or significantly better properties of the obtained materials (Agudelo et al 2011;Liu et al 2003). The ability to use different methods of synthesis of hybrid materials in the reactions of organic and inorganic reactive monomers makes it possible to directly regulate the properties of the obtained materials (Lebedev 2010).…”

Section: Introductionmentioning

confidence: 99%

“…As a result of polymerization reaction of vinyl groups, silica is chemically built into the structure of the resulting polymer (Donescu et al 2007(Donescu et al , 2013Agudelo et al 2011). Gatica et al (2003) used vinylsilane monomers (vinyltrimethoxysilane and vinyltriethoxysilane) in a copolymerization reaction with other vinyl monomers: methyl methacrylate (MMA), tert-butyl acrylate (tBA) and N-vinyl-2-pyrrolidone (VP) in order to obtain functionalized vinyl copolymers.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of organic–inorganic hybrid microspheres

Podkościelna

Sobiesiak

2015

Adsorption

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This study presents the synthesis of hybrid microspheres based on monomers of various chemical nature. As organic compounds, styrene and 1,4-divinylbenzene were used, whereas triethoxyvinylsilane (TEVS) was applied as an inorganic one. Four different systems with the increasing quantity of TEVS were studied. Then inorganic parts of TEVS were removed with aqueous solution of NaOH. Structure of the new materials was confirmed by FTIR-ATR, EDX-SEM and TGA analyses. Thermal resistance of the copolymers was assessed using the TG-DTG system. The synthesized hybrid materials exhibited highly developed porous structure that was confirmed from the low-temperature nitrogen adsorption data. The prepared materials were tested as sorbents for removing organic compounds from aqueous solutions using the SPE technique.

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

Cited by 23 publications

References 23 publications

Polymer-clay nanocomposites: chemical grafting of polystyrene onto Cloisite 20A

Polymer-clay nanocomposites: chemical grafting of polystyrene onto Cloisite 20A

Synthesis and Characterization of Polydimethylsiloxane end-Modified Polystyrene from Poly(Styrene – co –Vinyltriethoxysilane) Copolymers

Synthesis and characterization of organic–inorganic hybrid microspheres

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