Reaction mechanism of suspension graft copolymerization of styrene and acrylonitrile in the presence of ethylene propylene diene terpolymer

Mai, Jianzhang; Wang, Lianshi

doi:10.1039/c3py01053h

Cited by 8 publications

(6 citation statements)

References 33 publications

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“…In the second category, an inert gas plasma or simply plasma-generated UV radiation is used to create free radicals on the polymer surface for the subsequent modification step. ,− ,− …”

Section: Plasma-initiated Polymerizationmentioning

confidence: 99%

Free-Radical-Induced Grafting from Plasma Polymer Surfaces

et al. 2016

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With the advances in science and engineering in the second part of the 20th century, emerging plasma-based technologies continuously find increasing applications in the domain of polymer chemistry, among others. Plasma technologies are predominantly used in two different ways: for the treatment of polymer substrates by a reactive or inert gas aiming at a specific surface functionalization or for the synthesis of a plasma polymer with a unique set of properties from an organic or mixed organic-inorganic precursor. Plasma polymer films (PPFs), often deposited by plasma-enhanced chemical vapor deposition (PECVD), currently attract a great deal of attention. Such films are widely used in various fields for the coating of solid substrates, including membranes, semiconductors, metals, textiles, and polymers, because of a combination of interesting properties such as excellent adhesion, highly cross-linked structures, and the possibility of tuning properties by simply varying the precursor and/or the synthesis parameters. Among the many appealing features of plasma-synthesized and -treated polymers, a highly reactive surface, rich in free radicals arising from deposition/treatment specifics, offers a particular advantage. When handled carefully, these reactive free radicals open doors to the controllable surface functionalization of materials without affecting their bulk properties. The goal of this review is to illustrate the increasing application of plasma-based technologies for tuning the surface properties of polymers, principally through free-radical chemistry.

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“…In the second category, an inert gas plasma or simply plasma-generated UV radiation is used to create free radicals on the polymer surface for the subsequent modification step. ,− ,− …”

Section: Plasma-initiated Polymerizationmentioning

confidence: 99%

Free-Radical-Induced Grafting from Plasma Polymer Surfaces

et al. 2016

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“…A certain amount of polymers were dissolved in CDCl 3 . The copolymer composition and structures were calculated by comparing the ve proton signals at 6.5-7.5 ppm for benzene ring group of St, the proton signals at 3.61-3.81 ppm for -OCH 2 -group of GMA, and the proton signals on cyanine-adjacent carbon atoms of AN at 2.25-2.33 ppm [33].…”

Section: Ftir Analysismentioning

confidence: 99%

Preparation of epoxy-functionalized AES (GAES) resins by high-temperature bulk polymerization

Sun,

Li,

Nie

et al. 2024

Preprint

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In this paper, the monomers of styrene (St), acrylonitrile (AN), and glycidyl methacrylate (GMA) were grafted onto ethylene-propylene-diene-monomer (EPDM) rubbers, and the epoxy-functionalized AES (GAES) resins were successfully prepared by high-temperature bulk polymerization. The effects of polymerization reaction conditions, i.e. the content of initiator and chain transfer agent, the content of EPDM and GMA on the grafting rate, composition of free copolymers, molecular weights and their distributions of GAES resins were investigated in detail. The influence of GMA content on the thermal stabilities of GAES resins were also discussed. Experimental results showed that under the optimized experimental conditions, the highest grafting rate of GAES resins reached to 48.8% and the grafting efficiency was 35.3%. Under the same reaction conditions, the molecular weights of free copolymers can reach to 70,000 g mol− 1. The content of initiator and chain transfer agent had no obvious influence on the composition of free copolymers, but the component of GMA in free copolymers increased gradually with increasing content of EPDM. TG analysis results indicated that the incorporation of GMA decreased the thermal stabilities of GAES resins.

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“…IEDDA in material science is a sort of copper‐free polymerization reaction. Free‐radical polymerization, a radical polymerization technique, is one of the important synthesis techniques to obtain a wide variety of polymers [24–26] . In addition, free‐radical polymerization is one of the most important processes for industrial polymer production.…”

Section: Introductionmentioning

confidence: 99%

“…Free-radical polymerization, a radical polymerization technique, is one of the important synthesis techniques to obtain a wide variety of polymers. [24][25][26] In addition, free-radical polymerization is one of the most important processes for industrial polymer production. Because with a wider monomer class, polymerization can be performed more easily under moderate experimental conditions.…”

Section: Introductionmentioning

confidence: 99%

Modification of Poly(Styrene‐co‐Acrylonitrile) with Tetrazine by Inverse Electron Demand Diels‐Alder Reaction

Meyvacı

Öztürk

2022

ChemistrySelect

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Poly(styrene‐co‐acrylonitrile) [P(SAN)] copolymer was obtained by using styrene and acrylonitrile monomers via free‐radical polymerization. The tetrazine groups were formed in the P(SAN) copolymer backbone by using 2‐fluorobenzyl cyanide, hydrazine hydrate, zinc iodide as the catalyst, and sodium nitrile. The tetrazine groups in the copolymer backbone were modified using trans‐cyclooctenol by the Inverse Electron Demand Diels‐Alder reaction. The spectroscopic properties of the obtained products were determined by Fourier transform infrared and proton nuclear magnetic resonance and their thermal properties were determined by thermogravimetric analysis and differential scanning calorimetry techniques. The average molecular weights of the synthesized polymers were defined by using gel permeation chromatography method.

show abstract

Reaction mechanism of suspension graft copolymerization of styrene and acrylonitrile in the presence of ethylene propylene diene terpolymer

Cited by 8 publications

References 33 publications

Free-Radical-Induced Grafting from Plasma Polymer Surfaces

Free-Radical-Induced Grafting from Plasma Polymer Surfaces

Preparation of epoxy-functionalized AES (GAES) resins by high-temperature bulk polymerization

Modification of Poly(Styrene‐co‐Acrylonitrile) with Tetrazine by Inverse Electron Demand Diels‐Alder Reaction

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