Graft copolymerisation studies Part 1. Models related to polyolefins

Dokolas, Peter; Looney, Mark G.; Musgrave, Stuart; Poon, Simon K.

doi:10.1016/s0032-3861(99)00529-7

Cited by 35 publications

(48 citation statements)

References 25 publications

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“…The mechanism of polypropylene grafting reaction has been studied by many scholars and it has been well established that a free-radical grafting process starts with the formation of macroradicals along the PP chains[15,36–38]. Generally, the primary radicals are formed by decomposition of the initiator in the free-radical grafting system.…”

Section: Resultsmentioning

confidence: 99%

Study of suspension grafting process of polypropylene

Liang

Yuan

Shao

et al. 2018

Designed Monomers and Polymers

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Grafting efficiency is an important indicator of polypropylene grafting reaction. A series of studies have been accomplished, including the conditions of free radical presence on PP backbone during peroxide initiation, the effect of preheat treatment and reaction time on PP suspension grafting results, and the effect of peroxide residue on properties of modified PP. An optimized grafting process was proposed by mixing and preheating polypropylene (PP) and the initiator benzoyl peroxide (BPO) before adding the grafting monomer glycidyl methacrylate (GMA),resulting in an increase in grafting efficiency from 50.0% to 78.2%. With initiator residue removed by alternating temperature treatment, the suspension grafting reaction time could be substantially reduced.

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Section: Resultsmentioning

confidence: 99%

Study of suspension grafting process of polypropylene

Liang

Yuan

Shao

et al. 2018

Designed Monomers and Polymers

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“…The presence of tert‐butoxyl groups in the structure of peroxide fragments is also important. It is known that tert‐butoxyl radicals are effective in the reactions of chain transfer, including transfers to polypropylene and polyethylene molecules 13, 14.…”

Section: Resultsmentioning

confidence: 99%

Prediction of Interfacial Interactions between Polymer Layers

Варваренко¹,

Samaryk²,

Носова³

et al. 2010

Macromolecular Symposia

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Summary: Results of a study on polymer surface modification using heterofunctional polyperoxides are presented. A prognostic model of the polymer surface modifier efficiency was developed on the basis of obtained data. It was shown that implementation of demands to the macromolecule composition during development of new peroxide‐containing modifiers in combination with sufficient peroxide group reactivity increased efficiency of the polymer surface modification.

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“…In 2000 Dokolas et al . showed the formation of alkyl radicals during the reaction between a peroxide and model compounds mimicking the main chain of PE or PP by exploiting the NRC reaction.…”

Section: Nrc Reaction In Peroxide‐initiated Post‐polymerization Modifmentioning

confidence: 99%

“…The use of nitroxides to functionalize saturated hydrocarbon polymers In 2000 Dokolas et al 74 showed the formation of alkyl radicals during the reaction between a peroxide and model compounds mimicking the main chain of PE or PP by exploiting the NRC reaction. Analysis of the products of the coupling reaction allowed the preferred hydrogen abstraction position to be determined giving also useful information for the radical functionalization of POs.…”

Section: Controlled Peroxide-initiated Polymer Functionalizationmentioning

confidence: 99%

Post‐polymerization modification by nitroxide radical coupling

Coiai

Passaglia

Cicogna

2018

Polymer International

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Post‐polymerization modification is an attractive approach to extend applications and convert commodity plastics into products with new, desirable and tunable properties. Among the post‐polymerization modification methods, the nitroxide radical coupling (NRC) reaction has been shown to be a convenient and versatile way to graft specific functionalities onto polymer chains and to control the onset and yield of polymer crosslinking during peroxide‐initiated processes. The use of 2,2,6,6‐tetramethylpiperidine‐1‐oxyl (TEMPO) and its derivatives as controllers of scorch in crosslinking and as functionalizers in functionalization reactions is thoroughly described. Examples are also given of graft polymerization from macroalkoxyamines generated by NRC and grafting of nitroxides by irradiation processes. In addition, in this review we attempt to demonstrate the broad applications of the NRC reaction in the preparation of polymers with a multitude of functionalities and elaborate architectures. The examples discussed here concern the use of atom transfer and single electron transfer NRC reactions to design a variety of polymers with asymmetrical structure and the use of the radical crossover reaction, based on the alkoxyamine dynamic covalent bond, to generate reversible polymer structures and switchable functional polymers. © 2018 Society of Chemical Industry

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Graft copolymerisation studies Part 1. Models related to polyolefins

Cited by 35 publications

References 25 publications

Study of suspension grafting process of polypropylene

Study of suspension grafting process of polypropylene

Prediction of Interfacial Interactions between Polymer Layers

Post‐polymerization modification by nitroxide radical coupling

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