Atom transfer radical polymerization of graft chains onto polyethylene film initiated at tribromomethyl unit introduced by electron beam irradiation

Komatsu, Makoto; Kawakami, Takashi; Kanno, Jun Ichi; Sasaki, Takeo

doi:10.1002/app.33071

Cited by 7 publications

(6 citation statements)

References 25 publications

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“…However, there are scarcely any publications dealing with this novel type of grafting mechanism, since RIG is typically performed exclusively with vinyl monomers (i.e., RIGP). So far, a similar application was found involving the use of the non-vinyl carbon tetrabromide CBr 4 to introduce bromide functionalities for subsequent ATRP-controlled methacrylate grafting [ 53 ].…”

Section: Introductionmentioning

confidence: 98%

Radiation-Induced Graft Immobilization (RIGI): Covalent Binding of Non-Vinyl Compounds on Polymer Membranes

et al. 2021

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Radiation-induced graft immobilization (RIGI) is a novel method for the covalent binding of substances on polymeric materials without the use of additional chemicals. In contrast to the well-known radiation-induced graft polymerization (RIGP), RIGI can use non-vinyl compounds such as small and large functional molecules, hydrophilic polymers, or even enzymes. In a one-step electron-beam-based process, immobilization can be performed in a clean, fast, and continuous operation mode, as required for industrial applications. This study proposes a reaction mechanism using polyvinylidene fluoride (PVDF) and two small model molecules, glycine and taurine, in aqueous solution. Covalent coupling of single molecules is achieved by radical recombination and alkene addition reactions, with water radiolysis playing a crucial role in the formation of reactive solute species. Hydroxyl radicals contribute mainly to the immobilization, while solvated electrons and hydrogen radicals play a minor role. Release of fluoride is mainly induced by direct ionization of the polymer and supported by water. Hydrophobic chains attached to cations appear to enhance the covalent attachment of solutes to the polymer surface. Computational work is complemented by experimental studies, including X-ray photoelectron spectroscopy (XPS) and fluoride high-performance ion chromatography (HPIC).

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Section: Introductionmentioning

confidence: 98%

Radiation-Induced Graft Immobilization (RIGI): Covalent Binding of Non-Vinyl Compounds on Polymer Membranes

et al. 2021

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“…Polymer surfaces can also be modified using electron and ion beams [ 185 – 186 ]. Komatsu et al reported surface-initiated ATRP from electron-beam irradiated polymer surfaces [ 187 ].…”

Section: Reviewmentioning

confidence: 99%

Radical chemistry in polymer science: an overview and recent advances

Wang,

Cui,

Sui

et al. 2023

Beilstein J. Org. Chem.

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Radical chemistry is one of the most important methods used in modern polymer science and industry. Over the past century, new knowledge on radical chemistry has both promoted and been generated from the emergence of polymer synthesis and modification techniques. In this review, we discuss radical chemistry in polymer science from four interconnected aspects. We begin with radical polymerization, the most employed technique for industrial production of polymeric materials, and other polymer synthesis involving a radical process. Post-polymerization modification, including polymer crosslinking and polymer surface modification, is the key process that introduces functionality and practicality to polymeric materials. Radical depolymerization, an efficient approach to destroy polymers, finds applications in two distinct fields, semiconductor industry and environmental protection. Polymer chemistry has largely diverged from organic chemistry with the fine division of modern science but polymer chemists constantly acquire new inspirations from organic chemists. Dialogues on radical chemistry between the two communities will deepen the understanding of the two fields and benefit the humanity.

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“…This limitation can be circumvented by the “grafting from” method, in which the initiating groups such as peroxides are anchored onto the hydrocarbon backbone of the polyolefin followed by in situ polymerization 20, 21. Hydroperoxide and dialkyl peroxides can be produced on the polymer backbone at room temperature by several methods including plasma treatment and high energy radiation (ion beams or electron beams) in presence of air 22–24. Then, the peroxides generated after irradiation can be activated at higher temperature in presence of a monomer.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, pre‐irradiated linear low density polyethylene was melt grafted with acrylic acid, methacrylic acid, and methyl methacrylate monomers by reactive extrusion in the temperature range 160–200 °C and similar apparent chain propagation rate coefficients of grafting and homopolymerization were obtained 22. However, the polymer grafting density was lower than 2 wt% by using pre‐irradiated polyethylene 22–24. The more convenient route for a chemical modification of polyethylene in an extruder is to use free radical initiators such as peroxides acting as hydrogen abstractors 8, 15, 25, 26.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Poly(methyl methacrylate)‐Grafted Poly(ethylene‐co‐1‐octene) Copolymers by a “Grafting from” Melt Process

Badel¹,

Beyou²,

Bounor‐Legaré³

et al. 2012

Macro Materials & Eng

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Graft copolymers with a poly(ethylene‐co‐1‐octene) backbone and poly(methyl methacrylate) random polymer branches are successfully synthesized by the grafting‐from technique in the molten state. The in situ radical polymerization of methyl methacrylate from the polyolefin backbone is investigated with two different peroxide initiators at 135 and 150 °C, respectively. The number of PMMA grafts per polyolefin chain is varied from 0.08 to 1.07 with PMMA polymerization degrees of 500 and 18, respectively, depending on the experimental conditions. The effect of a nitroxyl‐based radical scavenger (i.e., DEPN) on competition between the grafting of PMMA from the polyolefin backbone and MMA homopolymerization is also explored.

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Atom transfer radical polymerization of graft chains onto polyethylene film initiated at tribromomethyl unit introduced by electron beam irradiation

Cited by 7 publications

References 25 publications

Radiation-Induced Graft Immobilization (RIGI): Covalent Binding of Non-Vinyl Compounds on Polymer Membranes

Radiation-Induced Graft Immobilization (RIGI): Covalent Binding of Non-Vinyl Compounds on Polymer Membranes

Radical chemistry in polymer science: an overview and recent advances

Synthesis of Poly(methyl methacrylate)‐Grafted Poly(ethylene‐co‐1‐octene) Copolymers by a “Grafting from” Melt Process

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