The use of crosslinking promoters in the ?-radiolysis of poly(tetrafluoroethylene-co-perfluoromethylvinyl ether). II.

Forsythe, John S.; Hill, David J. T.; Logothetis, A. L.; Pomery, Peter J.; Whittaker, Andrew K.

doi:10.1002/(sici)1097-4628(20000321)75:12<1447::aid-app2>3.0.co;2-4

Cited by 5 publications

(1 citation statement)

References 8 publications

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“…The authors have succeeded to prepare a high-performance polymer (Li et al, 2004(Li et al, , 2005a. Recently, radiation-induced crosslinking of fluoropolymers, such as PTFE (Sun et al, 1994a, b;Lappan et al, 1999Lappan et al, , 2000Lappan et al, , 2001Fuchs and Scheler, 2000;Fuchs et al, 2002), PAF(or TFE/PMVE) (Dargaville et al, 2003;Forsythe et al, 1997Forsythe et al, , 1998aForsythe et al, -c, 1999Forsythe et al, , 2000 and FEP (Xiaoguang et al, 1992;Sun et al, 1993) at high temperature in the absence of oxygen have been also reported. Moreover, structural change was observed for PTFE irradiated by high-energy ion beam under atmospheric fields (Ohshima et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Formation of crosslinked PTFE by radiation-induced solid-state polymerization of tetrafluoroethylene at low temperatures

Ikeda

Τabata

Suzuki³

et al. 2008

Radiation Physics and Chemistry

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Section: Introductionmentioning

confidence: 99%

Formation of crosslinked PTFE by radiation-induced solid-state polymerization of tetrafluoroethylene at low temperatures

Ikeda

Τabata

Suzuki³

et al. 2008

Radiation Physics and Chemistry

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Radiation Chemistry of Polymers

Hill

Whittaker

2004

Encyclopedia of Polymer Science and Technology

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Polymeric materials are exposed to high energy radiation either deliberately to alter their properties or inadvertently during their use in high dose environments. As a consequence, an understanding of how radiation modifies the polymer structure, and hence properties, is essential for many applications. In addition, the understanding of the degradation of polymers with light or heat can benefit from knowledge of the reaction pathways of radical and charged species formed on irradiation with high energy photons. This article aims to provide a broad overview of the fundamental processes occurring during radiolysis of polymers. This is achieved through a discussion of the interaction of high energy photons with matter, and the subsequent reactions of mainly radical intermediates. Polymers either cross‐link or degrade on exposure to radiation, and the final properties of the polymers depend critically on the balance of these two main reaction pathways. A number of examples are taken from the literature to illustrate how the tendency to undergo cross‐linking or main‐chain scission depends on the polymer structure. The overall yield of reactions can be greatly reduced by the introduction of aromatic groups into the polymer structure. On the other hand, yields can be increased by the inclusion of radiation‐sensitive groups such as sulfones. Similarly, the rates of reactions and the balance between cross‐linking and scission can depend sensitively on the radiolysis temperature. While this review focuses on a discussion of the reactions occurring on radiolysis in vacuo, the effect of the presence of dissolved oxygen on the reaction pathways is also discussed.

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Radiation Chemistry of Polymers

Hill

Whittaker

2016

Encyclopedia of Polymer Science and Technology

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Polymeric materials are exposed to high energy radiation either deliberately to alter their properties or inadvertently during their use in high dose environments. As a consequence, an understanding of how radiation modifies polymer structure, and hence properties, is essential for many applications. In addition, the understanding of the degradation of polymers with light or heat can benefit from knowledge of the reaction pathways of radical and charged species formed on irradiation with high energy photons. This article aims to provide a broad overview of the fundamental processes occurring during radiolysis of polymers. This is achieved through a discussion of the interaction of high energy photons with matter, and the subsequent reactions of mainly radical intermediates. Polymers either cross‐link or degrade on exposure to radiation, and the final properties of the polymers depend critically on the balance of these main reaction pathways. Examples are taken from the literature to illustrate how the tendency to undergo cross‐linking or main‐chain scission depends on the polymer structure. The overall yield of reactions can be greatly reduced by the introduction of aromatic groups into the polymer structure. On the other hand, yields can be increased by the inclusion of radiation‐sensitive groups such as sulfones. Similarly, the rates of reactions and the balance between cross‐linking and scission can depend sensitively on the radiolysis temperature. While this review focuses on a discussion of the reactions occurring on radiolysisin vacuo, the effect of the presence of dissolved oxygen on the reaction pathways is also briefly addressed.

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The use of crosslinking promoters in the ?-radiolysis of poly(tetrafluoroethylene-co-perfluoromethylvinyl ether). II.

Cited by 5 publications

References 8 publications

Formation of crosslinked PTFE by radiation-induced solid-state polymerization of tetrafluoroethylene at low temperatures

Formation of crosslinked PTFE by radiation-induced solid-state polymerization of tetrafluoroethylene at low temperatures

Radiation Chemistry of Polymers

Radiation Chemistry of Polymers

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