Irradiation effects on aromatic polymers: 1. Gas evolution by gamma irradiation

Hegazy, El‐Sayed A.; Sasuga, Tsuneo; Nishii, Masanobu; Seguchi, Tadao

doi:10.1016/0032-3861(92)90074-7

Cited by 71 publications

(22 citation statements)

References 12 publications

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“…Nevertheless, these reports seem to contradict with each other, that is, some [1][2][3] have reported that PSF irradiated in vacuum environment are mainly degraded by main chain scission, while others [4,5] reported that cross-linking predominates over scission under vacuum in PSF. Thus, both cross-linking and main chain scission were reported for the irradiation effects on PSF.…”

Section: Introductionmentioning

confidence: 81%

“…Many studies have investigated irradiation effect on PSF at high temperature [1][2][3][4][5]. Nevertheless, these reports seem to contradict with each other, that is, some [1][2][3] have reported that PSF irradiated in vacuum environment are mainly degraded by main chain scission, while others [4,5] reported that cross-linking predominates over scission under vacuum in PSF.…”

Section: Introductionmentioning

confidence: 87%

“…In addition, PSF shows high resistance to radiation. So we expect wide application of PSF for various severe environments, such as fusion reactors and space vehicles and satellites [1]. In space, for example, materials are exposed not only to high radiation field but also to high and cryogenic temperature environment.…”

Section: Introductionmentioning

confidence: 99%

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Gamma-rays irradiation effects on polysulfone at high temperature

Murakami

Kudo

2007

Nuclear Instruments and Methods in Physics Research Section B:

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Section: Introductionmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 87%

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Gamma-rays irradiation effects on polysulfone at high temperature

Murakami

Kudo

2007

Nuclear Instruments and Methods in Physics Research Section B:

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“…The radiation stability of crystalline and amorphous PEEK has been extensively studied for the past two decades due to interest in spacecraft applications and nuclear fusion reactors, where the total exposure to radiation ranges between 10 and 50 MGy (i.e., 10,000 -50,000 kGy) [56,67,[69][70][71][72][73][74][75][76][77]. Although degradation and crosslinking of PEEK occur at doses above 10 MGy, it should be appreciated that the exposures of concern to the aerospace and nuclear power industry exceed the standard sterilization doses for medical devices (25-40 kGy) by three orders of magnitude.…”

Section: Chemical Thermal and Radiation Stability: Implications Formentioning

confidence: 99%

PEEK biomaterials in trauma, orthopedic, and spinal implants

Kurtz

Devine²

2007

Biomaterials

2,022

1,518

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Since the 1980s, polyaryletherketones (PAEKs) have been increasingly employed as biomaterials for trauma, orthopedic, and spinal implants. We have synthesized the extensive polymer science literature as it relates to structure, mechanical properties, and chemical resistance of PAEK biomaterials. With this foundation, one can more readily appreciate why this family of polymers will be inherently strong, inert, and biocompatible. Due to its relative inertness, PEEK biomaterials are an attractive platform upon which to develop novel bioactive materials, and some steps have already been taken in that direction, with the blending of HA and TCP into sintered PEEK. However, to date, blended HA-PEEK composites have involved a trade-off in mechanical properties in exchange for their increased bioactivity. PEEK has had the greatest clinical impact in the field of spine implant design, and PEEK is now broadly accepted as a radiolucent alternative to metallic biomaterials in the spine community. For mature fields, such as total joint replacements and fracture fixation implants, radiolucency is an attractive but not necessarily critical material feature.

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“…Table 3. 103.G(gas) for irradiation at 30°C 100 m films vacuum (Hegazy et al, 1992a) www.intechopen.com…”

Section: Effect Of Aromaticity On Radiostabilitymentioning

confidence: 99%