Degradation in tensile properties of aromatic polymers by electron beam irradiation

Sasuga, Tsuneo; Hayakawa, Naohiro; Yoshida, Kenzo; Hagiwara, Miyuki

doi:10.1016/0032-3861(85)90226-5

Cited by 106 publications

(54 citation statements)

References 4 publications

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“…For e.g., the effects of 3 MeV proton radiation on the mechanical properties [7], 2 MeV electron irradiation on spectroscopic and thermal properties [8], 2 MeV electron radiation on mechanical properties [9] and 4 MeV light ions on hardness and Young's modulus [10] of various polyimides are reported. However, more investigations are needed as far as the radiation energy, mode of energy deposition and energy densities are concerned.…”

Section: Introductionmentioning

confidence: 99%

6MeV pulsed electron beam induced surface and structural changes in polyimide

Mathakari

Bhoraskar

Dhole

2010

Materials Science and Engineering: B

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Section: Introductionmentioning

confidence: 99%

6MeV pulsed electron beam induced surface and structural changes in polyimide

Mathakari

Bhoraskar

Dhole

2010

Materials Science and Engineering: 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

2,020

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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“…On the other hand, the tensile strength and elongation at break decreased with increase in irradiation dose, while the tensile modulus exhibited the tendency to increase in parallel with the irradiation dose. This increase in tensile modulus likely is due chiefly to the crosslinking of the PEEK backbone in the films, which suppresses chain movement and makes the films more rigid [28,29]. On the whole, the irradiation worsened the thermal and mechanical properties of the PEEK films, as previously reported [28,29,37e39].…”

Section: Preparation and Physical Properties Of Crosslinked Peek Filmsmentioning

confidence: 60%

“…Radiation crosslinking of the PEEK films (Vitrex Ò PEEK, 50 mm) were performed at room temperature under air atmosphere with 1 MeV of the accelerating voltage and 10 mA of the electric current using a 60 kW dual-beam type electron accelerator at the Takasaki, Japan Atomic Energy Agency (JAEA) [28,29]. The irradiation dose rate was determined to be 0.67 MGy/min.…”

Section: Methodsmentioning

confidence: 99%