Degradation in Thermal Properties and Morphology of Polyetheretherketone-Alumina Composites Exposed to Gamma Radiation

Lawrence, Falix; Mishra, Satyabrata; Mallika, C.; Mudali, U. Kamachi; Natarajan, R.; Ponraju, D.; Seshadri, S.K.; Kumar, T.S. Sampath

doi:10.1007/s11665-011-0025-y

Cited by 11 publications

(5 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the Vacuum UltraViolet (VUV) wavelength range damage is often encountered [17][18][19][20] and even used as a fabrication method in lithography [21,22]. γ-rays are used as a method to induce cross linking in polymeric systems [23][24][25] or as a biological sterilization method which intrinsically implies radiation damage [26,27]. In this text we will limit ourselves to the photon energy range which is commonly used in techniques such as powder diffraction, X-ray absorption spectroscopy and SAXS/WAXS.…”

Section: Introductionmentioning

confidence: 99%

Unexpected effects in non crystalline materials exposed to X-ray radiation

Bras

Stanley

2016

Journal of Non-Crystalline Solids

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Unexpected effects in non crystalline materials exposed to X-ray radiation

Bras

Stanley

2016

Journal of Non-Crystalline Solids

View full text Add to dashboard Cite

“…The above results indicate that irradiation can lead to morphology changes of the three polymers. Lawrence et al [29] . considered that small molecular products produced by irradiation degradation lead to changes in surface stress and strain, further leading to the appearance and expansion of polymer defects.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Amorphous Poly (aryl ether ketone) Resin and its Anti‐Irradiation Properties under Gamma Ray

Teng

Hong-hua

et al. 2023

ChemistrySelect

View full text Add to dashboard Cite

The stability of polymer materials used in nuclear environment directly determines the life and reliability of nuclear power equipment. Poly (aryl ether ketone) (PAEK) itself exhibits excellent irradiation resistance which can be widely used. The emphasis of this study lies in designing and synthesizing three different structures of amorphous PAEKs by the solution SN2 nucleophilic polycondensation. The thermodynamic properties and structural changes of the materials under gamma‐ ray (γ‐ray) irradiation were investigated and the irradiation‐resistance mechanism was discussed. The present results illustrate that the performance can be basically stable lower than 108 Gy. Up to 1013 Gy dose, γ‐ray has little effect on the impact resistance and Young ′s modulus of the three materials, the tensile strength and elongation at break decreased with the increase of irradiation dose. No new structures were formed after irradiation, and all the three materials decomposed slightly caused by oxidized.

show abstract

“…The above results indicate that irradiation can lead to the surface morphology changes of the three polymers. Lawrence et al 27 suggested the irradiation-induced degradation products led to the change of stress and strain of the surface, which will result in the appearance and propagation of surface defects in the polymer.…”

Section: Mechanical and Tribological Propertiesmentioning

confidence: 99%

Comparative study on microstructure, mechanical, and tribological property of gamma‐irradiated polytetrafluoroethylene, polyetheretherketone, and polyimide polymers

Chai

Ning

Qiao

et al. 2021

Surface & Interface Analysis

View full text Add to dashboard Cite

In this paper, three commercial polymers (polytetrafluoroethylene [PTFE], polyetheretherketone [PEEK], and polyimide [PI]) were irradiated by gamma rays in the ambient air. The changes in microstructure, mechanical, and tribological properties of these three polymers after irradiation were investigated comparatively. The results display that both the surface and internal structures of PTFE are degraded due to the irradiation chemical reaction, and the molecular chain scission at the surface is more severe than that at its internal as a result of the involvement of oxygen. The oxidative degradation also plays a dominant role in the PEEK surface, but the molecular chain crosslink is dominant in the PEEK internal. The top layer of PI also shows the characteristics of oxidative irradiation degradation, but its internal exhibits excellent irradiation resistance and no structure change occurs even at irradiation doses up to 20 MGy. The microhardness and scratch resistance of irradiated surfaces for all three polymers decrease but only the scratching damage mode of PTFE changes after irradiation. Friction experiments show that the friction coefficients of PTFE increase but that of PEEK decrease after irradiation. The wear rates on the irradiated surfaces of all three polymers increase compared with the unirradiated samples. Moreover, there is a depth gradient effect on the wear properties of both irradiated PTFE and PEEK polymers. The changes in wear rates of irradiated surfaces are consistent with the structural variations of all three polymers.

show abstract

Degradation in Thermal Properties and Morphology of Polyetheretherketone-Alumina Composites Exposed to Gamma Radiation

Cited by 11 publications

References 19 publications

Unexpected effects in non crystalline materials exposed to X-ray radiation

Unexpected effects in non crystalline materials exposed to X-ray radiation

Synthesis of Amorphous Poly (aryl ether ketone) Resin and its Anti‐Irradiation Properties under Gamma Ray

Comparative study on microstructure, mechanical, and tribological property of gamma‐irradiated polytetrafluoroethylene, polyetheretherketone, and polyimide polymers

Contact Info

Product

Resources

About