Study of chain scission versus crosslinking in MeV ion-irradiated polycarbonate using dielectric constant measurements and UV spectroscopy

Mujahid, Mohammad; Singh, Pushpendra; Srivastava, D.S.; Gupta, Sanjay; Avasthi, D.K.; Kanjilal, D.

doi:10.1016/j.radmeas.2003.09.004

Cited by 35 publications

(17 citation statements)

References 12 publications

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“…Generally, ions irradiation causes chain scissions [5], creation of unsaturated bonds [6], bond breaking, carbonization [7], crosslinking [8][9][10][11], etc. Such effects are accountable for the alterations in structural, optical, electrical, and mechanical properties of the implanted/irradiated polymeric materials [7,12,13].…”

Section: Introductionmentioning

confidence: 99%

High electronic excitation induced modifications by 100MeV O7+ and 150MeV Ni11+ ions in Makrofol KG polycarbonate film

Kumar

Sonkawade

Dhaliwal

2012

Nuclear Instruments and Methods in Physics Research Section B:

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Section: Introductionmentioning

confidence: 99%

High electronic excitation induced modifications by 100MeV O7+ and 150MeV Ni11+ ions in Makrofol KG polycarbonate film

Kumar

Sonkawade

Dhaliwal

2012

Nuclear Instruments and Methods in Physics Research Section B:

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“…Irradiation of track detectors with ionizing radiation has been found to cause surface damage and degradation of the amorphous nature of the polymer, converting it into an easily etchable material. Molecular chain scission, intermolecular cross-linking, rearrangement of bonding, and formation of carbon-rich clusters are some structural deformations in the irradiated polymer that lead to changes in the optical and dielectric properties of the material (Mujahid et al, 2004;Nouh, 2004).…”

Section: Introductionmentioning

confidence: 99%

Impedance spectroscopy of gamma irradiated PM-355

Al-Karmi

2006

Radiation Measurements

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“…The increase in the absorbance of the CÀ ÀOÀ ÀC group in the dose range from 40-100 kGy, is caused by the formation of new CO groups. 17 The increase of OH group in the same dose range along with increase of molecular weight of the samples indicate that a process of ''end-linking'' is happened, in which OH groups are linked to the main chain of polymer to give a branched molecule of a higher molecular weight. 18 …”

Section: Infrared Spectroscopymentioning

confidence: 95%

Thermal, mechanical, and structural investigation of the effect of electron beam‐irradiation in Bayfol nuclear track detector

Nouh

Hegazy

Hussieny

et al. 2007

J of Applied Polymer Sci

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Samples from sheets of the polymeric material Bayfol have been exposed to electron beam in the dose range 10-100 kGy. The resultant effect of electron beam irradiation on the thermal properties of Bayfol has been investigated using thermogravimetric analysis. The onset temperature of decomposition T 0 and activation energy of thermal decomposition E a were calculated, results indicating that the Bayfol polymer decomposes in one main weight loss stage. Also, the electron irradiation in the dose range 40-100 kGy led to a more compact structure of Bayfol polymer, which resulted in an improvement in its thermal stability with an increase in activation energy of thermal decomposition. The variation of transition temperatures with electron dose has been determined using differential thermal analysis. The results indicate that the electron irradiation in the dose range 40-100 kGy causes crosslinking that destroys the crystalline structure depressing the melting temperature and this is most suitable for applications requiring the molding of this polymer at lower temperatures. In addition, the mechanical and structural properties of Bayfol samples were measured and the results revealed that the tensile strength, elongation at break, yield strength, and intrinsic viscosity were affected by the electron doses.

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Study of chain scission versus crosslinking in MeV ion-irradiated polycarbonate using dielectric constant measurements and UV spectroscopy

Cited by 35 publications

References 12 publications

High electronic excitation induced modifications by 100MeV O7+ and 150MeV Ni11+ ions in Makrofol KG polycarbonate film

High electronic excitation induced modifications by 100MeV O7+ and 150MeV Ni11+ ions in Makrofol KG polycarbonate film

Impedance spectroscopy of gamma irradiated PM-355

Thermal, mechanical, and structural investigation of the effect of electron beam‐irradiation in Bayfol nuclear track detector

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