Degradation of nickel (86MeV) ion irradiated polystyrene

Singh, Lakhwant; Samra, Kawaljeet Singh; Singh, Ravinder J.; Solania, Indira; Avasthi, D.K.

doi:10.1016/j.jnoncrysol.2007.07.018

Cited by 8 publications

(4 citation statements)

References 16 publications

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“…This is evidenced by a large number of articles summarized both in reviews [1,2] and major monographs [3]. Irradiation of polymers with swift ions leads to various irreversible effects, such as amorphization and destruction [4,5], surface modification [6][7][8], and chemical cross-linking of polymers [9][10][11]. The irreversibility of these effects is due to them being caused by highly energetic δ-electrons knocked out from the track core by the irradiating ions and cascades of secondary electrons formed in turn by these δ-electrons [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Induced Spirals in Polyethylene Terephthalate Films Irradiated with Ar Ions with an Energy of 70 MeV

et al. 2020

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This paper presents the results of a study of the ordering in polyethylene terephthalate (PET) film induced by Ar8+ ions with an irradiation fluence of 2 × 1012 ions/cm2, and of the temporal stability of the induced ordering in the irradiated sample, over a three month period. Immediately after irradiation, sharp new reflections not seen at lower fluences were observed in X-ray diffraction patterns, with angular positions of 2 θ = 9–10° and 19° and variable azimuthal intensities. X-ray reflections, previously observed at lower fluences, were also seen: at 2 θ = 26° and 23°, associated with PET crystallites, and at 2 θ = 5–12°, associated with induced ordering in the amorphous zone. Aging of the irradiated sample led to significant growth of the ordering region in the amorphous zone for angles up to 2 θ < 15°, as well as to dissipation and blurring of the new diffraction reflections at 2 θ = 9–10° and 2 θ = 19° and the formation of a new diffraction ring reflection in the range 2 θ = 11–16°. The azimuthal distribution of diffraction reflection intensities immediately after irradiation displays a clear oblique cross located predominantly along lines at angles of π/4 with respect to the direction of the texture of the PET film, indicating the formation of spiral structures based on the molecular strands of PET. Our experimental results lead us to conclude that the formation of coherent scattering areas in the amorphous region at 2 θ < 15° is due to intra-chain rotations of benzene-carboxyl subunits of repeat units of the PET chain molecules interacting with the residual electric field of a single latent track; whereas the formation of spiral structures is due to the inter-chain interaction of these preordered asymmetric subunits under the influence of the electric fields from overlapping latent tracks.

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Section: Introductionmentioning

confidence: 99%

Induced Spirals in Polyethylene Terephthalate Films Irradiated with Ar Ions with an Energy of 70 MeV

et al. 2020

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“…Furthermore, after treatment with PBS, the absorbance of the film increased slightly in intensity in the tail region. The increase in absorbance near the visible region was associated with the formation of defect centers and carbonized or p-conjugated groups [59][60][61].…”

Section: Uv-vis Absorbance Studiesmentioning

confidence: 99%

Modification of polystyrene surface in aqueous solutions

Mielczarski

Jeyachandran

Mielczarski

et al. 2011

Journal of Colloid and Interface Science

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“…The changes stimulated in the polymers not only depend upon the energy of the irradiating ions, but also on the ion species [2]. After the collisions of irradiating ions with target particles, the ions loss their energy by ionization, excitation, and collision processes [3]. The irreversible changes activated in the polymer, due to ion irradiation, are quite different from those stimulated by low ionizing particles [4].…”

Section: Introductionmentioning

confidence: 99%

Optical Study of carbon ion irradiated Poly (methyl methacrylate) films

2017

IJRTER

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Degradation of nickel (86MeV) ion irradiated polystyrene

Cited by 8 publications

References 16 publications

Induced Spirals in Polyethylene Terephthalate Films Irradiated with Ar Ions with an Energy of 70 MeV

Induced Spirals in Polyethylene Terephthalate Films Irradiated with Ar Ions with an Energy of 70 MeV

Modification of polystyrene surface in aqueous solutions

Optical Study of carbon ion irradiated Poly (methyl methacrylate) films

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