Effect of ion irradiation on the thermal stability of thin polymer films

Esteves, C.R.B.; Thomaz, Raquel Silva; Gutierres, L. I.; Papaléo, R.M.

doi:10.1016/j.nimb.2013.05.041

Cited by 5 publications

(2 citation statements)

References 18 publications

(25 reference statements)

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“…Increases in polymer film roughness following irradiation have been observed in other polymer thin films, and plays an important role in a variety of physical processes, including thermal and electrical conduction, and the adhesion strength of metals deposited over ion irradiated polymers . Furthermore, micro‐ and nanoscale topographies have a marked effect on the attachment and proliferation of microorganisms, with maximum contact area and binding potential occurring when surface features are of comparable size to the microorganisms in question .…”

Section: Resultsmentioning

confidence: 99%

Formation of nanocrystalline and amorphous carbon by high fluence swift heavy ion irradiation of a plasma polymerized polyterpenol thin film precursor

Grant

Siegele

Bazaka

et al. 2018

J of Applied Polymer Sci

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This study aimed to produce graphitic-polymer nanocomposite thin films via the swift heavy ion irradiation of polyterpenol thin films synthesized from an environmentally sustainable precursor by radio-frequency plasma enhanced chemical vapor deposition. Atomic force microscopy and scanning electron microscopy revealed fluence-dependent surface restructuring of the thin films leading to the formation of interconnected island structures, with no discernible delamination from the underlying aluminum substrate. Raman spectroscopy confirmed the development of D and G peaks associated with graphitic materials, whilst Fourier transform infrared spectroscopy indicated retention of the plasma polymer's chemical functionalities (including hydroxyl groups) within the material after irradiation. Graphitic-polymer nanocomposite films prepared by this dry and solvent-free process have numerous potential applications in biological assay, organic electronics, and membrane technology.

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Section: Resultsmentioning

confidence: 99%

Formation of nanocrystalline and amorphous carbon by high fluence swift heavy ion irradiation of a plasma polymerized polyterpenol thin film precursor

Grant

Siegele

Bazaka

et al. 2018

J of Applied Polymer Sci

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“…Energetic ion interaction with polymers plays an important role in modifying their properties . High energetic heavy ion irradiation on polymer film induces significant changes such as chain scission, cross‐linking, structural changes, amorphization, and degradation in bulk . The literature survey reveals that meager work in the direction of the molecular dynamics associated with various dielectric relaxation processes in LCPUs has been carried out.…”

Section: Introductionmentioning

confidence: 99%

Dielectric Spectroscopy of Pristine and O⁷⁺ Ion Irradiated NCO‐Terminated Polybutadiene‐Based Liquid Crystalline Polyurethane

Lal

Quamara

2014

Adv Polym Technol

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The dielectric constant (ε ) and loss factor (ε ) have been measured in NCO-terminated polybutadiene-based pristine and 100 MeV O 7+ ion irradiated liquid crystalline polyurethane in the temperature region of 80-300 K at frequencies ranging from 1 KHz to 1 MHz. The variation in ε with temperature in different temperature regions has been analyzed in relation to the dipole structure of the molecules. The ε -T plots of pristine liquid crystalline polyurethane (LCPU) reveal the presence of multiple relaxation processes associated with the crankshaft motion of but-2-ene groups, dipolar nature of carbonyl groups, and glass transition temperature, respectively. An additional dielectric loss peak is observed in irradiated LCPU samples associated with the Maxwell-Wagner-Sillars (MWS) polarization. There is an overall increase in ε in irradiated samples due to the dominance of MWS polarization arising from the large number of radiation-induced defect sites and free radicals. The loss in γ relaxation due to chain scissions of but-2-ene groups and the formation of new subpolar groups providing a new dipolar relaxation process is observed in irradiated LCPU samples. The variation in ε with fluence shows the occurrence of a secondary radiation induced crystallization in irradiated LCPU samples. The X-ray diffraction analysis also shows the effect of fluence on the crystalline nature of LCPU samples. C

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Ion Beam Modification of Poly(methyl methacrylate) (PMMA)

Thomaz

Papaléo

2019

Radiation Effects in Polymeric Materials

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Effect of ion irradiation on the thermal stability of thin polymer films

Cited by 5 publications

References 18 publications

Formation of nanocrystalline and amorphous carbon by high fluence swift heavy ion irradiation of a plasma polymerized polyterpenol thin film precursor

Formation of nanocrystalline and amorphous carbon by high fluence swift heavy ion irradiation of a plasma polymerized polyterpenol thin film precursor

Dielectric Spectroscopy of Pristine and O⁷⁺ Ion Irradiated NCO‐Terminated Polybutadiene‐Based Liquid Crystalline Polyurethane

Ion Beam Modification of Poly(methyl methacrylate) (PMMA)

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Effect of ion irradiation on the thermal stability of thin polymer films

Cited by 5 publications

References 18 publications

Formation of nanocrystalline and amorphous carbon by high fluence swift heavy ion irradiation of a plasma polymerized polyterpenol thin film precursor

Formation of nanocrystalline and amorphous carbon by high fluence swift heavy ion irradiation of a plasma polymerized polyterpenol thin film precursor

Dielectric Spectroscopy of Pristine and O7+ Ion Irradiated NCO‐Terminated Polybutadiene‐Based Liquid Crystalline Polyurethane

Ion Beam Modification of Poly(methyl methacrylate) (PMMA)

Contact Info

Product

Resources

About

Dielectric Spectroscopy of Pristine and O⁷⁺ Ion Irradiated NCO‐Terminated Polybutadiene‐Based Liquid Crystalline Polyurethane