IR spectroscopic investigation of the effect of deep UV irradiation on PET films

Zhu, Zhengmao; Kelley, Michael J.

doi:10.1016/j.polymer.2005.05.135

Cited by 51 publications

(32 citation statements)

References 35 publications

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“…Based Table III. on these observations, it is likely that the modification mechanisms are mainly ion bombardment, which was suggested earlier, and UV radiation, which can also affect the PET [40]. Further experiments are underway to utilize an optical spectroscopy technique to identify these modifications in PET postdeposition as a function of thickness.…”

Section: Discussionmentioning

confidence: 80%

Dielectric Response of Tantalum Oxide Deposited on Polyethylene Terephthalate (PET) Film by Low-Temperature Pulsed-DC Sputtering for Wound Capacitors

Sethi

Sahul

Min

et al. 2009

IEEE Trans. Comp. Packag. Technol.

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Deposition of high-k tantalum oxide thin films on thin polymer substrates was investigated, using lowtemperature (−100°C) pulsed-dc reactive sputtering. Degradation of two different polymers, polyethylene terephthalate (PET) and polypropylene (PP), were studied as a function of sputtering conditions. Two different deposition configurations have been explored for polymer films with aluminum electrode on one side. In one configuration, tantalum oxide was deposited on the nonelectroded side of the polymer, while in the other the deposition was on the electroded side of the polymer. The two fabricated structures have been characterized for dielectric permittivity, loss, and ac conductivity as a function of frequency and temperature. Sputtering tantalum oxide on the nonelectroded side of PET substrates results in a 37% higher permittivity for PET than the series model prediction of permittivity. Higher dielectric loss and ac conductivity accompany the higher permittivity. The α bulk relaxation in PET moves to slightly higher temperatures, indicating that there is an increase in the crystallinity of the bulk polymer. This observation is supported by the broader glass transition and an additional endothermic peak around 200°C in PET/Ta 2 O 5 compared to neat PET. In addition, modifications of the space charge activation energy in PET from 1.35 eV to 1.82 eV and of dc conductivity in PET from 6×10 −15 S/m to 4×10 −14 S/m is observed. Sputtering Ta 2 O 5 on the electroded side of the PET, under the same sputtering conditions, results in the formation of high-k tantalum oxide with dielectric permittivity,

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Section: Discussionmentioning

confidence: 80%

Dielectric Response of Tantalum Oxide Deposited on Polyethylene Terephthalate (PET) Film by Low-Temperature Pulsed-DC Sputtering for Wound Capacitors

Sethi

Sahul

Min

et al. 2009

IEEE Trans. Comp. Packag. Technol.

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“…positron annihilation spectroscopy (PAS), infrared (IR) spectroscopy and X-ray diffraction (XRD) that are employed to characterize the effect of ion-irradiation and etching in polymeric membranes (Singh et al, 2003(Singh et al, , 2008Zhu and Kelley, 2005;Sun et al, 2003;Hsu and Hadely, 1971;Suzuki et al, 1992;Kobayashi et al, 1995;Dlubek et al, 2000;Saito et al, 2007). The sensitivity of these techniques to the changes in the polymer microstructure varies.…”

Section: Introductionmentioning

confidence: 99%

Modification of microstructure of the surface and the bulk in ion-irradiated membrane studied using positron annihilation spectroscopy

Sharma

Maheshwari

Dutta

et al. 2010

Radiation Physics and Chemistry

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“…A photo-yellowing of the PET polymer occurs leading to the deterioration of its physical properties [10][11][12][13][14][15][16][17], so it should be protected. Among the methods to photo-stabilise the PET efficiently, the covering of its surface by a thin ceramic layer of zinc oxide is a very suitable one.…”

Section: Introductionmentioning

confidence: 99%

XPS characterisation of plasma treated and zinc oxide coated PET

Amor¹,

Jacquet

Fioux

et al. 2009

Applied Surface Science

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IR spectroscopic investigation of the effect of deep UV irradiation on PET films

Cited by 51 publications

References 35 publications

Dielectric Response of Tantalum Oxide Deposited on Polyethylene Terephthalate (PET) Film by Low-Temperature Pulsed-DC Sputtering for Wound Capacitors

Dielectric Response of Tantalum Oxide Deposited on Polyethylene Terephthalate (PET) Film by Low-Temperature Pulsed-DC Sputtering for Wound Capacitors

Modification of microstructure of the surface and the bulk in ion-irradiated membrane studied using positron annihilation spectroscopy

XPS characterisation of plasma treated and zinc oxide coated PET

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