Modification of polymers with UV excimer radiation from lasers and lamps

Zhang, Junying; Esrom, Hilmar; Kogelschatz, U.; Emig, G.

doi:10.1163/156856194x01022

Cited by 81 publications

(40 citation statements)

References 44 publications

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“…Indeed, the FTIR spectra suggested a decrease of CH 3 and an increase of C-O, indicating therefore a degradation of the polymer chain 15) and the existence of LMWO 19) . In the same vein, the yellowish appearance of the specimens after 24-hour UV irradiation complemented the suggestion of chemical changes at the specimen surface 21) . Taken together, these results strongly implied a decomposition or degradation of the resin surface.…”

Section: Fig 4 Effects Of Uv Irradiation Time On Contact Angle ( °)mentioning

confidence: 52%

“…They can cause molecular bonds to be broken when absorbed in a molecule, a process referred to as photolytic chain scission 14) . The use of ultraviolet (UV) irradiation on the surface of polymers such as poly(dimethyl siloxane) [15][16][17] , polypropylene [18][19][20] , and poly(ethylene terephthalate) 18,21) have been studied in lithography and microelectronics. In terms of advantages, UV irradiation can improve the adhesive property of coatings as well as wettability and printability of polymers by changing the morphology and chemical properties of the polymer surface.…”

Section: Introductionmentioning

confidence: 99%

“…By means of Fourier transform infrared spectroscopy (FTIR), photolytic chain scission, formation of different functional groups, and degradation of polymer backbone have been observed 15,19) . By means of X-ray photoelectron spectroscopy (XPS), changes in chemical bonding energy have been detected 16,18,19,21) . Then, by means of contact angle measurement, changes in surface hydrophobicity have been monitored 15,16,18,19) .…”

Section: Introductionmentioning

confidence: 99%

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Effect of Ultraviolet Light Irradiation on Bonding of Experimental Composite Resin Artificial Teeth

et al. 2007

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The purpose of the present study was to evaluate how ultraviolet light (UV) irradiation using an ordinary UV sterilizer would affect the bonding of experimental composite resins to an autopolymerizing acrylic resin. To this end, three composite resins and one unfilled resin -of which the compositions were similar to commercial composite resin artificial teeth -were prepared as repair composites. Their shear bond strengths after UV irradiation for one to 60 minutes were significantly greater than those before UV irradiation regardless of composite resin type. Failure mode after UV irradiation for one to 60 minutes was mainly cohesive failure of the composite resins, but that before UV irradiation and after 24 hours' irradiation was mainly adhesive failure. These results thus suggested that a short period of UV irradiation on composite resin teeth would improve the bonding efficacy of composite resin artificial teeth to autopolymerizing resin.

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Section: Fig 4 Effects Of Uv Irradiation Time On Contact Angle ( °)mentioning

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Ultraviolet Light Irradiation on Bonding of Experimental Composite Resin Artificial Teeth

et al. 2007

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“…A moderately intense source operating over large areas in a continuous manner may prove just as useful, if not more so. Some pilot studies have already been performed to modify surfaces and deposit thin films using excimer generated UV radiation from dielectric barrier discharges (Esrom and Kogelschatz 1992;Bergonzo et al 1993;Bergonzo and Boyd 1993;Manfredotti et al 1993;Zhang et al 1993Zhang et al , 1994. The dielectric barrier discharge sources used in these studies.…”

Section: Practical Applications Of Dielectric Barrier Dischargesmentioning

confidence: 99%

The Dielectric Barrier Discharge: A Bright Spark for Australia's Future

Newman¹,

Brennan²

1995

Aust. J. Phys.

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A dielectric barrier or silent discharge is the name given to a transient gas discharge occurring between two electrodes separated by one or two layers of dielectric material. They have formed the basis of commercial ozonisers for nearly a century but, despite the maturity of this technology, significant experimental and theoretical questions remain to be answered about the operation of these discharges before they can be fully exploited in new applications. Of particular interest is the potential that dielectric barrier discharges display for development as sources of intense, monochromatic, incoherent UV/VUV radiation. This paper briefly outlines the current status of the field with regard to research into the operation and UV/VUV radiative spectroscopy of dielectric barrier discharges. Some applications of these sources are briefly discussed and some of the theoretical models proposed to explain their operation are outlined. The paper concludes with a summary and outlook of the experimental and theoretical project that is being set up under a collaborative venture by CQ U and ANU to study dielectric barrier discharges.

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“…[2][3][4][5][6][7][8][9][10] Among plasma treatments, especially, dielectric barrier discharge (DBD) or corona discharge in air at atmospheric pressure easily changed the PI surface to hydrophilic with simple system, low cost, and green process.…”

Section: Introductionmentioning

confidence: 99%

Adhesion Improvement of Polyimide/Metal Interface by He/O₂/NF₃ Atmospheric Pressure Plasma

Lee

Kim

2009

Plasma Processes & Polymers

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The surface of polyimide (PI) was modified with He/O2/NF3 dielectric barrier discharge generated by 13.56 MHz r.f. at atmospheric pressure in order to improve adhesion between metal (Cu/Cr) and PI. He/O2/NF3 plasma severely etched the surface of PI and formed many conical clusters of below 100 nm diameter on the PI surface. The surface roughness of PI was increased from 0.4 to 11 nm with r.f. power. X‐ray photoelectron spectroscopy (XPS) analysis showed that oxygen concentration was increased as much as the decrease of carbon concentration after plasma treatment. XPS analysis also showed that the component ratio of CO bonding, which is a hydrophilic functional group, was increased about 30% by the plasma treatment as compared with untreated PI. T‐peel test showed that peel strength was increased with r.f. power. The highest peel strength was 148 gf · nm−1, which was about 50 times as high as the peel strength obtained without plasma activation. It is more than two times as strong as the adhesion between the Cu/Cr film and PI substrate treated by O2 plasma. The surface morphology and chemical composition of the detached side of the PI treated by He/O2/NF3 plasma were similar to untreated PI.

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Modification of polymers with UV excimer radiation from lasers and lamps

Cited by 81 publications

References 44 publications

Effect of Ultraviolet Light Irradiation on Bonding of Experimental Composite Resin Artificial Teeth

Effect of Ultraviolet Light Irradiation on Bonding of Experimental Composite Resin Artificial Teeth

The Dielectric Barrier Discharge: A Bright Spark for Australia's Future

Adhesion Improvement of Polyimide/Metal Interface by He/O₂/NF₃ Atmospheric Pressure Plasma

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Modification of polymers with UV excimer radiation from lasers and lamps

Cited by 81 publications

References 44 publications

Effect of Ultraviolet Light Irradiation on Bonding of Experimental Composite Resin Artificial Teeth

Effect of Ultraviolet Light Irradiation on Bonding of Experimental Composite Resin Artificial Teeth

The Dielectric Barrier Discharge: A Bright Spark for Australia's Future

Adhesion Improvement of Polyimide/Metal Interface by He/O2/NF3 Atmospheric Pressure Plasma

Contact Info

Product

Resources

About

Adhesion Improvement of Polyimide/Metal Interface by He/O₂/NF₃ Atmospheric Pressure Plasma