Oxidation of Polystyrene and Pyrolytic Carbon Surfaces by Radiofrequency Glow Discharge

Iwamoto, Gary K.; King, R. N.; Andrade, J. D.

doi:10.1021/bk-1981-0162.ch024

Cited by 4 publications

(1 citation statement)

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“…The water contact angle obtained for these surfaces, as a function of time is shown in Fig. An alternative method of determining the effect of water on surface polarity is to use inverse contact angles, e.g., measuring the contact of a bubble of air on the underside of a surface immersed in water as opposed [228,229] to the normal technique in which the angle of a bubble of water on top of a surface immersed in air is obtained. It is clear that the decay in surface polarity is greatest for the conventional polymer, less for plasma polymerized propylene, which is highly crosslinked, and negligible for the extremely high crosslinked plasma polymerized methane surface.…”

Section: Contact Anglementioning

confidence: 99%

An Introduction to Plasma Polymerization

Morosoff

1990

Plasma Deposition, Treatment, and Etching of Polymers

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Section: Contact Anglementioning

confidence: 99%

An Introduction to Plasma Polymerization

Morosoff

1990

Plasma Deposition, Treatment, and Etching of Polymers

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Surface modification and evaluation of some commonly used catheter materials. I. Surface properties

Triolo

Andrade

1983

J. Biomed. Mater. Res.

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Double catheter systems consisting of a stiff outer catheter and a flexible, buoyant, flow-directed, inner catheter which is often balloon-tipped have been employed with increasing frequency recently in both therapeutic and diagnostic procedures. Their use, however, has been restricted because of the excessive friction generated between the two catheters. In an attempt to decrease friction between polymers commonly used as catheter materials, oxidation of polyethylene, fluorinated ethylene-propylene copolymer, poly(vinyl chloride), silicone rubber, and polystyrene surfaces was induced by exposing the polymers to radio frequency glow discharge (RFGD) in a helium environment. All polymers were surface characterized utilizing x-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and contact angle measurements before and after oxidation. This article describes the materials and methods used to fabricate and characterize the polymer surfaces and the results of the characterization. The results indicate that increases in oxygen concentration at the surface of the polymers and decreases in air-water contact angles occur with increased RFGD exposure time. Plateau values were usually obtained after 5-30 s exposure time, yet no apparent changes in surface topography were noted by scanning electron microscopy. The hydrophilic surfaces produced were stable for up to three months storage time in air.

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Blood-compatible polymers

Ikada

1984

Polymers in Medicine

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Oxidation of Polystyrene and Pyrolytic Carbon Surfaces by Radiofrequency Glow Discharge

Cited by 4 publications

References 0 publications

An Introduction to Plasma Polymerization

An Introduction to Plasma Polymerization

Surface modification and evaluation of some commonly used catheter materials. I. Surface properties

Blood-compatible polymers

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