UV–ozone induced growth of a SiOx surface layer on a cross-linked polysiloxane film: characterization and gas separation properties

Ouyang, Meng; Muisener, R. J.; Boulares, and A.; Koberstein, Jeffrey T.

doi:10.1016/s0376-7388(00)00471-3

Cited by 66 publications

(57 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The patterns could, however, be made permanent by a UV-ozone treatment for 20 min. UV irradiation at 185 nm produces ozone from atmospheric oxygen, which further gets dissociated to atomic oxygen at 254 nm irradiation (Ouyang et al 2000). This atomic species reacts with the siloxane group, releasing volatile products and leaving behind a stiff surface layer consisting of oxides of silicon.…”

Section: 6amentioning

confidence: 99%

Soft lithography meets self-organization: Some new developments in meso-patterning

et al. 2008

View full text Add to dashboard Cite

This is a brief review of our recent and ongoing work on simple, rapid, room temperature, pressure-less and large area (~ cm 2 ) imprinting techniques for high fidelity meso-patterning of different types of polymer films. Examples include soft solid polymer films and surfaces like cross-linked polydimethylsiloxane (PDMS) and polyacrylamide (PAA) based hydrogels, thermoplastics like polystyrene (PS), polymethylmethacrylate (PMMA) etc both on planar and curved surfaces. These techniques address two key issues in imprinting: (i) attainment of large area conformal contact with the stamp, especially on curved surfaces, and (ii) ease of stamp detachment without damage to the imprinted structures. The key element of the method is the use of thin and flexible patterned foils that readily and rapidly come into complete conformal contact with soft polymer surfaces because of adhesive interfacial interactions. The conformal contact is established at all length scales by bending of the foil at scales larger than the feature size, in conjunction with the spontaneous deformations of the film surface on the scale of the features. Complex two-dimensional patterns could also be formed even by using a simple one-dimensional master by multiple imprinting. The technique can be particularly useful for the bulk nano applications requiring routine fabrication of templates, for example, in the study of confined chemistry phenomena, nanofluidics, bio-MEMS, micro-imprinting, optical coatings and controlled dewetting.

show abstract

Section: 6amentioning

confidence: 99%

Soft lithography meets self-organization: Some new developments in meso-patterning

et al. 2008

View full text Add to dashboard Cite

show abstract

“…Recently, the hydration of a commercial ion-exchange membrane, Nafion, was studied with two complementary techniques: AFM and smallangle X-ray scattering; both techniques indicated that the number density of ionic clusters changes as a function of water content (22,23). On the other hand, the combined use of XPS and AFM allows the characterization of porous Nylon membranes coated with a crosslinked polysiloxane and modified by exposure to ultraviolet light (24); both techniques were also applied to study purple membranes deposited on gold (25).…”

Section: Introductionmentioning

confidence: 99%

Effect of Hydration of Polyamide Membranes on the Surface Electrokinetic Parameters: Surface Characterization by X-Ray Photoelectronic Spectroscopy and Atomic Force Microscopy

Ariza

Benavente

Rodríguez‐Castellón

et al. 2002

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

“…and 1006 cm -1 [30][31][32][33][34][35]. Additionally, the δ S-C band at 894 cm -1 was likely overlapped by the V CF3…”

Section: Elastomers With Fluorosilicone Chemistry (Fsr)mentioning

confidence: 97%

Degradation of different elastomeric polymers in simulated geothermal environments at 300 °C

Sugama

Pyatina

Redline

et al. 2015

Polymer Degradation and Stability

View full text Add to dashboard Cite

This study evaluates the degradation of six different elastomeric polymers used for O-rings: EPDM, FEPM, type I-and II-FKM, FFKM, and FSR, in five different simulated geothermal environments at 300°C: 1) non-aerated steam/cooling cycles, 2) aerated steam/cooling cycles, 3)water-based drilling fluid, 4) CO 2 -rich geo-brine fluid, and, 5) heat-cool water quenching cycles.The factors assessed included the extent of oxidation, changes in thermal behavior, microdefects, permeation of ionic species from the test environments into the O-rings, silicate-related scale-deposition, and changes in the O-rings' inverse tensile compliance.The reliability of the O-ring to maintain its integrity depended on the elastomeric polymer composition and the exposure environment. FSR disintegrated while EPDM was oxidized only to some degree in all the environments, FKM withstood heat-water quenching but underwent chemical degradation, FEPM survived in all the environments with the exception of heat-water quenching where it underwent severe oxidation-induced degradation, and FFKM displayed outstanding compatibility with all the tested environments. The paper discusses the degradation mechanisms of the polymers under the aforementioned conditions.

show abstract

UV–ozone induced growth of a SiOx surface layer on a cross-linked polysiloxane film: characterization and gas separation properties

Cited by 66 publications

References 17 publications

Soft lithography meets self-organization: Some new developments in meso-patterning

Soft lithography meets self-organization: Some new developments in meso-patterning

Effect of Hydration of Polyamide Membranes on the Surface Electrokinetic Parameters: Surface Characterization by X-Ray Photoelectronic Spectroscopy and Atomic Force Microscopy

Degradation of different elastomeric polymers in simulated geothermal environments at 300 °C

Contact Info

Product

Resources

About