Determination of optimum glow discharge parameters based on ATR‐FTIR spectra

Nguyen, Linh Thi Truc; Sung, N. H.; Suh, Nam P.

doi:10.1002/pol.1980.130180805

Cited by 14 publications

(3 citation statements)

References 8 publications

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“…Transmission spectra showed no carbonyl band, but internal reflection spectra showed carbonyl bands at 1730 and 1640 cm'1 (FB5). FT-IR internal reflection spectra have been used to determine optimum glow discharge parameters for surface modification of low density polyethylene (FB6).…”

Section: (F) Polymer Applicationsmentioning

confidence: 99%

Review: Infrared Spectrometry

McDonald¹

1982

Anal. Chem.

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Section: (F) Polymer Applicationsmentioning

confidence: 99%

Review: Infrared Spectrometry

McDonald¹

1982

Anal. Chem.

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“…There are numerous forms of energy available for conducting surface and interfacial reactions. − Among them, microwave-energy-generated plasma appears to be an effective source for reacting monomeric molecules to elastomeric surfaces. − In particular, the opportunity of controlling surface reactions by changing reaction conditions are quite appealing methodologies. − In the previous studies, − we developed closed- and open-flow plasma reactors which allowed us to chemically bond imidazole molecules to cross-linked poly(dimethylsiloxane) (PDMS) surfaces when Ar microwave plasma was employed. Using attenuated total reflectance Fourier transform infrared (ATR FT-IR) spectroscopy, , quantitative analysis of imidazole reactions under open and closed reactor conditions was performed.…”

Section: Introductionmentioning

confidence: 99%

Effect of Discharge Gases on Microwave Plasma Reactions of Imidazole on Poly(dimethylsiloxane) Surfaces: Quantitative ATR FT-IR Spectroscopic Analysis

and

Urban

1999

Langmuir

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Although our recent studies revealed that under Ar microwave plasma conditions reactions of imidazole with poly(dimethylsiloxane) (PDMS) result in the formation of Si−CH2−imidazole species, the issue of the discharge gas effect on microwave plasma reactions remain unanswered. This study examines how these reactions in the presence of Ar, O2, and CO2 gases under microwave plasma conditions will affect surface reactions on PDMS in the presence of imidazole vapors. When Ar microwave plasma reaction conditions are employed, imidazole molecules react to the PDMS surface through hydrogen abstraction of the N−H bonds to form Si−CH2−imidazole and Si−CH2−CH3 linkages. When O2 microwave plasma reactions are conducted for 20 s or less discharge times, Si−O−imidazole and Si−O−CH3 species on the PDMS surface are formed. On the other hand, for discharge times above 20 s, the Si−O−CH3 linkages are converted to Si−O−CH2−imidazole entities as a result of hydrogen abstraction. The CO2 microwave plasma reactions in the presence of imidazole vapors result in the formation of Si−O−imidazole−CH3 species on the PDMS surface, followed by hydrogen abstraction, resulting in the formation of Si−O−imidazole−CH2· radicals, which react with subsequent imidazole molecules through the formation of CH2−N linkages. Similarly to the previous studies, quantitative ATR FT-IR surface analysis showed that the highest yields of imidazole reactions occur under O2 microwave plasma conditions. All experiments utilized in this study allowed surface analysis at 1.3 μm from the surface.

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“…The polymeric route to silicon carbide and silicon nitride ceramics is currently being developed. [1][2][3][4][5] In this process the controlled pyrolysis of suitable organometallic polymers leads to ceramic materials via soluble or fusible intermediates. In fact, industrial interest arises from these processable intermediates, which are required for special applications such as coatings, binders, or fibers.…”

Section: Introduction Scheme Imentioning

confidence: 99%