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Insights in the Architecture of Silicon-Based Plasma Polymers Using Partial Network Ethanolysis Combined with Electrospray Tandem Mass Spectrometry
Ist Teil von
Plasma processes and polymers, 2013-03, Vol.10 (3), p.271-284
Ort / Verlag
Weinheim: WILEY-VCH Verlag
Erscheinungsjahr
2013
Link zum Volltext
Quelle
Wiley Online Library
Beschreibungen/Notizen
Thin films obtained upon plasma polymerization of D4 and HMDSO precursors at atmospheric pressure are submitted to controlled ethanolysis to produce oligomers amenable to electrospray mass spectrometry. When using high resolution mass spectrometry to assess their elemental composition and tandem mass spectrometry to characterize their end‐groups, a whole set of ethanolysis products is identified, from which the network connectivity in the original film can be reconstructed. Ethanolysis products of ppD4 and ppHMDSO exhibit the same structural features composed of linear and cross‐linked PDMS moieties, the extent of cross‐linking reflecting the inorganic character of the film. Oligomers originally embedded in the solid network and released as intact species upon its dissolution are also observed.
Detailed mass spectrometry characterization of soluble PDMS oligomers generated upon controlled ethanolysis of ppD4 and ppHMDSO thin films allowed the reconstruction of the network connectivity in the original films. Since the studied films were produced by atmospheric pressure plasma polymerization, the results presented here offer new insights in the architecture of plasma polymers.