Insights in the initiation and termination of poly(alkyl acrylates) synthesized by atmospheric pressure plasma‐initiated chemical vapor deposition (AP‐PiCVD)
2018; Wiley; Volume: 15; Issue: 5 Linguagem: Inglês
10.1002/ppap.201800027
ISSN1612-8869
AutoresFrançois Loyer, Giuseppe Bengasi, Gilles Frache, Patrick Choquet, Nicolas D. Boscher,
Tópico(s)Ion-surface interactions and analysis
ResumoA comprehensive mass‐spectrometry study of a set of poly(alkyl acrylate) layers synthesized by atmospheric pressure plasma‐initiated chemical vapor deposition (AP‐PiCVD) is provided. High‐resolution mass spectrometry investigations demonstrate that exposure of the alkyl acrylate monomers to ultra‐short and low‐frequency plasma pulses produces a defined number of radical and neutral fragments, which can play both the roles of polymerization initiation or termination groups. Further inquiries illustrate the competition between a conventional free‐radical polymerization pathway and plasma‐polymerization. On the basis of the mass‐spectrometry observations and the bond dissociation energies calculated by density functional theory, guidelines are made to select appropriate AP‐PiCVD monomers.
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