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Energetics of reactions in a dielectric barrier discharge with argon carrier gas: VII anhydrides
The method developed for fundamental understanding of energetic exchanges between monomer molecules and argon carrier gas in a dielectric barrier discharge (DBD) has previously proven merit. In this seventh article related to this methodology, research has been extended to a new family of precursors...
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Published in: | Plasma processes and polymers 2019-05, Vol.16 (5), p.n/a |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | The method developed for fundamental understanding of energetic exchanges between monomer molecules and argon carrier gas in a dielectric barrier discharge (DBD) has previously proven merit. In this seventh article related to this methodology, research has been extended to a new family of precursors: anhydrides. Monomers (typically ‰) were mixed with 10 slm of Ar in a 20 kHz, 8 kV (peak‐to‐peak) DBD corresponding to an energy per cycle of 1600 μJ for pure Ar. For each of the investigated monomers Em, the energy absorbed per molecule was plotted as a function of precursor flow rate. The influence of chemical structure (C/O ratio, unsaturation) has been investigated and compared with previous data for other types of precursors. Thin plasma polymer coatings were deposited; in addition to measuring deposition rates, we also present relationships between Em values, spectro‐ellipsometric and FTIR measurements.
Dielectric barrier discharge experiments at atmospheric pressure with argon carrier gas and various anhydride monomers have been used to measure the energy absorbed from the plasma by each monomer molecule. The influence of the C/O ratio and the presence of double bonds in the injected precursor on the fragmentation and polymerization processes in the DBD reactor is reported. |
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ISSN: | 1612-8850 1612-8869 |
DOI: | 10.1002/ppap.201800186 |