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Reaction Chemistry of 1,4‐Benzopyrone Derivates in Non‐Equilibrium Low‐Temperature Plasmas
Author(s) -
Grzegorzewski Franziska,
Rohn Sascha,
Quade Antje,
Schröder Karsten,
Ehlbeck Jörg,
Schlüter Oliver,
Kroh Lothar W.
Publication year - 2010
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.200900140
Subject(s) - chemistry , plasma , oxygen , argon , degradation (telecommunications) , excitation , thermal , microwave , atmospheric pressure , nonthermal plasma , atmospheric pressure plasma , plasma cleaning , analytical chemistry (journal) , environmental chemistry , organic chemistry , thermodynamics , nuclear physics , physics , oceanography , quantum mechanics , geology , computer science , electrical engineering , engineering , telecommunications
1,4‐Benzopyrone derivates are exposed to different cold gas discharges. Reactions are carried out using different feed gases (argon, oxygen) and excitation sources (radio frequency, microwave) at both atmospheric and low pressure. A structure‐dependent degradation upon plasma‐chemical reactions can be observed. From contact‐angle measurements a strong surface oxidation is suggested. Independent of the source used plasma treatment leads to a significant increase in oxygen content of the samples through newly introduced carbonyl‐ and carboxyl‐functions. This is in agreement to results showing that during thermal food processes oxidative species lead to the formation of characteristic low‐molecular weight degradation products.