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Polymer Powder Treatment in Atmospheric Pressure Plasma Circulating Fluidized Bed Reactor
Author(s) -
Oberbossel Gina,
Güntner Andreas Thomas,
Kündig Lukas,
Roth Christian,
Rudolf von Rohr Philipp
Publication year - 2015
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.201400124
Subject(s) - materials science , atmospheric pressure , atmospheric pressure plasma , fluidized bed , plasma , polyethylene , polymer , argon , particle (ecology) , dielectric barrier discharge , low density polyethylene , particle size , composite material , chemical engineering , analytical chemistry (journal) , dielectric , chromatography , chemistry , organic chemistry , optoelectronics , oceanography , physics , quantum mechanics , engineering , geology
The surface activation of high‐density polyethylene powder using a remote plasma process at atmospheric pressure is investigated. The developed circulating fluidized bed plasma reactor enables to carry fine‐grained powder particles repetitively through the afterglow of 64 dielectric barrier discharges of argon with O 2 and CO 2 admixtures. The evolution of particle size distribution during conveying in the reactor is monitored by laser diffraction and reveals that only a small particle fraction is lost during the process. The contact angle of activated powder samples steadily decreases with increasing treatment time. The surface activation is most effective for O 2 admixtures of 0.25 vol% and CO 2 admixtures of above approximately 1 vol%, respectively.