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Atmospheric Plasma Surface Modification of PMMA and PP Micro‐Particles
Author(s) -
Gilliam Mary,
Farhat Susan,
Zand Ali,
Stubbs Barrack,
Magyar Michael,
Garner Graham
Publication year - 2014
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.201300087
Subject(s) - x ray photoelectron spectroscopy , contact angle , polypropylene , surface modification , materials science , surface energy , oxygen , analytical chemistry (journal) , atmospheric pressure plasma , atmospheric pressure , nitrogen , plasma , chemical engineering , composite material , chemistry , chromatography , organic chemistry , physics , engineering , oceanography , quantum mechanics , geology
Chemical surface modification of polymethylmethacrylate (PMMA) and polypropylene (PP) particles was achieved using a continuous atmospheric plasma process, resulting in increased oxidation and hydrophilicity. Contact angles of treated PMMA ranged from 79–117° (125° for untreated). Air plasma produced higher contact angles than pure nitrogen, which is attributed to primary surface degradation from oxygen. Higher energy and flow rate of water resulted in decreased contact angles. Treated PP mixed in water upon agitation, while untreated PP remained at the surface. X‐ray photoelectron spectroscopy (XPS) showed increased CO and CO for treated samples. The addition of 10% hydroxyethylmethacrylate (HEMA) to water showed a slight decrease in contact angle, but no difference from pure water in XPS results.