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Treatment of PET nonwoven with a water vapor or carbon dioxide plasma
Author(s) -
Klomp A. J. A.,
Terlingen J. G. A.,
Takens G. A. J.,
Strikker A.,
Engbers G. H. M.,
Feijen J.
Publication year - 2000
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(20000124)75:4<480::aid-app3>3.0.co;2-9
Subject(s) - glow discharge , x ray photoelectron spectroscopy , titration , contact angle , surface modification , substrate (aquarium) , analytical chemistry (journal) , oxygen , materials science , water vapor , chemistry , carboxylic acid , layer (electronics) , ethylene , plasma , polymer chemistry , chemical engineering , nanotechnology , chromatography , composite material , inorganic chemistry , organic chemistry , catalysis , physics , oceanography , quantum mechanics , engineering , geology
Gas plasma treatment of poly(ethylene terephthalate) nonwoven (NW–PET) was used to increase the hydrophilicity of single‐ and multilayer NW–PET. NW–PET was treated with a pulsatile CO 2 or with a pulsatile H 2 O glow discharge. X‐ray photoelectron spectroscopy (XPS) showed significantly more oxygen with CO 2 glow‐discharge‐treated NW–PET than with H 2 O glow‐discharge‐treated‐NW–PET surfaces. Moreover, the introduction rate of oxygen at a single layer of NW–PET was higher for a CO 2 than for a H 2 O glow‐discharge treatment. Titration data revealed significantly higher surface concentrations of carboxylic groups for CO 2 glow‐discharge NW–PET than for H 2 O glow‐discharge‐treated NW–PET. Mass spectrometry analysis revealed that the entire internal surface of a single layer of NW–PET was modified. XPS and contact measurements confirmed the modification of the internal surface of multilayers of NW–PET. H 2 O and CO 2 glow‐discharge‐treated substrates consisting of six layers of NW–PET had a nonuniform surface concentration of carboxylic acid groups as determined with titration experiments. The outside layers of the substrate contained a higher surface concentration of carboxylic acid groups than did the inside layers. XPS analysis and titration data showed that the rinsing of H 2 O and CO 2 glow‐discharge‐treated NW–PET with water changed the surface composition considerably. Part of the carboxylic acid group‐containing species were washed off. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 75: 480–494, 2000