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Surface characterization of hydrophilic coating obtained by low‐pressure CH 4 O 2 plasma treatment on a polypropylene film
Author(s) -
López R.,
Sanchis R.,
García D.,
Fenollar O.,
Balart R.
Publication year - 2008
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/app.29324
Subject(s) - x ray photoelectron spectroscopy , polypropylene , coating , plasma enhanced chemical vapor deposition , materials science , plasma polymerization , chemical engineering , chemical vapor deposition , surface modification , polymerization , plasma , polymer chemistry , layer (electronics) , methane , analytical chemistry (journal) , nanotechnology , polymer , composite material , chemistry , organic chemistry , physics , quantum mechanics , engineering
The use of surface treatments at industrial level is generalized as they allow obtaining a wide variety of properties such as soft in the touch, hydrophilic behavior, and biocompatibility. The use of low‐pressure plasma techniques with organic gases or organic mixtures is an easy way to obtain surface coatings very small in depth through plasma‐polymerization processes that can be assimilated to a plasma‐enhanced chemical vapor deposition (PECVD) process. In this work, we have carried out a plasma‐polymerization process on a polypropylene (PP) film to obtain a hydrophilic coating. To obtain this, the film surface has been treated on a low‐pressure plasma reactor with a methane–oxygen mixture gas with a volume ratio of 80 : 20, respectively. The chemistry changes in the outermost layers of the deposited coating have been investigated with X‐ray photoelectron spectroscopy (XPS). The different processes that take part as a consequence of the interaction between the plasma gas species and the PP film surface mainly drive to the deposition of an organic layer, which is functionalized with oxygen‐based species as XPS study reveals. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009