2008•Unpublished venueRequires access
Barrier properties of polypropylene nonwoven with TiO2 coating
Renata Szabová, Magdaléna Wolfová, Ľudmila Černáková, Mirko Černák, Anna Ujhelyiová
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Abstract
This study was undertaken to investigate the barrier properties
of polypropylene nonwoven (PPNW) coated with TiO2
nano-particles. The coatings are based on highly
photo-catalytically active nanoscaled titania powders. The
surface of PPNW samples were activated by an
atmospheric-pressure plasma treatment in N2 or ambient air.
Consequently the surface of polypropylene textiles was coated
with TiO2 nano-particles from water dispersion in concentration
5g/1. The TiO2 modified polypropylene nonwoven were analysed by
FTIR spectroscopy and SEM microscopy. Measurements of barrier
properties were carried out in accordance with the draft
standard EN 13758-1. We compared the standard polypropylene
nonwoven. polypropylene nonwoven with TiO2 coating and and
polypropylene nonwoven with TiO 2 coating after washing in
distilled water. It was found that high amount of TiO2 was
removed by washing in distilled water. The samples coated with
TiO2 have 2,5-3 times better barrier properties than standard
polypropylene nonwoven.