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Barrier properties of organic-inorganic hybrid coatings based on polyvinyl alcohol with improved water resistance
- Source :
- Polymer Engineering & Science. 50:144-153
- Publication Year :
- 2009
- Publisher :
- Wiley, 2009.
-
Abstract
- A comprehensive study of the gas barrier properties of hybrid organic–inorganic coatings formed by polyvinyl alcohol (PVOH) and Si-SiO2, obtained via sol–gel technique, was carried out. It has been shown that the oxygen, nitrogen and carbon dioxide transfer rates of barrier polymers such as poly(ethylene terephthalate) and oriented polypropylene can be further reduced, by up to two orders of magnitude, with a thin coating (1–2 μm) of PVOH/Si-SiO2. More notably, it has been observed that the material maintains this feature even after a prolonged contact with water, which is a strong solvent for PVOH. Direct moisture sorption measurements show that silica lowers the water uptake of PVOH and inhibits sorption-induced swelling and plasticization of the polymer. Correlations between the gas transport properties of the hybrid coatings and factors such as the silica content, the type of polymeric substrate, the nature of penetrant and the temperature have been found, providing guidelines for the selection and design of multilayer materials for packaging applications. POLYM. ENG. SCI., 2010. © 2009 Society of Plastics Engineers
- Subjects :
- Polypropylene
chemistry.chemical_classification
ORGANIC/INORGANIC HYBRID
Materials science
Nanocomposite
Polymers and Plastics
Plasticizer
Concentration effect
General Chemistry
Polymer
engineering.material
NANOCOMPOSITE
Polyvinyl alcohol
chemistry.chemical_compound
chemistry
Coating
Chemical engineering
Polymer chemistry
Materials Chemistry
engineering
BARRIER PROPERTIES
PERMEABILITY
POLYVINYL ALCOHOL
Hybrid material
Subjects
Details
- ISSN :
- 00323888
- Volume :
- 50
- Database :
- OpenAIRE
- Journal :
- Polymer Engineering & Science
- Accession number :
- edsair.doi.dedup.....a8a23097249eeff3eb4a483ba197b398