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The influence of mo...
The influence of moisture content on the polymer structure of polyvinyl alcohol in dispersion barrier coatings and its effect on the mass transport of oxygen
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- Nyflött, Åsa, 1986- (författare)
- Karlstads universitet,Institutionen för ingenjörs- och kemivetenskaper (from 2013)
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- Meriçer, Çağlar (författare)
- Bologna University
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- Minelli, Matteo (författare)
- Bologna University
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- Moons, Ellen, professor, 1966- (författare)
- Karlstads universitet,Institutionen för ingenjörsvetenskap och fysik (from 2013),Materialvetenskap
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- Jarnstrom, Lars, 1954- (författare)
- Karlstads universitet,Institutionen för ingenjörs- och kemivetenskaper (from 2013)
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- Lestelius, Magnus, 1968- (författare)
- Karlstads universitet,Institutionen för ingenjörs- och kemivetenskaper (from 2013)
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- Giacinti Baschetti, Marco (författare)
- Bologna University
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(creator_code:org_t)
- 2017-06-29
- 2017
- Engelska.
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Ingår i: JCT Research. - : Springer. - 1547-0091 .- 2168-8028. ; , s. 1345-1355
- Relaterad länk:
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https://doi.org/10.1...
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https://kau.diva-por... (primary) (Raw object)
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https://link.springe...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- This paper presents a study of the effect of moisture on the gas permeability of polyvinyl alcohol (PVOH) and PVOH–kaolin dispersion barrier coatings. The oxygen permeability was measured at different humidity levels, and the material properties were characterized under the same conditions: polymer crystallinity, kaolin concentration, and kaolin orientation were all evaluated. The experimental results revealed that the water plasticizes the PVOH material of the coatings, and the presence of kaolin filler is unable to affect such behavior significantly. The PVOH crystallinity was affected drastically by the humidity, as water melts polymer crystallites, which is a reversible process under removal of water. The permeability data were analyzed using a thermodynamicbased model able to account for the water effect on both the solubility of the gas and the diffusivity coefficients in the polymer and composite. The results showed good agreement between the model’s predictions and the experimental data in terms of the overall permeability of the material.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Polymerteknologi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Polymer Technologies (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Kompositmaterial och -teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Composite Science and Engineering (hsv//eng)
Nyckelord
- Mass transport
- Permeability
- Modeling
- Barrier coating
- Moisture
- Kaolin
- PVOH
- Kemiteknik
- Chemical Engineering
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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