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Gas barrier properties of plasma-deposited coatings: Substrate effects
2000 (English)In: Polymer Surface Modification: Relevance to Adhesion / [ed] Mittal, K., VSP International Science Publishers, 2000, 575-603 p.Chapter in book (Refereed)
Abstract [en]

Plasma deposition of ultra-thin, glasslike SiOx high gas barrier coatings on conventional packaging materials such as polyethylene terphthalate (PET), oriented polypropylene (OPP) and low density polyethylene (LDPE) films has been investigated. In particular, the influence of the polymer film substrate on the gas barrier properties has been examined. It is obvious that the surface roughness in combination with the gas permeability of the polymer film substrate, is the most important parameter and determines the level of oxygen transmission rates (OTR). The roughness of the films increases in the following order: PET<OPP<LDPE and so does the corresponding OTR after deposition of the SiOx coating. The LDPE substrate was found to be more sensitive than the PET and OPP. The influence of various plasma parameters, such as discharge power, HMDSO:O2-ratio, pressure, deposition time, pretreatments, etc. has also been investigated. Careful optimization of the plasma parameters is required since improper parameter settings will lead to poor barrier performance of the SiOx coatings.

Place, publisher, year, edition, pages
VSP International Science Publishers, 2000. 575-603 p.
Keyword [en]
Plasma-deposited SiOx coatings; gas barrier; OTR; PET; OPP; LDPE; plasma parameters; AFM; E-SEM, mechanical properties; surface roughness
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-13558OAI: oai:DiVA.org:ri-13558DiVA: diva2:975205
Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2016-09-29Bibliographically approved

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