Effect of Heat-Treatment on the Performance of Gas Barrier Layers Applied by Atomic Layer Deposition onto Polymer-Coated Paperboard

Terhi Hirvikorpi, Mika Vaha-Nissi*, Jari Vartiainen, Paavo Penttila, Juha Nikkola, Ali Harlin, Ritva Serimaa, Maarit Karppinen

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    10 Citations (Scopus)

    Abstract

    The effect of heat treatment on the gas barrier of the polymer-coated board further coated with an Al(2)O(3) layer by atomic layer deposition (ALD) was studied. Heat treatment below the melting point of the polymer followed by quenching at room temperature was used for the polylactide-coated board [B(PLA)], while over-the-melting-point treatment was utilized for the low-density polyethylene-coated board [B(PE)] followed by quenching at room temperature or in liquid nitrogen. Heat treatment of B(PLA) and B(PE) followed by quenching at room temperature improved the water vapor barrier. However, because of the changes in the polymer morphology, quenching of B(PE) with liquid nitrogen impaired the same barrier. No improvement in oxygen barrier was observed explained by, e. g., the spherulitic structure of PLA and the discontinuities and possible short-chain amorphous material around the spherulites forming passages for oxygen molecules. This work emphasizes the importance of a homogeneous surface prior to the ALD growth Al(2)O(3) barrier layer. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 122: 2221-2227, 2011

    Original languageEnglish
    Pages (from-to)2221-2227
    Number of pages7
    JournalJournal of Applied Polymer Science
    Volume122
    Issue number4
    DOIs
    Publication statusPublished - 15 Nov 2011
    MoE publication typeA1 Journal article-refereed

    Keywords

    • barrier
    • gas permeation
    • morphology
    • nanolayers
    • thin films
    • X-RAY
    • DENSITY POLYETHYLENE
    • CRYSTALLINITY
    • NANOCOMPOSITES
    • MORPHOLOGY
    • COATINGS
    • SURFACE
    • VAPOR
    • FILMS

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