Novel method for quantitative starch penetration analysis through iodine staining and image analysis of cross-sections of uncoated paper and board

Timo Lappalainen, Juha Lipponen, Tiina Solasaari

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    This paper presents a novel method for determining quantified starch penetration information from surface-sized fine paper and linerboard through image analysis of a number of iodine stained cross sections. The challenges were especially the variation of the penetration information in individual cross sections and the large, unknown and varied amount of base sheet starch in the linerboard specimens. The numerical penetration information obtained was used in further processing, such as determining a dimensionless penetration number Q. This penetration number can be used in characterizing penetration-related paper properties to help in the optimization of starch penetration-related papermaking process parameters. The penetration information was also processed to present a starch amount distribution in the z-direction, defined here as a Simulated Starch Content (SSC) distribution to give a good estimate of the actual starch distribution across the z-direction. The method developed in this work is fast and it will give quantitative and comparable information on starch penetration. The complete procedure was defined in detail from the handling and iodine staining of the specimens to the microscopic photographing of the cross-sections and computational image analysis of the cross-sectional images.
    Original languageEnglish
    Title of host publication2005 TAPPI Coating Conference and Exhibition
    PublisherTAPPI Press
    Pages57-74
    ISBN (Print)978-1-59510-085-6, 1-59510-085-7
    Publication statusPublished - 2005
    MoE publication typeA4 Article in a conference publication
    EventTAPPI Coating Conference and Exhibit 2005 - Toronto, Canada
    Duration: 17 Apr 200520 Apr 2005

    Conference

    ConferenceTAPPI Coating Conference and Exhibit 2005
    CountryCanada
    CityToronto
    Period17/04/0520/04/05

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    Keywords

    • biopolymers

    Cite this

    Lappalainen, T., Lipponen, J., & Solasaari, T. (2005). Novel method for quantitative starch penetration analysis through iodine staining and image analysis of cross-sections of uncoated paper and board. In 2005 TAPPI Coating Conference and Exhibition (pp. 57-74). TAPPI Press.