Spectroscopic methods for determination of latex content of coating layers

E. Kenttä, K. Juvonen, M. Halttunen, J. Vyörykkä

    Research output: Contribution to journalReview ArticleScientificpeer-review

    31 Citations (Scopus)
    47 Downloads (Pure)

    Abstract

    IR, Raman and UV methods were used to determine latex contents throughout different coating layers. The chosen methods have surface sensitivities from 1 to 8 micrometers, and the z-directional resolution of IR and Raman techniques is adjustable in the range of coating layer thickness. The ATR-IR, UV and confocal Raman microscope measurements gave, with certain limitations, latex contents of between 3 and 18 parts in clay and carbonate coatings. A study of calibration coatings showed hoe changes in coating pigments interfere with latex determination. Changes in pigment particle size and particle shape cause differences in signal intensity, especially in UV measurements. Clay in coatings gives rise to fluorescence, which interferes with Raman analyses. The results of these measurements will be used to give information on latex migration in coated papers.

    Original languageEnglish
    Pages (from-to)579-585
    Number of pages7
    JournalNordic Pulp and Paper Research Journal
    Volume15
    Issue number5
    Publication statusPublished - 1 Dec 2000
    MoE publication typeA2 Review article in a scientific journal
    EventPaper and Coating Chemistry Symposium 2000 - Stockholm, Sweden
    Duration: 6 Jun 20008 Jun 2000

    Keywords

    • Analysis
    • Coated papers
    • Infrared spectroscopy
    • Latex
    • Migration
    • Raman spectroscopy
    • Ultraviolet spectroscopy

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