Combined mechanical and chemical modifications towards super-stretchable paper-based materials

Alexey Khakalo, Jarmo Kouko, Ilari Filpponen, Elias Retulainen, Orlando J. Rojas

    Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsScientific

    Abstract

    Paper-based packaging materials have sparked a growing interest due to their biodegradability, recyclability and renewability. One of the main factors limiting the use of paper-based packaging materials is their somewhat poor extensibility which in turn has detrimental effects for the final shaping properties of the material. However, this problem might be solved by combining facile chemical treatment of fibers and modification of fiber network structure. In this study, bio-based water dispersions were introduced onto cellulose fibers followed by in-plane compaction of paper handsheets. The mechanical properties of the resulting composites were investigated by using tensile tester, dynamic mechanical analysis (DMA) and 2D formability tester. For example, such treatment of a paper handsheet increased its ductile properties (up to 20% elongation at break) even with moderate polymer addition (up to 4 wt.%based on fiber dry mass). Moreover, despite induced deformations tensile strength index improved by 30% (up to 67 Nm/g). Finally, most promising samples were converted in press forming experiments with fixed blank. Main results and possible applications for the developed composite materials will be discussed.
    Original languageEnglish
    Title of host publicationBook of abstracts
    Publication statusPublished - 2016
    EventConcreso Iberoamericano De Investigacion En Celulosa Y Paperl - Iberoamerican Congress on Pulp and Paper Research, CIADICYP 2016: IX Iberoamerican Congress on Pulp and Paper Research - Espoo, Finland
    Duration: 4 Sep 20168 Sep 2016

    Conference

    ConferenceConcreso Iberoamericano De Investigacion En Celulosa Y Paperl - Iberoamerican Congress on Pulp and Paper Research, CIADICYP 2016
    Abbreviated titleCIADICYP 2016
    Country/TerritoryFinland
    CityEspoo
    Period4/09/168/09/16

    Keywords

    • stretch
    • ductility
    • mechanical modification
    • chemical modification

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