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  • 1.
    Jönbrink, Anna Karin
    et al.
    RISE - Research Institutes of Sweden, Materials and Production, IVF.
    Kristinsdottir, Anna Runa
    RISE - Research Institutes of Sweden, Materials and Production, IVF.
    Johansson, E.
    Nyström, Birgitha
    RISE, Swerea, SICOMP.
    Sundgren, M.
    Nayström, P.
    Ekolyftet, en förstudie: hinder och möjligheter i företags arbete med hållbarhet i sin produktframtagning2013Report (Other academic)
  • 2.
    Jönbrink, Anna-Karin
    et al.
    RISE - Research Institutes of Sweden, Materials and Production, IVF.
    Kristinsdottir, Anna Runa
    RISE - Research Institutes of Sweden, Materials and Production, IVF.
    Roos, Sandra
    RISE - Research Institutes of Sweden, Materials and Production, IVF.
    Sundgren, Mats
    Johansson, Eva
    Nyström, Birgitha
    RISE, Swerea, SICOMP.
    Nayström, Peter
    Why use Ecodesign in the industry 2013?: A Survey regarding Barriers and Opportunities related to Ecodesign2013Conference paper (Other academic)
  • 3.
    Rozite, L.
    et al.
    Luleå University of Technology.
    Joffe, Roberts
    RISE, Swerea, SICOMP. Luleå University of Technology.
    Varna, J.
    Luleå University of Technology.
    Nyström, Birgitha
    RISE - Research Institutes of Sweden, Materials and Production, SICOMP.
    Characterization and analysis of time dependent behavior of bio-based composites made out of highly non-linear constituents2013Conference paper (Refereed)
    Abstract [en]

    The objective of this investigation is to predict mechanical behavior of bio-based composites and their constituents by generalizing existing models to capture their time-dependent behavior. In order to identify and quantify parameters needed for the modeling, extensive damage tolerance tests as well as creep experiments are carried out. © The Society for Experimental Mechanics Inc. 2013.

  • 4.
    Segerholm, Kristoffer
    et al.
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Walkenström, Pernilla
    Nyström, Birgitha
    RISE, Swerea, SICOMP.
    Wålinder, Magnus
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Larsson Brelid, Pia
    RISE, SP – Sveriges Tekniska Forskningsinstitut, SP Sveriges tekniska forskningsinstitut, Trätek.
    Micromorphology, moisture sorption and mechanical properties of a biocomposite based on acetylated wood particles and cellulose ester2007In: Wood Material Science & Engineering, ISSN 1748-0272, E-ISSN 1748-0280, Vol. 2, no 3-4, p. 106-117Article in journal (Refereed)
  • 5.
    Seldén, Ragnar
    et al.
    RISE - Research Institutes of Sweden, Materials and Production, SICOMP.
    Nyström, Birgitha
    RISE, Swerea, SICOMP.
    Långström, Runar
    RISE - Research Institutes of Sweden, Materials and Production, SICOMP.
    UV aging of poly(propylene)/wood-fiber composites2004In: Polymer Composites, ISSN 0272-8397, E-ISSN 1548-0569, Vol. 25, no 5, p. 543-553Article in journal (Refereed)
    Abstract [en]

    The effect of accelerated UV-aging on properties of PP/wood-flber composites has been studied. Plates containing 0, 25 and 50 wt% wood-fibers were subjected to accelerated UV-aging in a QUV weatherometer for up to 8 weeks. Stabilization against UV-degradation was made by adding 3% of a UV stabilizer. The results showed that both the unfilled PP and the PP/wood-fiber composites displayed good UV resistance with regard to mechanical properties. The color of the PP/wood-fiber composite plates changed from brown to chalky white at the exposed area because of the formation of a thin, strongly degraded surface layer. Physical and chemical analysis of these surface layers using differential scanning calorimetry, Fourier transform infrared spectroscopy, and scanning electron microscopy showed that degradation of the PP matrix had occurred, leading to chemicrystallization and extensive surface cracking. A decrease in PP melting temperature was also noted, due to molecular chain scission and the formation of extraneous groups, such as carbonyls and hydroperoxides. These results indicate that the wood-fibers act as chromophores when incorporated in the PP matrix. Increasing the fiber content from 25 to 50 wt% increases the rate of degradation of the PP matrix by approximately a factor of two. © 2004 Society of Plastics Engineers.

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