Characterisation of sawdust-like wood materials

Risto Korpinen, Pedro Fardim

    Tutkimustuotos: Artikkeli kirjassa/raportissa/konferenssijulkaisussaKonferenssiartikkeliTieteellinen


    The aim of this study was to examine the chemical and morphological properties of sawdust-type wood materials and compare them with conventional wood chips. Wood sawdust and chip screenings were air-dried and fractionated. Fibre dimensions, inorganics, bark, extractives and lignin were determined for the different fractions. Wood chips were also studied similarly for reference purposes. Carbohydrate content was further determined from the smallest size fractions and the largest size and weight fractions. We found that the particle size of sawdust-like wood material was not uniform and the distribution was concentrated in the smallest fractions containing short fibres and narrow cell walls. On the other hand, fibre width was almost intact resulting in larger lumina than corresponding chips. Bark particles, sand and grit were accumulated in small fractions, chip screenings containing more inorganics, extractives, lignin and bark than sawdust. Finally, the fractionation process did not affect the wood fibre chemistry, only small differences were observed when comparing the carbohydrate content between the different fractions in the same wood raw material. We suggest that sawdust-like wood materials are valuable sources for producing different chemical and mechanical pulps which can be used in paper formulations based in mixtures of short and long fibres.
    AlkuperäiskieliEi tiedossa
    Otsikko9th European Workshop on Lignocellulosics and Pulp : Advances in Chemistry and Processing of Lignocellulosics : Proceedings
    ToimittajatN N
    KustantajaUniversity of Natural Resources and Applied Life Sciences, Vienna (BOKU)
    TilaJulkaistu - 2006
    OKM-julkaisutyyppiB3 Ei-soviteltu artikkeli konferenssin julkaisusarjassa
    Tapahtumaconference; 2006-08-27; 2006-08-30 - Vienna
    Kesto: 27 elokuuta 200630 elokuuta 2006


    Konferenssiconference; 2006-08-27; 2006-08-30