Determination
of nucleating ability ofwood for non-isothermal crystallisation of polypropylene |
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Authors: | S Borysiak |
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Institution: | (1) Institute of Chemical Technology and Engineering, Poznan Univeristy of Technology, Poznan, Poland, 60-965, sq. Sklodowskiej-Curie 1 |
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Abstract: | Composites
made from an isotactic polypropylene matrix and wood (pine or beech) have
been prepared and tested. To improve adhesion between components, the wood
modification was performed by esterification with maleic, propionic, crotonic,
succinic and phthalic anhydrides. The surface of wood fillers was also modified
by chemical treatment with NaOH as well as by extraction process. Non-isothermal
crystallisation of polypropylene in wood composites is studied by DSC, and
the basic parameters of crystallisation are determined. We discovered that
the composites containing chemical treated wood fillers showed the tendency
reduction the nucleation efficiency of polypropylene. The ability of wood
filler to induce nucleation in polypropylene matrix is dependent on the kind
of chemical modification of surface wood |
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Keywords: | chemical modification crystallisation nucleation polypropylene wood |
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