Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 503798
Title Dynamic and Capillary Shear Rheology of Natural Fiber-Reinforced Composites
Author(s) Moigne, N. Le; Oever, M.J.A. van den; Budtova, T.
Source Polymer Engineering and Science 53 (2013)12. - ISSN 0032-3888 - p. 2582 - 2593.
Department(s) FBR BP Biorefinery & Natural Fibre Technology
Publication type Refereed Article in a scientific journal
Publication year 2013
Abstract An extended dynamic and capillary rheological study of molten flax and sisal polypropylene (PP) composites was performed. Fiber concentration varied from 20 to 50 wt% and shear rate from 0.1 rad s−1 to 10,000 s#142;−1. Maleic anhydride-grafted-PP was used as compatibilizer; it strongly reduces PP and composite viscosity. Composites are yield-stress shear-thinning fluids with solid-like behavior being more pronounced at high fiber content. Composites do not obey Cox–Merz rule, which was explained by different macrostructures of the molten composites in parallel plates and capillary die geometries: random fiber orientation versus strong alignment in the flow direction, respectively. Theories describing the viscosity of suspensions of solid particles were applied to the composites studied and rheological parameters and maximal packing fiber volume fraction were calculated. POLYM. ENG. SCI., 53:2582–2593, 2013. ©2013 Society of Plastics Engineers.
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