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Rheological properties of aminosilane surface treated short glass fibre reinforced polypropylenes. Part 1: Steady shear and oscillatory flow properties in molten state

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dc.title Rheological properties of aminosilane surface treated short glass fibre reinforced polypropylenes. Part 1: Steady shear and oscillatory flow properties in molten state en
dc.contributor.author Nishitani, Yosuke
dc.contributor.author Sekiguchi, Isamu
dc.contributor.author Hausnerová, Berenika
dc.contributor.author Zdražilová, Natálie
dc.contributor.author Kitano, Takeshi
dc.relation.ispartof Polymers and Polymer Composites
dc.identifier.issn 0967-3911 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued 2007
utb.relation.volume 15
utb.relation.issue 2
dc.citation.spage 111
dc.citation.epage 119
dc.type article
dc.language.iso en
dc.publisher Rapra Technology Ltd. en
dc.subject Fiber reinforced plastics en
dc.subject Polypropylenes en
dc.subject Shear deformation en
dc.subject Surface treatment en
dc.subject Viscosity en
dc.subject Aminosilane coupling agent en
dc.subject Angular frequencies en
dc.subject Anhydride en
dc.subject Rotational viscometer en
dc.subject Silanes en
dc.description.abstract The effect of surface treatment on the theological properties of 20 and 40 wt.% short glass fibre reinforced polypropylenes (GF/PP) and of the same composites containing maleic anhydride modified polypropylene (GF/mPP/PP) were investigated. Glass fibres were surface-treated by aminosilane coupling agent (ASC, gamma-aminopropyltriethoxysilane). Steady state shear and dynamic properties in the molten state were measured using a cone and plate type rotational viscometer. Surface treatment increased the theological properties of the molten composites. This trend was more pronounced for composites containing modified PP. In the case of the GF/PP materials the increase was monotonous for all measured functions, while in the case of the GF/mPP/PPones, the parameters representing elasticity showed peaks at 0.5 wt.% ASC. The Cox-Merz empirical law was found to be applicable to untreated GF/PP and GF/mPP/PP composites at low shear rates (angular frequencies), where the materials showed Newtonian plateaux. As for ASC surface treated materials, GF/mPP/PP followed the same trend. On the other hand, GF/PP exhibited a higher complex viscosity than the steady state shear one over the whole range of angular frequencies (shear rate) covered by the experiments. Surface treatment enhanced apparent yield stress, as did increasing the glass fibre content. The effect of the latter was more pronounced in the case of the GF/mPP/PP series. The viscosities of the re-mixed composites became lower than those of the original ones, and the difference between untreated and ASC treated systems was detectable only in the case of the complex viscosity of the GF/mPP/PP sample. en
utb.faculty Faculty of Technology
dc.identifier.uri http://hdl.handle.net/10563/1002098
utb.identifier.obdid 16553061
utb.identifier.scopus 2-s2.0-34247282040
utb.identifier.wok 000245848300004
utb.identifier.coden PPOCE
utb.source j-wok
dc.date.accessioned 2011-08-16T15:06:28Z
dc.date.available 2011-08-16T15:06:28Z
utb.contributor.internalauthor Hausnerová, Berenika
utb.contributor.internalauthor Kitano, Takeshi
utb.contributor.internalauthor Zdražilová, Natálie
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