Lignocellulosic fiber breakage in a molten polymer. Part 1. Qualitative analysis using rheo-optical observations

Castellani, Romain; Giuseppe, Erika Di; Beaugrand, Johnny; Dobosz, Simon; Berzin, Françoise; Vergnes, Bruno; Budtova, Tatiana

doi:10.1016/j.compositesa.2016.10.015

Cited by 26 publications

(40 citation statements)

References 38 publications

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“…Flax fibre bundles show a fragile breaking behaviour, but elementary fibres break by fatigue [36]. The SEM analysis shows that, sisal has more cohesive bundles compared to flax.…”

Section: Optical Observations Via Sem and Ultra-high-speed Cameramentioning

confidence: 99%

“…The SEM analysis shows that, sisal has more cohesive bundles compared to flax. Castellani et al [36] showed that, for sisal, the separation of bundles is difficult, before the separation they break into single fibres and chunks form. The elementary fibres often remain attached to the bundle surface of sisal [36].…”

Section: Optical Observations Via Sem and Ultra-high-speed Cameramentioning

confidence: 99%

“…Castellani et al [36] showed that, for sisal, the separation of bundles is difficult, before the separation they break into single fibres and chunks form. The elementary fibres often remain attached to the bundle surface of sisal [36]. Oksman et al [53] also showed that flax is several times thinner compared to sisal after processing.…”

Section: Optical Observations Via Sem and Ultra-high-speed Cameramentioning

confidence: 99%

“…Recent research activities can be found in literature determining the different breakage mechanisms of flax, sisal, hemp, and miscanthus [22,36,37]. Castellani et al (2016) found three main mechanisms to differ the fibre breakage behaviour of lignocellulosic fibres:…”

Section: Introductionmentioning

confidence: 99%

“…Dislocations are defects which are produced during the extraction of fibres out of the stem [38,41,42]. [36]. Steuernagel et al (2013) found an interesting aspect for natural fibres as reinforcement, even with respect to recycling, due to the fact that the fibre bundles not only break, but also split [43].…”

Section: Introductionmentioning

confidence: 99%

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Fibre Length Reduction in Natural Fibre-Reinforced Polymers during Compounding and Injection Moulding—Experiments Versus Numerical Prediction of Fibre Breakage

et al. 2018

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Abstract:To establish injection-moulded, natural fibre-reinforced polymers in the automotive industry, numerical simulations are important. To include the breakage behaviour of natural fibres in simulations, a profound understanding is necessary. In this study, the length and width reduction of flax and sisal fibre bundles were analysed experimentally during compounding and injection moulding. Further an optical analysis of the fibre breakage behaviour was performed via scanning electron microscopy and during fibre tensile testing with an ultra-high-speed camera. The fibre breakage of flax and sisal during injection moulding was modelled using a micromechanical model. The experimental and simulative results consistently show that during injection moulding the fibre length is not reduced further; the fibre length was already significantly reduced during compounding. For the mechanical properties of a fibre-reinforced composite it is important to overachieve the critical fibre length in the injection moulded component. The micromechanical model could be used to predict the necessary fibre length in the granules.

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“…Flax fibre bundles show a fragile breaking behaviour, but elementary fibres break by fatigue [36]. The SEM analysis shows that, sisal has more cohesive bundles compared to flax.…”

Section: Optical Observations Via Sem and Ultra-high-speed Cameramentioning

confidence: 99%

Section: Optical Observations Via Sem and Ultra-high-speed Cameramentioning

confidence: 99%