Procedural influences on compression and injection moulded cellulose fibre-reinforced polylactide (PLA) composites: Influence of fibre loading, fibre length, fibre orientation and voids

Graupner, Nina; Ziegmann, Gerhard; Wilde, Fabian; Beckmann, Felix; Müssig, Jörg

doi:10.1016/j.compositesa.2015.10.040

Cited by 74 publications

(54 citation statements)

References 38 publications

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“…As reported by Le Moigne et al [15] fibre length can be strongly influenced and biased by extreme values. It is obvious that the median fibre length of virgin lyocell 1.3 dtex/PLA with a value of 467 µm is clearly higher than the critical fibre length L c (220 µm [35]), while the fibre length of the reprocessed composite is on the level with the L c Figure 7b); the reprocessed composite contains 48% fibres longer than L c . For virgin lyocell 6.7 dtex/PLA the median fibre length of 661 µm is slightly higher than L c (500 µm [35]) and represents 62% of fibres having length values higher than L c .…”

Section: Fibre Length Distributionmentioning

confidence: 99%

“…It is obvious that the median fibre length of virgin lyocell 1.3 dtex/PLA with a value of 467 µm is clearly higher than the critical fibre length L c (220 µm [35]), while the fibre length of the reprocessed composite is on the level with the L c Figure 7b); the reprocessed composite contains 48% fibres longer than L c . For virgin lyocell 6.7 dtex/PLA the median fibre length of 661 µm is slightly higher than L c (500 µm [35]) and represents 62% of fibres having length values higher than L c . The median fibre length of the reprocessed com- The lower tensile strength of composites reinforced with coarser fibres is therefore based on one hand on lower fibre strength and on the other hand on the fibre length, especially the lower aspect ratio.…”

Section: Fibre Length Distributionmentioning

confidence: 99%

“…However, finer fibres display a lower equivalent diameter resulting in a higher aspect ratio despite the lower median fibre length (view Figure 8). The critical aspect ratio which is necessary for a reinforcement effect was determined to be 21 in a previous study for lyocell [33,35]. The critical aspect ratio is calculated from the critical fibre length of lyocell divided by the fibre diameter.…”

Section: Fibre Length Distributionmentioning

confidence: 99%

“…However, reprocessed composites contain fibres of a length > 300 µm only to 36, 48 and 62% of lyocell 1.3 dtex, lyocell 6.7 dtex and lyocell 15.0 dtex respectively. The critical fibre length of lyocell fibres of variable fineness was determined and calculated in previous studies [33,35] and is presented as rhombuses in Figure 7a. Since the results of the fibre length measurements are not distributed normally, the median values are utilised.…”

Section: Fibre Length Distributionmentioning

confidence: 99%

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Influence of reprocessing on fibre length distribution, tensile strength and impact strength of injection moulded cellulose fibre-reinforced polylactide (PLA) composites

Graupner

Albrecht²,

Ziegmann³

et al. 2016

Express Polym. Lett.

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Abstract. The present study focuses on the reprocessing behaviour of recycled injection moulded polylactide (PLA) composites. The composites are reinforced with regenerated cellulose fibres (lyocell) of variable fineness and a fibre mass content of 30%. They were reprocessed up to three times. The influence of reprocessing on the fibre length distribution and the resulting composite mechanical properties (tensile and impact strength) was analysed. While the first reprocessing cycle does not affect the mechanical characteristics of the neat PLA matrix, the strength of the composites decreases significantly due to a decreasing fibre aspect ratio. It was shown that fibres having a larger cross-sectional area display a lower aspect ratio than finer fibres, after reprocessing. This phenomenon leads to a larger decrease in tensile strength of composites reinforced with coarser fibres when compared to composites reinforced with finer fibres. A comparison of virgin composites and threefold reprocessed composites with a similar fibre length distribution resulted in a significantly higher tensile strength compared to the virgin sample. This result leads to the conclusion that not only the fibre length is drastically reduced by reprocessing but also that the fibres and the matrix were damaged.

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Section: Fibre Length Distributionmentioning

confidence: 99%

Section: Fibre Length Distributionmentioning

confidence: 99%

Section: Fibre Length Distributionmentioning

confidence: 99%

Section: Fibre Length Distributionmentioning

confidence: 99%

See 2 more Smart Citations

Influence of reprocessing on fibre length distribution, tensile strength and impact strength of injection moulded cellulose fibre-reinforced polylactide (PLA) composites

Graupner

Albrecht²,

Ziegmann³

et al. 2016

Express Polym. Lett.

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show abstract

“…Shapiro-Wilk, Turkey and Wilcoxon test are the methods to check the normalization and determination of the significant different of data. Graupner et al [105] found that 40% fibre loading can increase the strength of compression moulded composites while the injection moulded composites is optimize in 30% fibre loading.…”

Section: Multiple Linear Regression (Mlr)mentioning

confidence: 99%

Multi-criteria decision-making tools for material selection of natural fibre composites: A review

Muhammad¹,

Sapuan²,

Mastura³

2018

J. MECH. ENG. SCI.

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Materials selection in manufacturing process is an important stage and should be performed in parallel with selection of manufacturing process. In automotive industry, production of green automotive component could utilize the natural sources such as plant fibres. In recent years, several multi-criteria decision-making (MCDM) techniques are suggested to choose the best materials for particular application. Materials selection tools for natural fibre composites are studied from past researchers with the summary of the advantage and disadvantages. In addition, new optimization approach in materials selection by using statistical analysis such as multiple linear regression (MLR), response surface methodology (RSM) and Taguchi method (TM) is proposed in this study. The proposed method could evaluate the criteria or attribute in materials selection precisely by analyse the relationship of the parameters, goodness of fit, correlation, analysis of variance (ANOVA), determination of coefficient and the significant criteria in to the desired goal of the design problem.

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Characterisation of Fibre/Matrix Adhesion in Biobased Fibre‐Reinforced Thermoplastic Composites

Müssig

Graupner

2017

Textile Finishing

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Procedural influences on compression and injection moulded cellulose fibre-reinforced polylactide (PLA) composites: Influence of fibre loading, fibre length, fibre orientation and voids

Cited by 74 publications

References 38 publications

Influence of reprocessing on fibre length distribution, tensile strength and impact strength of injection moulded cellulose fibre-reinforced polylactide (PLA) composites

Influence of reprocessing on fibre length distribution, tensile strength and impact strength of injection moulded cellulose fibre-reinforced polylactide (PLA) composites

Multi-criteria decision-making tools for material selection of natural fibre composites: A review

Characterisation of Fibre/Matrix Adhesion in Biobased Fibre‐Reinforced Thermoplastic Composites

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