Studies on the characterization of piassava fibers and their epoxy composites

Nascimento, Denise Cristina Oliveira; Ferreira, Ailton Silva; Monteiro, Sérgio Neves; Aquino, Regina Coeli Martins Paes; Kestur, Satyanarayana G.

doi:10.1016/j.compositesa.2011.12.004

Cited by 90 publications

(59 citation statements)

References 24 publications

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“…It is worth noting that for composites application, untreated fibres have the advantage of having silica bodies to prevent sliding between the fibre filler and resin matrix (Nascimento et al 2012). Otherwise, pre-treated fibres with the absence of silica bodies (Shamsudin et al 2012) can improve the adhesion between filler and matrix through better bonding or interface (Kalia et al 2009).…”

Section: D Micromechanical Modelmentioning

confidence: 99%

“…As a consequence, a high quantity of oil palm empty fruit bunch (OPEFB) material is being produced (Shuit et al 2009) and utilisation of this readily available and carbonaceous OPEFB is important. The OPEFB are currently being used for biocompost (Bahrin et al 2012) and biocomposites (Nascimento et al 2012), where the focus is on the OPEFB surface, which contains embedded silica bodies (Law et al 2007). Biocompost requires removal of silica bodies from OPEFB fibres using high pressure steam or chemical treatments (Bahrin et al 2012;Shamsudin et al 2012;Yunos et al 2012).…”

Section: Introductionmentioning

confidence: 99%

“…sliding motion between the filler (fibre) and matrix (resin) (d 'Almeida et al 2006;Nascimento et al 2012). An illustration of the microstructure of OPEFB is shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Silica Bodies on the Mechanical Behaviour of Oil Palm Empty Fruit Bunch Fibres

Omar¹,

Mohammed²,

Baharuddin³

2014

BioResources

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The surface of oil palm empty fruit bunch fibres contains embedded silica bodies or protrusions. The mechanical contribution of the protrusions towards the integrity of the fibres is still not clearly investigated. In this work, 2D and 3D finite element simulations on the surface and cross section of the fibres, respectively, were performed. The information for the models was obtained from scanning electron microscopy analysis and mechanical tests for the silica body characteristics and elastic modulus, respectively. Different silica bodies arrangements and the effect of spiked geometry of the silica bodies was investigated using 2D models. Cohesive zone modelling was introduced to simulate damage or debonding between the interface of silica bodies and fibre. A 3D finite element model was later developed consisting of a silica body (sphere) embedded halfway in the matrix. The numerical results showed that the 2D model was sensitive to critical stress compared to silica bodies spiked geometry, arrangement of silica bodies on the fibre surface, and cohesive energy. On the other hand, the results showed that for 3D models with thicknesses larger than 0.2 mm, the effect of the silica bodies on the elasticity of the fibre was not significant.

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Section: D Micromechanical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of Silica Bodies on the Mechanical Behaviour of Oil Palm Empty Fruit Bunch Fibres

Omar¹,

Mohammed²,

Baharuddin³

2014

BioResources

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“…In contrast, micromechanical studies on other natural fibres such as wood and plant cell walls are well established (Somerville et al 2004;Burgert 2006;Qi 2009Qi , 2011Burgert and Dunlop 2011;Hayot et al 2012). It is believed that silica bodies contribute to the strength and rigidity of OPEFB (Nascimento et al 2012). To illustrate this, Fig.…”

Section: Introductionmentioning

confidence: 99%

Microstructure Modelling of Silica Bodies from Oil Palm Empty Fruit Bunch (OPEFB) Fibres

Omar¹,

Mohammed²,

Baharuddin³

2013

BioResources

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Investigating the mechanical behaviour of silica bodies in oil palm empty fruit bunches (OPEFB) is important to improve the process of silica body removal. This study will assist in providing an understanding of the role of OPEFB as a bioresource material for the bioconversion process. The microstructure of silica bodies/protrusions on the OPEFB fibre surface was modelled using the finite element method, based on the information obtained from scanning electron microscopy (SEM). The effects of silica body geometry, possible anisotropy/orthotropy, and debonding between the interface of the silica body and OPEFB fibre were investigated. Agreements were observed between the results using both circular and spiked silica body models with different geometries and volume fractions. In addition, the cohesive debonding modelling results showed that once critical stress was activated, the stress-strain curve deviated from the nodebond model. The results also suggested that the value of cohesive energy should be between 0.5 kN/m and 4 kN/m.

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“…Despite the difficulties that face research exploring the uses of natural fibres, it is becoming more and more important to invest in this field. One of the pros of using natural fibres to substitute man-made fibres is the fact that they are not only environmentally friendly during their growth but also after using them, since natural fibres are biodegradable [12][13][14][15][16][17][18]. However, the setbacks of using natural fibres cannot be overlooked, for example, their poor wettability, being incompatible with some polymers, and high moisture absorption [11,14].…”

Section: Introductionmentioning

confidence: 99%

Looking for Links between Natural Fibres’ Structures and Their Physical Properties

Everitt

Aboulkhair

Clifford

2013

Conference Papers in Materials Science

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Natural fibres have excited growing attention in the last decade since they offer the potential to act as candidates substituting for man-made fibres as composite reinforcements. Their superiority over synthetic fibres is that they are environmentally friendly and biodegradable. Numerous industrial sectors are interested in such composites, including but to name a few the aeronautical and the automotive fields. However natural fibres tend to suffer from large variability in properties compared to the "traditional" man-made fibres, and the performance of their composites often does not conform to that theoretically predicted from single-fibre tests. This study investigates the properties of the single fibres. The mechanical properties of the fibres were correlated to their microstructure. There are factors that were found to contribute to the reported variability, some of which are inherent in the fibres and some are related to testing parameters.

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Studies on the characterization of piassava fibers and their epoxy composites

Cited by 90 publications

References 24 publications

Effect of Silica Bodies on the Mechanical Behaviour of Oil Palm Empty Fruit Bunch Fibres

Effect of Silica Bodies on the Mechanical Behaviour of Oil Palm Empty Fruit Bunch Fibres

Microstructure Modelling of Silica Bodies from Oil Palm Empty Fruit Bunch (OPEFB) Fibres

Looking for Links between Natural Fibres’ Structures and Their Physical Properties

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