Mechanical and thermomechanical properties of clay-Bambara nut shell polyester bio-composite

Okonkwo, E. G.; Anabaraonye, C. N.; Daniel-Mkpume, C. C.; Egoigwe, Sochima Vincent; Okeke, P. E.; Whyte, F. G.; Okoani, Anthony

doi:10.1007/s00170-020-05570-w

Cited by 21 publications

(11 citation statements)

References 34 publications

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“…Beyond a 16% addition of the cowpea husk, there is a reduction in interfacial distance leading to a decrease in chain mobility and total surface for fibre matrix interaction. Hence a decline in flexural property of the UPT composite probably due to formation of agglomerates at higher filler concentration causing insufficient stress transfer between fibres and the matrix as observed by Okonkwo et al [46] for Bambara nut shell polyester composite, for chicken feather [68] and for coconut and snail shell polyester composites [36]. The incorporation of clay (Figure 3d) improved the flexural modulus property of the hybrid composite with sample D2 containing 16% fibre and 83% UPT recording the maximum flexural modulus value of 2.912 GPa and sample E2 with 18% fibre having the minimum at 1.99 GPa.…”

Section: Flexural Propertiesmentioning

confidence: 92%

“…Sample description and composition for the production of the particle boards are shown in Table 1. The amount of clay particles used was fixed at 3 wt.% in line with previous works from the literature [46]. An unreinforced UPT sample was fabricated to serve as control for comparison in studying the effect of the CPH reinforcement.…”

Section: Composite Preparation and Experimental Designmentioning

confidence: 99%

“…A hybrid composite of 3 wt.% clay and varying tion of CPH was produced to check the effect of clay addition on the CPH/ description and composition for the production of the particle boards are sh 1. The amount of clay particles used was fixed at 3 wt.% in line with previou the literature [46]. An unreinforced UPT sample was fabricated to serve comparison in studying the effect of the CPH reinforcement.…”

Section: Composite Preparation and Experimental Designmentioning

confidence: 99%

“…The produced composites showed both improved mechanical properties and an increase in the glass transition temperature from 109 to 115 • C. Hossen et al [45] studied the effect of fibre treatment and nanoclay on the tensile properties of jute fibre-reinforced polyethylene/clay nanocomposites and showed the addition of a small amount of nanoclay improved the tensile properties of the composite without compromising the weight of the composite. Okonkwo et al [46] evaluated the feasibility of enhancing the properties of Bambara nut shell particulate reinforced polyester composite by incorporation of clay and the composite showed higher mechanical properties than existing composites.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical and Thermomechanical Properties of Clay-Cowpea (Vigna Unguiculata Walp.) Husks Polyester Bio-Composite for Building Applications

et al. 2022

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This study investigates the feasibility of creating a clay polymer-based composite using cowpea husk (CPH) as filler for production of roof tiles. Polymeric composites were fabricated by mixing unsaturated polyester (UPT) resin with cowpea husk at different filler weights and curing. A hybrid composite was produced with the addition of 3 wt.% clay and all samples produced were subjected to flexural, hardness and dynamic mechanical analysis (DMA) tests. The effect of clay addition on the mechanical and thermo-mechanical behaviour of formulated composites was investigated. The morphological analysis of the mono and hybrid system shows a rough and coarse inhomogeneous surface with voids created due to the addition of CPH filler for the mono reinforced and clay uniformly filling the voids that were created by the CPH in the hybrid composite. It is observed that hardness, tensile modulus and flexural modulus of hybrid composites increase with an increase in the CPH contents, while the strength and flexural strength all decrease with filler content. The optimal composition was obtained using Grey relational analysis (GRA) at 18% CPH for both mono and hybrid composite. The results imply that the composite combination can be used in making rooftiles and/or also in applications where low strength is required.

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Section: Flexural Propertiesmentioning

confidence: 92%

Section: Composite Preparation and Experimental Designmentioning

confidence: 99%

Section: Composite Preparation and Experimental Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Mechanical and Thermomechanical Properties of Clay-Cowpea (Vigna Unguiculata Walp.) Husks Polyester Bio-Composite for Building Applications

et al. 2022

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“…Still today, polymer blending is an important and active area in the field of material processing specially to improve the general properties of neat polymers [1,2]. Blending of polymers gained credibility as a simple approach to create novel materials without the cost associated with synthesis of new molecules [3].…”

Section: Introductionmentioning

confidence: 99%

Compatibilization of PA6/ABS blend by SEBS-g-MA: morphological, mechanical, thermal, and rheological properties

Essabir

Mechtali

Nekhlaoui

et al. 2020

Int J Adv Manuf Technol

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Blends polyamide 6 (PA6) and acrylonitrile-butadiene-styrene (ABS) were compatibilized with a styrene-(ethylene-butene)styrene triblock copolymer grafted with maleic anhydride (SEBS-g-MA). In particular, the effects of ABS (0-100 wt%) and compatibilizer (0, 8, and 16 wt%) content were studied. The blends were first prepared by twin-screw extrusion, and different specimens were prepared by injection molding. From the samples produced, the effects of blend composition on morphological, mechanical, rheological, and thermal properties are reported. The structural analysis confirmed that the original blend is immiscible but showed some compatibilization when in the presence of SEBS-g-MA. Incorporation of the compatibilizer and ABS showed negligible effect on the melting behavior of PA6. The compatibilized blends showed higher tensile strength compared with uncompatibilized ones. However, Young's modulus decreased with increasing compatibilizer content. The mechanical results were confirmed by rheological measurements in terms of interaction between each components in the blend.

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Synergistic effects of dune sand‐based silica and alkali‐treated date palm fiber as efficient fillers for improving the properties of hybrid epoxy composites

Maou,

Meftah,

Grohens

et al. 2024

J of Applied Polymer Sci

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Lignocellulosic fiber‐reinforced composites exhibit enhanced physical properties and eco‐friendliness, which has resulted in extended application of these biocomposite materials in important engineering sectors. In this study, we investigated the synergistic impacts of dune sand (DS)‐based silica (SiO2) and alkali‐treated date palm fiber (ADPF) fillers on the thermophysical and viscoelastic characteristics of epoxy (EP) hybrid composites. A hand layup procedure was employed to produce EP hybrid composites reinforced with 20 wt.% ADPF as well as 5, 7, and 10 wt.% DS. Compared to the other composite samples, the EP matrix reinforced with 20 wt.% ADPF and 10 wt.% DS (HC5) exhibited better thermal (Tmax = 380°C, Tg = 63.13°C) and dynamic mechanical properties (storage modulus = 2700 MPa). Additionally, Cole–Cole plots revealed the excellent interaction between ADPF, DS, and epoxy matrix. Scanning electron microscopy (SEM) measurements further confirmed that the development of an effective interface between DS particles, ADPF fiber, and epoxy matrix caused a decrease in water absorption (1.5%). The best wetting conditions with the lowest thickness swelling (2.8%) were obtained by increasing the DS content up to 10 wt.%. Based on these findings, it can be concluded that, owing to their superior dynamic mechanical characteristics, hybrid composites containing 10 wt.% DS may be employed in important aircraft and aeronautic applications.

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Mechanical and thermomechanical properties of clay-Bambara nut shell polyester bio-composite

Cited by 21 publications

References 34 publications

Mechanical and Thermomechanical Properties of Clay-Cowpea (Vigna Unguiculata Walp.) Husks Polyester Bio-Composite for Building Applications

Mechanical and Thermomechanical Properties of Clay-Cowpea (Vigna Unguiculata Walp.) Husks Polyester Bio-Composite for Building Applications

Compatibilization of PA6/ABS blend by SEBS-g-MA: morphological, mechanical, thermal, and rheological properties

Synergistic effects of dune sand‐based silica and alkali‐treated date palm fiber as efficient fillers for improving the properties of hybrid epoxy composites

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