Improvements in the thermal behaviour of date palm/bamboo fibres reinforced epoxy hybrid composites

Jawaid, Mohammad; Awad, Sameer A.; Fouad, Hassan; Asim, Mohammad; Saba, N.; Dhakal, Hom Nath

doi:10.1016/j.compstruct.2021.114644

Cited by 60 publications

(36 citation statements)

References 35 publications

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“…TGA is a consistent method utilized to investigate the thermal stability and the degradation profile of polymeric materials. [ 40–42 ] The thermal stability is evaluated by TGA in terms of the initial degradation temperature (T i ), the final degradation temperature (T f ), the maximum temperature (From DTG curves), and the residue at the final decomposition temperature. Figure 3 shows a comparison of TGA curves of untreated and treated pure composites.…”

Section: Resultsmentioning

confidence: 99%

A comparative assessment of chemical, mechanical, and thermal characteristics of treated oil palm/pineapple fiber/bio phenolic composites

et al. 2022

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In this study, the alkali‐treated and untreated hybrid fibers incorporated with bio phenolic matrix to enhance the chemical interactions, mechanical and thermal properties have been investigated. The oil palm fiber (OPF) and pineapple fiber (PALF) were utilized as reinforcements into bio phenolic resin. The improvements in chemical interactions were monitored by the Fourier transform infrared spectrometer. The modifications of the surface for hybrid natural fibers (OPF/PALF) were enhanced in comparison to pure fiber composites. The composites' dynamic mechanical behavior such as storage modulus, loss modulus, and damping properties were also investigated by dynamic mechanical analysis. Thermogravimetric analysis analyzed the performance of untreated (OPF and PALF) and treated (OPF/OPF) composites at elevated temperature and observed adequate interfacial bonding as a result of the improvements in thermal stability. The results presented that alkali) NaOH(incorporation in hybrid composites (OPF/PALF) results in increased the tensile strength and modulus among all composites. Furthermore, the tensile strength and modulus improved to the maximum value for treated 50% PALF composite compared to other composites. The hybridisation of treated alkali (5% NaOH/50% PALF) fiber shows best performance on tensile strength and modulus with 33.3 and 7535.2 MPa, respectively compared to other composites. The alkali‐treated hybrid composites (NaOH/1OPF.1PALF) exhibited the greatest flexural strength (99.8 MPa) and modulus (8813.1 MPa). The enhancement of the interfacial adhesion between pure and hybrid fiber composites and bio phenolic matrix through the mercerisation of OPF and PALF fibers reinforced composite played an essential role in improving the mechanical properties of composites via alkali treatment with NaOH solution. Natural fiber reinforced composites are commercially attractive for high‐volume applications; while their properties can be improved by adding alkali solution as stabilizers. It can be recommended from the findings of this study that the alkali treatment (5% NaOH) can be used to enhance the efficiency of agriculture waste biomass. Additionally, the hybridization of bio‐fiber composites has potential to develop novel type of biodegradable and sustainable composites suitable for various industrial and engineering applications.

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Section: Resultsmentioning

confidence: 99%

A comparative assessment of chemical, mechanical, and thermal characteristics of treated oil palm/pineapple fiber/bio phenolic composites

et al. 2022

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“…However, in this work, cellulose/PE composite film with a uniform structure could be achieved by the “one-pot method” without any pretreatment. Differently from previous works, where the natural fibers were usually used as the reinforced phase [ 34 , 35 , 36 , 37 ], in this work the bamboo-based paper board was dissolved and regenerated into a cellulose film matrix, and the undissolved PE pieces were used as the additives. Hence, transparent cellulose/polyethylene composite films were achieved.…”

Section: Resultsmentioning

confidence: 99%

“…With the development of science and technology, it is known that materials with single components cannot always meet social needs, and composite materials now play an important role in our daily life [ 34 , 35 ]. Bio-composites, natural fiber-reinforced polymer composites, are now recognized as being significant composite competitor materials to conventional composite due to their attractive features, which include being lightweight, having high strength, and possessing a specific stiffness, and they have been widely investigated and used in various construction and building fields [ 36 , 37 ]. However, more efforts should be made in developing new bio-composites and optimizing these materials for new applications [ 35 ].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of Transparent and Uniform Cellulose/Polyethylene Composite Films from Used Disposable Paper Cups by the “One-Pot Method”

Wang

Zhou

et al. 2022

Polymers

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Disposable paper cups are usually composed of high-grade paper board and an inner polyethylene coatings and are extensively used in daily life. However, most disposable paper cups are only used for a short time and then incinerated or accumulated in landfill at the end of their service due to the difficulty in separating the components, leading to a serious threat to our ecosystem. Therefore, developing a facile and green method to recycle and reuse disposable paper cups is vital. By using ionic liquid 1-allyl-3-methylimidazolium chloride (AmimCl) as a solvent, transparent and homogenous cellulose/polyethylene composite films were successfully prepared from used bamboo-based disposable paper cups through the “one-pot method”, without any pre-treatment. It was found that there was a transformation of cellulose I to II after the dissolution and regeneration processes, and the crystallinity degree of the regenerated cellulose-based materials decreased significantly, resulting in a change in thermal properties. Meanwhile, compared to traditional pure cellulose films, the composite films possessed good UV-shielding properties and hydrophobicity. Moreover, they also displayed good mechanical properties. Additionally, the size of the ground PE coatings displayed obvious effects on the structures and properties of the composite films, where the CPE100 (sieved with 100–200 mesh) possessed the most homogeneous texture and the highest tensile strength (82 Mpa), higher than that of commercial polyethylene film (9–12 MPa), showing superiority as packaging or wrapping materials. Consequently, the goals to fabricate uniform cellulose/polyethylene composite films and valorize the solid waste from disposable paper cups were simultaneously achieved by a facile and green “one-pot method”.

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“…Date palm + Bamboo Epoxy The hybridization of the composite presents an increase of storage modulus (E ) when compared with single fiber composites. [69] Buriti Epoxy The addition of buriti fiber improved the storage modulus (E ) and T g when compared with pure epoxy. [183] Thermoplastic matrices Flax + Basalt PLA The addition of natural fiber increased the storage modulus (E ) of the composites when compared to pure PLA composite.…”

Section: Bamboo + Kenaf Epoxymentioning

confidence: 99%

A Review on the Thermal Characterisation of Natural and Hybrid Fiber Composites

2021

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The thermal stability of natural fiber composites is a relevant aspect to be considered since the processing temperature plays a critical role in the manufacturing process of composites. At higher temperatures, the natural fiber components (cellulose, hemicellulose, and lignin) start to degrade and their major properties (mechanical and thermal) change. Different methods are used in the literature to determine the thermal properties of natural fiber composites as well as to help to understand and determine their suitability for a certain applications (e.g., Thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and differential mechanical thermal analysis (DMA)). Weight loss percentage, the degradation temperature, glass transition temperature (Tg), and viscoelastic properties (storage modulus, loss modulus, and the damping factor) are the most common thermal properties determined by these methods. This paper provides an overview of the recent advances made regarding the thermal properties of natural and hybrid fiber composites in thermoset and thermoplastic polymeric matrices. First, the main factors that affect the thermal properties of natural and hybrid fiber composites (fiber and matrix type, the presence of fillers, fiber content and orientation, the treatment of the fibers, and manufacturing process) are briefly presented. Further, the methods used to determine the thermal properties of natural and hybrid composites are discussed. It is concluded that thermal analysis can provide useful information for the development of new materials and the optimization of the selection process of these materials for new applications. It is crucial to ensure that the natural fibers used in the composites can withstand the heat required during the fabrication process and retain their characteristics in service.

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Improvements in the thermal behaviour of date palm/bamboo fibres reinforced epoxy hybrid composites

Cited by 60 publications

References 35 publications

A comparative assessment of chemical, mechanical, and thermal characteristics of treated oil palm/pineapple fiber/bio phenolic composites

A comparative assessment of chemical, mechanical, and thermal characteristics of treated oil palm/pineapple fiber/bio phenolic composites

Fabrication and Characterization of Transparent and Uniform Cellulose/Polyethylene Composite Films from Used Disposable Paper Cups by the “One-Pot Method”

A Review on the Thermal Characterisation of Natural and Hybrid Fiber Composites

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