Thermal degradation and fire retardant behaviour of natural fibre reinforced polymeric composites- A comprehensive review

Hiremath, Vinayak S.; Reddy, D. Mallikarjuna; Reddy Mutra, Rajasekhara; Sanjeev, Aditya; Dhilipkumar, Thulasidhas; J, Naveen

doi:10.1016/j.jmrt.2024.04.085

Cited by 15 publications

(2 citation statements)

References 97 publications

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“…EP-CBOH showed different thermal decomposition processes in nitrogen and air atmospheres. In nitrogen, the primary process was thermal cracking, while in air, the primary process was thermal oxidation. − Under an air atmosphere, EP-CBOH-0 underwent extensive degradation in the temperature range of 450–600 °C and generated lots of carbon dioxide. With the introduction of CBOH, the degradation peak gradually shifted to 750 °C, and the released amount of CO 2 was significantly lower than that of EP-CBOH-0.…”

Section: Results and Discussionmentioning

confidence: 99%

Preparation of Structural Heat-and-Radiation-Resistant Integrated Epoxy by Constructing a Carborane-Hybridized Cross-Linked Network

Xu,

Zhao,

Chen

et al. 2024

Macromolecules

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The polymer materials in nuclear facilities are exposed to high temperatures, radiation, and high loads. Their excellent heat resistance, radiation resistance, and shielding properties are important for the safe operation of nuclear facilities. In this study, 1,2-bis(hydroxymethyl)carborane (CBOH) was first synthesized in large quantities through water extraction and then introduced into an epoxy resin cross-linked network. The incorporation of a carborane structure significantly improved the heat resistance of epoxy. Under air atmosphere, the T 5% (the temperature at 5 wt % degradation), T 10% (the temperature at 10 wt % degradation), and char yield at 800 °C of the materials were 315.67 °C (16.51 °C increased), 326.29 °C (12.96 °C increased), and 33.22% (33.22% increased), respectively. The maximum decomposition temperature of the material increased from 550 to 750 °C, and 7.05 wt % of the carbon constituent was protected after thermal degradation at 800 °C. The glass transition temperature (T g ) of the materials greatly increased up to over 300 °C after introducing the carborane structure into the networks. The radiation resistance of the material was enhanced due to the in situ capture of oxygen radicals by the carborane structure. Moreover, the incorporation of carborane structure also increased the content of H and B in materials, improving their neutron-shielding capability. This work confers multifunctionality to epoxy resin and enhances its various properties, ensuring the safety of epoxy resin in nuclear facilities.

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Section: Results and Discussionmentioning

confidence: 99%

Preparation of Structural Heat-and-Radiation-Resistant Integrated Epoxy by Constructing a Carborane-Hybridized Cross-Linked Network

Xu,

Zhao,

Chen

et al. 2024

Macromolecules

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“…This causes chain scission, which lowers the composite's mechanical strength. Elevated temperatures can accelerate the degradation of Exposure to ultraviolet (UV) radiation and can cause photo-oxidation of PLA/sisal composites, leading to discolouration, surface cracking, and loss of mechanical properties over time [48,56,57]. In environments rich in microorganisms, such as soil or composting facilities, PLA/sisal composites can undergo biodegradation, where microorganisms break down the polymer into simpler compounds [58,59].…”

Section: Recycling and Pla/sisal Composites' Degradation Processesmentioning

confidence: 99%

Development of Green Composite Utilizing Sisal Strands and Sustainable 3-D Printed PLA Layers

Ramaiah,

Tilahun,

Negawo

et al. 2024

Text Leather Rev

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PLA/Sisal hybrid composites have been used in cars and technical textile applications. When utilized in composites, 3-D-printed PLA layers can improve performance and homogeneity. The primary goal of this research was to use sisal and 3-D-printed polylactic acid (PLA) layers to develop a sustainable bio-composite. To enhance the bonding of sisal fibres with the PLA matrix, sisal fibres were given a sodium hydroxide treatment. This would improve the mechanical and thermal properties of composites. Sisal fibre (between 4 wt% and 8 wt%), epoxy concentration (between 85 wt% and 90 wt%), and PLA 3-D printing infilling percentage (between 90 wt% and 100 wt%) were the independent parameters. The Taguchi L8 orthogonal array design was used to make the composite samples. The changes in the amounts of PLA infill, epoxy matrix concentration, and sisal fibre content were considered for test sample development. The optimal settings for improving their tensile, flexural, and impact capabilities were determined by analyzing their signal-to-noise ratio (S/N). The PLA/sisal fibre composite showed a remarkable level of mechanical properties in Sample 8, surpassing those of the other samples. To improve mechanical and thermal properties, the appropriate values for sisal fibre composition, PLA infilling percentage, and epoxy concentration percentage were 8 per cent, 95 per cent, and 85 per cent, respectively. After testing, the tensile (293–295.4 Megapascal) (Mpa), impact (2.73–4.84 Mpa), and flexural strength (188.5–270.4 Mpa) results show that the new composite has better mechanical behaviour properties. Additionally, FTIR, SEM, and DSC experiments were run to examine the composite's structural characteristics. Using less volatile epoxy resin, a sustainable 3-D-printed PLA layer and Sisal fibre bio-composite were developed.

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Exploring the synergistic effects of graphene on the mechanical and vibrational response of kenaf/pineapple fiber‐reinforced hybrid composites

Dhilipkumar,

Arunpandian,

Arumugam

et al. 2024

Polymer Composites

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The automotive, aerospace, and sports industries are increasingly utilizing hybrid composites made from natural fiber reinforcements. This study evaluated the performance of a composite made from kenaf and pineapple fibers, manufactured using the compression molding process, with graphene nanoparticles added at varying weight concentrations of 0.5, 1.0, 1.5, and 2.0 wt%. Results showed that adding 0.5 wt% graphene increased the tensile, flexural, and impact strength of hybrid composite by 133.75%, 90.24%, and 25.67%, respectively. Microstructural analysis revealed that graphene integration has enhanced the interfacial bond between the fiber and the matrix, creating resin‐rich areas. Furthermore, the free vibrational analysis indicated that graphene‐infused composites exhibited higher natural frequencies, improving their energy‐absorbing capabilities. Water absorption tests demonstrated that the inclusion of graphene reduced water penetration by improving interfacial bonding, minimizing voids, and decreasing surface energy, which limited water pathways in the composite. Furthermore, the composites with 0.5 wt% graphene showed a contact angle of 80.8°, indicating lower hydrophilicity compared to neat composites, which had a contact angle of 70.7°. This research emphasizes the advantages of hybrid composite materials derived from kenaf and pineapple fibers, specifically for applications in vehicle interiors and construction, including wall panels and separators.Highlights Hybrid composite was prepared using the compression molding process. Adding 0.5 wt% graphene improved the mechanical properties of composites. Hybrid composites with lower wt% graphene had higher natural frequencies. The composites with 0.5 wt% graphene had better water absorption properties.

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Thermal degradation and fire retardant behaviour of natural fibre reinforced polymeric composites- A comprehensive review

Cited by 15 publications

References 97 publications

Preparation of Structural Heat-and-Radiation-Resistant Integrated Epoxy by Constructing a Carborane-Hybridized Cross-Linked Network

Preparation of Structural Heat-and-Radiation-Resistant Integrated Epoxy by Constructing a Carborane-Hybridized Cross-Linked Network

Development of Green Composite Utilizing Sisal Strands and Sustainable 3-D Printed PLA Layers

Exploring the synergistic effects of graphene on the mechanical and vibrational response of kenaf/pineapple fiber‐reinforced hybrid composites

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