Polylactide‐Based Nanocomposites

Ray, Suprakas Sinha; Ramontja, James

doi:10.1002/9780470391501.ch16

Cited by 2 publications

(1 citation statement)

References 72 publications

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“…It is an aliphatic thermoplastic polyester derived from lactic acid found in renewable resources, such as corn, wheat, barley, cassava, and sugar cane [13]. Lactic acid is then polymerised to PLA, either by gradual polycondensation or by ring-opening polymerisation.…”

Section: Introductionmentioning

confidence: 99%

Thermo-mechanical performance of poly(lactic acid)/flax fibre-reinforced biocomposites

Nassiopoulos

Njuguna

2015

Materials & Design

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In this study, the thermo-mechanical performance of flax fibre reinforced poly lactic acid (PLA) biocomposites was investigated for the potential use in load bearing application such as body-in-white and body structures in the automotive sector. Focus was given into the relationships between the thermal and mechanical properties, and the material response under different loading and environmental conditions. The strength (72 MPa) and stiffness (13GPa) of flax/PLA composites investigated indicate a very promising material to replace traditional choices in load bearing application. The PLA's crystallinity was measured to approximately 27%. Annealing above 100 °C for an hour decreased that value to 30%, but analysis of tensile results of annealed specimens reveals a significant reduction of both the tensile strength and modulus. This reduction is associated with micro-cracking that occurred on the surface of PLA during the heating as well as deterioration of the flax properties due to drying. The study results show that strength and modulus increased with increasing strain rates, while elongation at break reduces respectively. A modulus of 22 GPa was recorded in 4.2 m/sec crosshead velocity. Further, flax/PLA showed significantly higher modulus than flax/epoxy for the composites studied. Improvement of the interfacial bonding and the temperature characteristics, combined the thermoplastic nature of PLA, demonstrates that flax/PLA composites is ideal for use in structural automotive applications.

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Section: Introductionmentioning

confidence: 99%

Thermo-mechanical performance of poly(lactic acid)/flax fibre-reinforced biocomposites

Nassiopoulos

Njuguna

2015

Materials & Design

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Assessing the Structural Feasibility and Recyclability of Flax/PLA Bio-Composites for Enhanced Sustainability

B S,

Kancherla,

Raju

et al. 2024

SAE Technical Paper Series

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<div class="section abstract"><div class="htmlview paragraph">Bio-composites have gained significant attention within the aerospace industry due to their potential as a sustainable solution that addresses the demand for lightweight materials with reduced environmental impact. These materials blend natural fibers sourced from renewable origins, such as plant-based fibers, with polymer matrices to fabricate composite materials that exhibit desirable mechanical properties and environmental friendliness. The aerospace sector's growing interest in bio-composites originates from those composites’ capacity to mitigate the industry's carbon footprint and decrease dependence on finite resources.</div><div class="htmlview paragraph">This study aims to investigate the suitability of utilizing plant-derived flax fabric/PLA (polylactic acid) matrix-based bio-composites in aerospace applications, as well as the recyclability potential of these composites in the circular manufacturing economy. The bio-composite laminate is produced through a compression molding process involving interleaved layers of PLA and flax fiber mats. We discuss the manufacturing technique, mechanical behavior, thermal characteristics properties of the bio-composite. A thorough comparison is drawn between these properties and those of similar bio-composites. Moreover, the study emphasizes the recycling of these bio-composites using mechanical milling, and their subsequent use as additives in the original fiber mat laminated composites. A comprehensive evaluation is conducted, contrasting the attributes of the original laminate with those of the laminate containing recycled additives.</div><div class="htmlview paragraph">The outcomes of this study will contribute to understanding and assessing the sustainability of bio-based polymer applications. By examining the performance of flax/PLA bio-composites in aerospace composite material qualification settings and investigating their recyclability, this research reveals the viability as an eco-friendly alternative in the aerospace industry, aligning with the industry's ongoing efforts to adopt greener practices and materials.</div></div>

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Polylactide‐Based Nanocomposites

Cited by 2 publications

References 72 publications

Thermo-mechanical performance of poly(lactic acid)/flax fibre-reinforced biocomposites

Thermo-mechanical performance of poly(lactic acid)/flax fibre-reinforced biocomposites

Assessing the Structural Feasibility and Recyclability of Flax/PLA Bio-Composites for Enhanced Sustainability

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