Physical and mechanical properties of Pandanus amaryllifolius fiber reinforced low density polyethylene composite for packaging application

“…The native L-CNCs fillers were responsible for the decrease of elongation at break. This is because the addition of native L-CNCs interrupted the PVA mobility [42]. However, despite the reduction in elongation property, the native L-CNCs/PVA films retained enough flexibility and showed closer value to the commercial PVC cling wrap.…”

Section: Tensile Propertiesmentioning

confidence: 98%

Comparative Preparation Method and Associated Cost of Lignin–Cellulose Nanocrystals

2022

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Lignin is a natural source of UV-shielding materials, though its recalcitrant and heterogeneous structure makes the extraction and purification processes complex. However, lignin’s functionality can be directly utilised when it stays as native with cellulose and hemicellulose in plant biomass, rather than being separated. The fabrication process of this native lignin is sustainable, as it consumes less energy and chemicals compared to purified lignin; thus, it is an economic and more straightforward approach. In this study, the properties of native and purified lignin–cellulose nanocrystals (L–CNCs) sourced from hemp hurd waste were compared to explore the differences in their morphology, UV-shielding properties and chemical structure affected by their distinct fabrication process. These two kinds of L–CNCs were further added into polyvinyl alcohol (PVA) to evaluate their reinforcement characteristics. The resulting native L–CNCs/PVA film showed stronger UV-shielding ability than purified L–CNCs. Moreover, the native L–CNCs showed better compatibility with PVA, while the purified L–CNCs/PVA interfaces showed phase separation. The phase separation in purified L–CNCs/PVA films reduced the films’ tensile strength and Young’s modulus and increased the water vapour transmission. The laboratory-scale cost of native L–CNCs production (~AUD 80/kg) was only 10% of purified L–CNCs (~AUD 850/kg), resulting in a comparatively lower cost for preparing native L–CNCs/PVA composite films. Overall, this study shows that the proposed method of production and use of native L–CNCs can be an economic approach to deliver UV-shielding properties for potential applications, such as food packaging.

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“…Furthermore, this phenomenon is attributed to the in ltration into the free spaces caused by micro-voids and other morphological defects (Rahman et al 2012), and/or experimental defects during the manufacturing process of the composites. The saturated water weight for neat epoxy, RFE10, BFE10, RFE20, and BFE20 composites was recorded as 1.68, 4.24, 3.98, 5.76, and 5.48, respectively.…”

Section: Water Absorptionmentioning

confidence: 99%

Impact of Extraction Method on the Properties of Polymer Composites Reinforced with Natural Fiber from Agave Americana L

Mansouri,

Nasr,

Hentati

et al. 2024

Preprint

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In this study, we introduce a novel extraction technique involving burying lignocellulosic fibers from the leaves of Agave Americana L in soil. These fibers are then used to reinforce a polymer epoxy, aiming to enhance the mechanical and physical properties of the composite material. The aim is to valorize Agave Americana L, which is abundant and available in large quantities in Tunisia. The fiber content for the composites was chosen (0%, 10%, and 20%) to enhance the properties of the polymer composite. The mechanical, physical, and morphological properties of the composites were evaluated using SEM and EDX. Results showed that the flexural properties of the composites, based on biological and raw fibers (RFE10, FE10, RFE20, and BFE20), increased with the higher content of agave fibers. Furthermore, the mechanical findings revealed flexural strength varying between 141.74 and 161.92 MPa, and a modulus strength ranging between 8902 and 13674 MPa for biological fiber weights of 10% and 20%, respectively.

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Physical and mechanical properties of Pandanus amaryllifolius fiber reinforced low density polyethylene composite for packaging application

Cited by 9 publications

References 25 publications

Synthesis and properties of pandanwangi fiber reinforced polyethylene composites: Evaluation of dicumyl peroxide (DCP) effect

Synthesis and properties of pandanwangi fiber reinforced polyethylene composites: Evaluation of dicumyl peroxide (DCP) effect

Comparative Preparation Method and Associated Cost of Lignin–Cellulose Nanocrystals

Impact of Extraction Method on the Properties of Polymer Composites Reinforced with Natural Fiber from Agave Americana L

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