Effect of cashew shell biomass synthesized cardanol oil green compatibilizer on flexibility, barrier, thermal, and wettability of PLA/PBAT biocomposite films

Thiyagu, T Thendral; J.V, Sai Prasanna Kumar; Gurusamy, P.; Sathiyamoorthy, V.; Maridurai, Thirupathy; VR, Arun Prakash

doi:10.1007/s13399-021-01941-9

Cited by 62 publications

(26 citation statements)

References 28 publications

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“…According to the Owens–Wendt approach, the neat Biofilm substrate showed highly hydrophobic behavior, with a low polar fraction of surface energy and the lowest polarity value

, equal to 0.07. Hydrophobicity can be enhanced by some additives, such as cardanol oil [ 71 ] and pine resin derivatives [ 72 ], by chain extenders, such as Joncryl ADR 4370S [ 73 ], or by particular arrangements and conformations of polymer chains [ 74 ]. On the other hand, the m-PVOH coating had higher surface energy, with an increased polar fraction and the highest polarity value (equal to 0.43), as a consequence of the number of polar units (–OH and C=O groups) in its structure.…”

Section: Resultsmentioning

confidence: 99%

Effect of PVOH/PLA + Wax Coatings on Physical and Functional Properties of Biodegradable Food Packaging Films

et al. 2022

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Biodegradable polymers suffer from inherent performance limitations that severely limit their practical application. Their functionalization by coating technology is a promising strategy to significantly improve their physical properties for food packaging. In this study, we investigated the double coating technique to produce multifunctional, high barrier and heat-sealable biodegradable films. The systems consisted of a web layer, made of poly(lactide) (PLA) and poly(butylene-adipate-co-terephthalate) (PBAT), which was first coated with a poly(vinyl) alcohol based layer, providing high barrier, and then with a second layer of PLA + ethylene-bis-stereamide (EBS) wax (from 0 to 20%), to provide sealability and improve moisture resistance. The films were fully characterized in terms of chemical, thermal, morphological, surface and functional properties. The deposition of the PVOH coating alone, with a thickness of 5 μm, led to a decrease in the oxygen transmission rate from 2200 cm3/m2 d bar, for the neat substrate (thickness of 22 μm), to 8.14 cm3/m2 d bar (thickness of 27 μm). The deposition of the second PLA layer did not affect the barrier properties but provided heat sealability, with a maximum bonding strength equal to 6.53 N/25 mm. The EBS wax incorporation into the PLA slightly increased the surface hydrophobicity, since the water contact angle passed from 65.4°, for the neat polylactide layer, to 71° for the 20% wax concentration. With respect to the substrate, the double-coated films exhibited increased stiffness, with an elastic modulus ca. three times higher, and a reduced elongation at break, which, however still remained above 75%. Overall, the developed double-coated films exhibited performances comparable to those of the most common synthetic polymer films used in the packaging industry, underlining their suitability for the packaging of sensitive foods with high O2-barrier requirements.

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“…According to the Owens–Wendt approach, the neat Biofilm substrate showed highly hydrophobic behavior, with a low polar fraction of surface energy and the lowest polarity value

Section: Resultsmentioning

confidence: 99%

Effect of PVOH/PLA + Wax Coatings on Physical and Functional Properties of Biodegradable Food Packaging Films

et al. 2022

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“…The casted PVA flexible sheets were further allowed to cure at room temperature for about 8 h to form complete processes of films. [ 25 ] The proposed composite and its composition are listed in Table 1.…”

Section: Methodsmentioning

confidence: 99%

EMI shielding of cobalt, red onion husk biochar and carbon short fiber‐PVA composite on X and Ku band frequencies

Devi¹,

Nagabhooshanam²,

Chokkalingam

et al. 2022

Polymer Composites

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This present study discusses the effects of doped novel cobalt-onion peel-based water soluble Poly vinyl alcohol (PVA) composite for its electromagnetic interference shielding (EMI) effectiveness in high-frequency bands such as X and Ku region. The primary aim of this study was to prepare a flexible electromagnetic shielding material for protecting electronic gadgets from the EMI effect. The biochar particles were prepared from red onion peel and mixed with cobalt/chopped carbon fiber (CCF) to form a compound structure. According to the results, the biochar and CCF addition improved the relative permittivity up to 9.6. Similarly, the hysteresis analysis showed a broad "S" curve for 2 vol % cobalt-added PVA composite. Moreover the doped composites are better in mechanical properties and the highest tensile strength of 79 MPa with Shore-D hardness of 37 was noted for PV3 composite designation. Finally, the highest wave shielding of À44.37 dB and À 49.62 dB for X and Ku band were observed for composite designation PVA4. This EMI shielding effectiveness improved composites could be used as shielding material for modern industrial, defense, and medical applications.

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“…The protein-based animal fibers include wool, mohair, feathers of birds, and silk. [5][6][7] But natural fiber-based polymer composites have constrained uses in modern engineering structures due to their poor performance under impact. However, natural fibers are good candidate for product weight reduction, material cost reduction, and renewability.…”

Section: Introductionmentioning

confidence: 99%

Fatigue, fracture toughness and DMA of biosilica toughened epoxy with stacked okra fiber and Al 2024‐T3 fiber metal laminate composite

Ramesh¹,

Uvaraja²,

Jayaraja

et al. 2022

Polymer Composites

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In this present study, a natural fiber-based fiber metal laminate (FML) was fabricated for various engineering applications. The primary aim of this present investigation was to study the effect of adding natural fiber along with metal and the effect of the surface-treatment process on the reinforcements on load-bearing and thermo-mechanical properties. Okra fiber woven mat, aluminum 2024-T3 foil and rice husk-derived biosilica were used as reinforcements.For surface treatment, the metal foil was sandblasted whereas the okra fiber and biosilica were silane-treated. The FML was fabricated using the vacuum bag method utilizing as-received and silane-treated reinforcements as two separate models. According to the results, the addition of Al foil and okra fiber improved the storage modulus and loss factor of about 4.2 GPa and 0.39 for surface-treated reinforcements. Similarly, maximum fracture toughness and energy release of 39.42 MPa √m and 0.76 MJ/m 2 for surface-treated EOA2 composite designation. Moreover, the addition of okra fiber and Al foil increased the fatigue life counts up to 54,266, 48,116, and 26,263 for surfacetreated EOA2 composite at 30%, 60%, and 90% of ultimate tensile stress (UTS).Such thermo-mechanical and load-bearing properties improved FMLs could be used in automotive, aircraft, drone and other industrial applications requiring high structural rigidity and load absorbing capability.

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Effect of cashew shell biomass synthesized cardanol oil green compatibilizer on flexibility, barrier, thermal, and wettability of PLA/PBAT biocomposite films

Cited by 62 publications

References 28 publications

Effect of PVOH/PLA + Wax Coatings on Physical and Functional Properties of Biodegradable Food Packaging Films

Effect of PVOH/PLA + Wax Coatings on Physical and Functional Properties of Biodegradable Food Packaging Films

EMI shielding of cobalt, red onion husk biochar and carbon short fiber‐PVA composite on X and Ku band frequencies

Fatigue, fracture toughness and DMA of biosilica toughened epoxy with stacked okra fiber and Al 2024‐T3 fiber metal laminate composite

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