Influence of alkali treatment on physiochemical and morphological properties of palmyra fibers

Industrial Crops and Products, Journal Year: 2024, Volume and Issue: 224, P. 120298 - 120298

Published: Dec. 19, 2024

Language: Английский

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Improving fibrillation and structural integrity of coconut frond fibers with alkali and steam processing

Materials Letters, Journal Year: 2025, Volume and Issue: unknown, P. 138140 - 138140

Published: Jan. 1, 2025

Language: Английский

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Enhancing the tensile strength and morphology of Sansevieria trifasciata Laurentii fibers using liquid smoke and microwave treatments: an RSM approach

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Feb. 5, 2025

Liquid smoke (LS), an eco-friendly substance, is effective in modifying natural fibers to enhance their mechanical properties, surface morphology, and thermal stability. This study investigates the effects of LS immersion followed by microwave treatment on tensile strength, characteristics Sansevieria trifasciata Laurentii (STL) fibers. Response methodology (RSM) with central composite design (CCD) was used optimize parameters, including time, heating temperature, duration. Mechanical, morphological, structural, properties were analyzed using scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), differential calorimetry (DSC). Optimal conditions: 120 min at 40 °C for 30 min. They resulted a strength 370.23 MPa, 37.21% improvement compared untreated Treated exhibited enhanced stability, increased crystallinity, improved morphology. These findings demonstrate that treatments effectively STL fibers' positioning them as promising reinforcement materials sustainable applications.

Language: Английский

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Surface modification of keratin from agro-industrial products treated by green processes to generate sustainable materials

Sustainable Chemistry and Pharmacy, Journal Year: 2025, Volume and Issue: 44, P. 101959 - 101959

Published: Feb. 21, 2025

Language: Английский

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Tracking flax dew retting by infrared vibrational spectroscopy combined with a powerful multivariate statistical analysis

Industrial Crops and Products, Journal Year: 2025, Volume and Issue: 227, P. 120798 - 120798

Published: March 8, 2025

Language: Английский

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Adding Value to Natural Fibers by Surface Modification and Their Uses in Polymer Biocomposites

Surfaces and Interfaces, Journal Year: 2025, Volume and Issue: unknown, P. 106197 - 106197

Published: March 1, 2025

Language: Английский

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The Macromolecular Transition of Kapok Fiber by RF Plasma Treatment Investigated by SAXS/WAXD Studies and Their Correlation With Electrical Properties of the Fiber‐Reinforced Composites

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 25, 2025

ABSTRACT The macromolecular structure of untreated and RF plasma‐treated kapok fiber (KF) was investigated employing small‐angle x‐ray scattering (SAXS) wide‐angle diffraction (WAXD). Subsequently, the structural transition KF correlated with dielectric properties their reinforced epoxy polymer composites. WAXD patterns resemble Iβ cellulose. crystallinity index (CI) crystallite size (CS) values are found to increase from 48.8% 3.0 nm 55.6% 3.6 nm, respectively, after plasma treatment on at a power 30 W for min. one‐dimensional three‐dimensional correlation functions calculated background‐corrected smeared‐out SAXS intensity data. theories developed by Vonk Ruland were used estimate different parameters functions, considering has non‐ideal two‐phase structure. maximum value CI, CS minimum transversal length in void phase () volume fraction obtained treated Consequently, composites exhibit low constant (12) loss (0.5), enhancing suitability use printed circuit boards.

Language: Английский

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Revaluation of Guadua Fiber for the Sustainable Production of Recycled Thermoplastic Composites with Potential Industrial Applications and Their Corresponding Life Cycle Analysis

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

Plastics are widely used in manufacturing various products due to their durability, strength, and low cost; however, they originate from nonrenewable sources. The growing interest developing environmentally friendly materials has driven research toward the incorporation of natural fibers recycled plastics. In Ecuador, Guadua Angustifolia Kunth (GaK) bamboo is usually as furniture construction materials. Therefore, this work aims reevaluate traditional use GaK fibers, exploring potentiality using chemically treated reinforcement material for thermoplastic composites. This study presents development composite based on high-density polyethylene (HDPE), HDPE (rHDPE), an experimental design that includes performing tension, flexural, impact tests obtain optimal formulation. composites were characterized optical microscopy, SEM, FTIR, DSC, TGA, EDX, followed by a life-cycle assessment (LCA). SEM images revealed morphological changes while TGA indicated significant mass loss degradation above 200 °C all DSC showed melting temperature approximately 133 samples. These results there will not be fiber during processing. highest maximum tensile strength achieved among optimization samples was 18.69 MPa. All increase Young's modulus, with enhancement up 204% compared pure HDPE, albeit marked reduction elongation percentage. flexural increased 17.84%, but decreased 83% fiber-matrix compatibility ductility composite, which allows it absorb less energy before fracture. formulation had 10% cellulose, 50% 40% rHDPE, exhibited 17.62 MPa, obtained mixture regression. LCA demonstrated rHDPE-based significantly lower environmental virgin HDPE. Using rHDPE critical reducing footprint composites, incorporating further decreases GWP emissions enhancing certain properties.

Language: Английский

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Sustainable hybrid composites from flax, vetiver, and Luffa cylindrica: Acoustic and structural performance

Polymer Composites, Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

Abstract Sustainable, eco‐friendly composites have always been of great interest due to increasing environmental awareness. In this regard, there is a continuous demand for alternative sustainable materials with enhanced performance. This study focuses on the development hybrid using flax fibers, vetiver root and Luffa cylindrica fillers. Composites were fabricated varied fiber loading ratios evaluated tensile, flexural, impact, interlaminar shear strengths, sound absorption capabilities. Pure (FV) exhibited highest tensile strength (40.2 MPa), whereas containing two layers 51 g (FVL3) achieved best acoustic absorption, attenuating up 65% incident sound. Morphological analysis via SEM revealed that optimized fiber–matrix bonding well‐distributed porous network in FVL3 contributed its superior absorption. Although vetiver‐rich showed improved impact behavior, excessive content led diminished properties lower cellulose levels reduced adhesion. The results confirm balancing inclusions can tailor mechanical Consequently, recommended noise mitigation applications, such as wall panels, where moderate high are essential. Meanwhile, pure flax‐based laminates be prioritized load‐bearing scenarios requiring higher strength. Therefore, findings underscore potential flax–vetiver–luffa (FVL) hybrids alternatives structural noise‐control offering route environmentally responsible composite design without sacrificing Highlights Eco‐friendly developed flax, vetiver, luffa. Alkali treatment improves fiber‐matrix Flax achieve 40.2 MPa. absorbs 59% sound, ideal applications. biodegradable reduce effectively.

Language: Английский

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Biofiber-reinforced composite for extenuation of electromagnetic interference in aerospace application

Composite Interfaces, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 22

Published: April 15, 2025

Language: Английский

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