Influence of Chemical Treatment on the Physico-mechanical Characteristics of Natural Fibers Extracted from the Barks of <i>Vachellia Farnesiana</i>

Vijay, R.; D, Jafrey Daniel James; Subramanian, Gomathy Sandhya; Narasimhan, Harikrishnan; Baskar, Chandru; Murugesan, A.; Khan, Anish; Otaibi, Ahmed Al

doi:10.1080/15440478.2021.1875353

Cited by 39 publications

(12 citation statements)

References 22 publications

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“…At the same time during the reaction, lower weight biopolymer presented in untreated biomass has been removed and the overall crystallinity index of the wood particle increased. Therefore, cellulose‐II may have a better crystalline index and thermal stability compared with cellulose‐I 31,32 …”

Section: Materials and Methodologymentioning

confidence: 99%

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Effects of graphene nanoparticles with organic wood particles: A synergistic effect on the structural, physical, thermal, and mechanical behavior of hybrid composites

Saha

Kumar

2022

Polymers for Advanced Techs

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Development of sustainable and lighter‐weight materials with low or zero carbon footprint is the major research field in 21st century. The current research has been focused on the development of hybrid composite materials from organic wood particles and graphene nanoparticles (GNPs) along with epoxy resin as matrix material. A constant 5% weight percentage of wood particles has been maintained, while GNPs weight percentages have been varied from 0% to 1% by weight with an equal interval of 0.25. The effects of GNPs addition on wood particle reinforced epoxy composite have been examined by performing different structural, physical, mechanical, thermal, and dynamic mechanical testings. The addition of GNPs up to 0.75% resulted in the increment of 28% hardness, 42.04% tensile strength, 34.24% flexural strength, 22.47% impact strength, and 16.3% fracture toughness, and 129.61% conductivity compared with wood composites (GPC‐0.0). Similar observations have been observed for dynamic mechanical analysis where, the GPC‐0.75 composites recorded maximum storage modulus (2.54 GPa), viscous modulus (0.27 GPa), and glass transition temperature (97°C). Further increments of graphene percentage (GPC‐1.0) resulted in agglomeration between particles and revealed decrements properties. The structural analysis of wood particles and GNPs have been examined with X‐ray diffractometer, Fourier transforms infrared spectroscopy, and thermogravimetric analysis. The developed composites showed better interfacial bonds between matrix and reinforcements that reduce the void and moisture contents as well as improved the fracture behavior. Therefore, these filter‐hybrid composites may be used for energy harvesting, solar cells, electronic gadgets, sensor, and heating equipment.

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Section: Materials and Methodologymentioning

confidence: 99%

“…Therefore, cellulose-II may have a better crystalline index and thermal stability compared with cellulose-I. 31,32…”

Section: Surface Modification Of Wood Particlesmentioning

confidence: 99%

Effects of graphene nanoparticles with organic wood particles: A synergistic effect on the structural, physical, thermal, and mechanical behavior of hybrid composites

Saha

Kumar

2022

Polymers for Advanced Techs

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“…The fibers are extracted from pineapple leaf and that same fiber used to fabricate polyester composites. NFs are extracted via three methods, namely chemical, manual, and mechanical [52,53]. A mechanical method of extracting fibers is often advantageous in obtaining high-quality fibers in a very short interval of time [54].…”

Section: Palf Materialsmentioning

confidence: 99%

Experimental Investigation of Effect of Fiber Length on Mechanical, Wear, and Morphological Behavior of Silane-Treated Pineapple Leaf Fiber Reinforced Polymer Composites

Praveena

Lakshmikanthan

Chandrashekarappa

et al. 2022

Fibers

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The development of the best properties in polyester composite from pineapple leaf fiber (PALF) as a reinforcing material is a subject of interest. The properties of PALF are reliant upon fiber length, wherein technical difficulties in production of long fibers and processing for better characteristics in polyester composites possess inherent challenges. The PALFs are subjected to silane treatment for altering fiber properties. This research attempts to analyze the impact of silane-treated PALF with varying fiber lengths (5, 10, 15, 20, and 25 mm) on the performance of natural fiber composites (NFC) properties. Open mold and hand lay-up techniques were employed to develop the polyester composites. The prepared PALF-based polyester composites were examined for different properties (impact, flexural, tensile strength, and wear rate). Coefficient of friction and wear studies are performed on the prepared composites subjected to different loads (10, 20, and 30 N) via a pin on disc test rig. Polymer composite fracture surfaces were analyzed to observe the interfacial bonding between fibers and matrix via scanning electron microscopy (SEM). SEM results showed that the application of silane treatment resulted in better surface topography (fiber length of 5–10 mm showed smooth surface resulted in crack proliferation possessing low fracture toughness of 15–32 MPa; whereas a 15–20 mm fiber length resulted in better fiber–matrix bonding, improving the fracture toughness from 42–55 MPa) as a result of change in chemical structure in PALF. The 20 mm length of PALF resulted in better properties (flexural, tensile, impact, and wear resistance) which are attributed to fiber–matrix interfacial bonding. These properties ensure the developed polymer composites can be applied to walls, building insulation, and artificial ceilings.

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“…Treatment using chemicals on the surface of natural fibers is commonly used since it performs better than biological and physical treatments. [ 10 ] The biological treatments were done using bacterial cellulose while the physical treatment were done plasma etc. In literature, many surface treatments using chemicals are said, namely silane, sodium hydroxide, sodium bicarbonate, benzoyl chloride, HCl, peroxide, acetic acid etc.…”

Section: Introductionmentioning

confidence: 99%

“…Hydrochloric acid treatment decreased the cellulose content by less than the untreated one due to more reduction by the acid attack on the surface. Shanmugasundaran et al [14] explored the various concentrations of NaOH (5,10,15 wt/vol%) influence on the various characteristics of Areca palm leaf stalk fibers. It was found that 5 (wt/vol%) of NaOH treatment showed better results with 68.54% cellulose, which was higher than all the other concentrations treatments and an untreated one.…”

Section: Introductionmentioning

confidence: 99%

Suitability assessment of raw‐alkalizedZiziphus nummulariabark fibers and its polymeric composites for lightweight applications

SV¹,

Rajendran²,

N³

2022

Polymer Composites

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The global trend of environmental protection has led to replacing synthetic fibers in every feasible application with natural fibers. An alteration of the fiber's surface is essential for the natural fiber to be more suitable for use. In this study, the mercerization processes including 5% (wt/vol) sodium hydroxide solution at five different soaking times (15, 30, 45, 60, and 75 min), were used in this study to enhance various features of Ziziphus nummularia fibers isolated from Ziziphus nummularia plant stems. Results showed that 60 min alkalized Ziziphus nummularia fibers had cellulose content of 65.72%, which seems to be higher, and it was termed as optimally alkalized Ziziphus nummularia fibers. The thermal studies showed that optimally alkalized Ziziphus nummularia fibers had a degradation temperature of 360 C. The optimally alkalized Ziziphus nummularia fibers showed a crystalline index of 50.6% and crystal size of 3.52 nm. Epoxy composites were manufactured with various loading percentages of optimally alkalized and raw Ziziphus nummularia fibers to prove the application suitability. It was shown that 20 wt% of optimally alkalized Ziziphus nummularia fibers-based epoxy composites showed a higher ultimate tensile strength of 40.31 MPa than all other composites. Scanning Electron microscope studies elucidated the fiber's surface behavior and other characteristics of fibers and tested epoxy composites.

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Influence of Chemical Treatment on the Physico-mechanical Characteristics of Natural Fibers Extracted from the Barks of Vachellia Farnesiana

Cited by 39 publications

References 22 publications

Effects of graphene nanoparticles with organic wood particles: A synergistic effect on the structural, physical, thermal, and mechanical behavior of hybrid composites

Effects of graphene nanoparticles with organic wood particles: A synergistic effect on the structural, physical, thermal, and mechanical behavior of hybrid composites

Experimental Investigation of Effect of Fiber Length on Mechanical, Wear, and Morphological Behavior of Silane-Treated Pineapple Leaf Fiber Reinforced Polymer Composites

Suitability assessment of raw‐alkalizedZiziphus nummulariabark fibers and its polymeric composites for lightweight applications

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