Extrusion foaming of Poly(lactic acid)/Rice straw composites: Opposing effects of eco-friendly physical/chemical treatment and compatibilization methods DOI

Aidin Jafari,

Reza Asheghi‐Oskooee,

Farkhondeh Hemmati

et al.

Journal of Composite Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 10, 2024

In this study, the effects of two environmentally-friendly pulping methods along with different reactive compatibilization on foamability poly (lactic acid) (PLA)/rice straw (RS) biocomposites have been investigated. RS as an annually renewable agricultural waste is low-cost and available. Melt-compounding melt-foaming processes were performed through a twin-screw extrusion processing. The correlations between processing microstructure studied. findings show that sodium bicarbonate (SB) solution leads to lignocellulosic particles porous structure. structure causes filler/matrix mechanical engagement improves interfacial adhesion rheological properties, hence forming smaller cells narrowest cell size distribution. contrast, applying ultrasound waves pulp brings very smooth surfaces. These surfaces highest activity at nucleation stage considerably increase foam’s density. compatibilizers based epoxy maleic anhydride groups opposing biocomposite microstructure, depending type. use in PLA/RS treated SB led lighter foams larger higher densities void fractions. Whereas incorporation into containing ultrasonic resulted noticeably lower density foam extruded closed-cell can be used insulation packaging applications.

Language: Английский

Selection of automotive brake friction composites reinforced by agro-waste and natural fiber: An integrated multi-criteria decision-making approach DOI Creative Commons
Tej Singh, Gustavo da Silva Gehlen, Vedant Singh

et al.

Results in Engineering, Journal Year: 2024, Volume and Issue: 22, P. 102030 - 102030

Published: March 16, 2024

The aim of this study is to develop a method for selecting and ranking automotive brake friction composite materials made from agro-waste natural fibers. This achieved by using an integrated multi-criteria decision-making methodology. Consequently, six samples are produced reinforcing rice husk, husk ash, Grewia optiva fiber. These then assessed their frictional properties laboratory-scale tribometer, in accordance with the requirements outlined SAE J2522 standard. selection criteria based on analyzed tribological parameters, which include coefficients, wear, fluctuations fade-recovery performances. CRITIC (criteria importance through intercriteria correlation) was used determine performance evaluation. Based analysis, average coefficient (0.1592), recovery-3 (0.1363), (0.1347), (0.1240) were identified as key criteria. use MARCOS (measurement alternatives according compromise solution) assessment reveals that reinforced ash exhibit most favorable characteristics. validation different tools demonstrates reliability effectiveness proposed approach.

Language: Английский

Citations

12
Experimental study on the effect of filament-extrusion rate on the structural, mechanical and thermal properties of material extrusion 3D-printed polylactic acid (PLA) products DOI Creative Commons
László Lendvai, Imre Fekete, Daniele Rigotti

et al.

Progress in Additive Manufacturing, Journal Year: 2024, Volume and Issue: unknown

Published: May 12, 2024

Abstract Material extrusion (MEX), also commonly referred to as fused deposition modeling (FDM) or filament fabrication (FFF) is currently one of the most used additive manufacturing techniques. The quality 3D-printed objects fabricated by MEX methods highly relies on various printing parameters, which so-called multiplier ( k ). In this study, parts were prepared technique during material feeding rate was adjusted varying in range 97–105% = 0.97–1.05). tested for their geometrical, structural, mechanical, and thermal conductivity properties. Based computed tomographic analysis scanning electron microscopic images, increasing parameter resulted smaller voids, along with gradually decreasing porosity (from 5.82 0.05%). Parallel defects, improved from 0.157 0.188 W/mK determined light-flash technique. On other hand, when set ≥ 1.03 geometrical accuracy declined, size specimens considerably increased relative nominal values, especially X–Y directions due excess getting “squeezed” sides specimens. This latter phenomenon formation a number stress concentration sites, manifested decrease mechanical Accordingly, tensile, flexural, impact strength samples up 1.03; however, above that it dropped considerably.

Language: Английский

Citations

11
Green chemistry approaches in three-dimensional printing: A review on the fabrication of sustainable PLA-based products using natural fluorescent dyes DOI
Bhupinder Singh, Amandeep Kaur, Mahipal Singh

et al.

Bioresource Technology Reports, Journal Year: 2025, Volume and Issue: unknown, P. 102070 - 102070

Published: Feb. 1, 2025

Language: Английский

Citations

1
An integrated multicriteria decision making framework for the selection of waste cement dust filled automotive brake friction composites DOI Creative Commons
Tej Singh

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: March 21, 2024

Abstract This work discusses selecting optimal brake friction composite alternatives based on an integrated MABAC (multi-attributive border approximation area comparison) and AHP (analytic hierarchy process) approach. Therefore, non-asbestos automotive composites containing varying proportions of cement dust (50 to 0 wt%) barium sulfate (0 50 were developed tribo-evaluated a Krauss machine following European regulations. Composite made up 30 wt% 20 had the highest coefficient (0.361), lowest variability (0.598), maximum recovery (123.27%). The with least fading (15.36%) included dust, whereas wear (9.10 g) frictional fluctuations (0.271) contained sulfate. By AHP, (0.1989), fade (0.1696), (0.1551), (0.1412) selected as essential criteria in performance assessment. Based ranking evaluation, comprises has best tribological profile, solely or have poorest profile. acquired results confirmed using other decision-making models subjected sensitivity analysis demonstrate their robustness.

Language: Английский

Citations

7
Agricultural by-product filled poly(lactic acid) biocomposites with enhanced biodegradability: The effect of flax seed meal and rapeseed straw DOI Creative Commons
Sándor Kálmán Jakab, Tej Singh, Imre Fekete

et al.

Composites Part C Open Access, Journal Year: 2024, Volume and Issue: 14, P. 100464 - 100464

Published: April 29, 2024

The purpose of this research was to develop "green" materials by combining poly(lactic acid) (PLA) with two agricultural by-products, namely flax seed meal (FSM) and rapeseed straw (RSS). natural fillers (0-20 wt.%) were mixed PLA through extrusion then injection molded into specimens. samples analyzed for their thermal, morphological, mechanical, physical features biodegradability. Thermal properties crystallinity using Differential Scanning Calorimetry (DSC), while the morphology investigated Electron Microscopy (SEM). Mechanical characterized tensile, flexural, impact measurements, surface hardness evaluated Shore D tests. Water absorption biodegradability also examined. DSC measurements revealed a nucleating effect both bio-fillers. Based on tensile tests, major improvement in stiffness found biocomposites having up ∼16% higher Young's modulus than neat (2.5 GPa). It came, however, at cost strength, which decreased from 56 51 MPa even presence lowest amount FSM. Loss strength due limited adhesion between components, as supported SEM images. slightly (1-2%) improved 2.5 wt.% bio-filler it remained that level filler loading well. Laboratory-scale composting facilitated biodegradation FSM being superior. In 10-20 FSM, rate decomposition be twice fast compared PLA.

Language: Английский

Citations

6
A study on the effects of silver/zinc oxide nanocomposite dispersed modified elastin-collagen matrix on crystallization, thermal and antimicrobial properties of poly (lactic acid) films DOI
Yezihalem Zena, Selvakumar Periyasamy,

Melakuu Tesfaye

et al.

Journal of the Taiwan Institute of Chemical Engineers, Journal Year: 2025, Volume and Issue: unknown, P. 106137 - 106137

Published: April 1, 2025

Language: Английский

Citations

0
Effects of carbon‐based nanoparticles on the properties of poly(lactic acid) hybrid composites containing basalt fibers and carbon‐based nanoparticles processed by injection molding DOI Creative Commons

Zsolt Juhász,

Balázs Pinke,

Bence Gonda

et al.

Polymer Engineering and Science, Journal Year: 2024, Volume and Issue: 64(6), P. 2491 - 2500

Published: March 12, 2024

Abstract In this study, we developed composites with a poly(lactic acid) matrix and reinforced basalt fiber, carbon‐based nanoparticles (carbon nanotube [CNT] expanded graphene [GNP]), both fiber (hybrid composites). The were produced by extrusion, then tensile specimens injection molded from the composites. hybrid exhibited enhanced mechanical properties. reinforcing materials increased crystallinity; was more pronounced for We experienced significant increase in glass transition temperature, which proves better interaction between phases. Dynamic thermal analysis showed that storage modulus alone combination fibers. Furthermore, fiber‐reinforced hybrids above temperature. Based on scanning electron microscopy images of fracture surfaces, concluded adding fibers during compounding resulted dispersion nanoparticles. Highlights Poly(lactic (PLA) has good strength Graphene exhibits notable improvement hybrids. carbon nanotubes are crystalline nucleating agents PLA. Enhanced nanoparticle distribution discovered temperature PLA increases reinforcement.

Language: Английский

Citations

3
Tasar silk fiber waste reinforced polylactic acid composite: physical, mechanical, and sliding wear characterization DOI Creative Commons
Lalit Ranakoti,

Yatharth Joshi,

Prabhakar Bhandari

et al.

Results in Engineering, Journal Year: 2024, Volume and Issue: unknown, P. 102865 - 102865

Published: Sept. 1, 2024

Language: Английский

Citations

3
Lignocellulosic Biocomposite Membranes for Air Filtration and Environmental Protection: A Review DOI Creative Commons
Abiodun Abdulhameed Amusa,

Anwar Johari,

Kamil Kayode Katibi

et al.

JOURNAL OF RENEWABLE MATERIALS, Journal Year: 2025, Volume and Issue: 0(0), P. 1 - 10

Published: Jan. 1, 2025

The increasing severity of air pollution necessitates more effective and sustained filtration technology.Concurrently, the desire for environmentally friendly, sustainable materials with better filtering performance less environmental impact drives move away from conventional synthetic membranes.This review presents lignocellulosic biocomposite (LigBioComp) membranes as an alternative to traditional membranes.It focuses on their materials, fabrication, functionalization techniques while exploring challenges proposing methods resourceful utilization.Renowned abundance renewable nature, consist cellulose, hemicellulose, lignin.Various applications can benefit antibacterial properties, large surface area, remarkable mechanical strength.LigBioComp are fabricated through casting, electrospinning, freeze-drying, advancements in fabrication enhancing applicability.It is suggested use solvent-free or low-solvent such Layer-by-Layer assembly minimize impact.Freeze-drying electrospinning green solvents be used achieving specific membrane though energy consumption should considered.Apply dry-wet spinning solvent casting processes selectively.Functional groups, including carboxyl, hydroxyl, amino significantly improve membrane's capacity capture particulate matter.Chemical etching precise deposition nanoparticles further optimize pore size distribution.The choice chemicals critical functionalization, silane coupling agents, polyethyleneimine, polydopamine.Future research prioritize refining methods, advancing strategies, conducting recyclability assessments hybrid composite materials.This will enhance integrated systems contribute development smart filters.

Language: Английский

Citations

0
Optimal design of agro-residue filled poly(lactic acid) biocomposites using an integrated CRITIC-CoCoSo multi-criteria decision-making approach DOI Creative Commons
László Lendvai, Sándor Kálmán Jakab, Tej Singh

et al.

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

Published: April 4, 2025

Abstract In recent years, there has been a rise in environmental awareness, leading to increased efforts develop eco-friendly materials as alternatives petroleum-based polymers. This study examined the performance optimization of poly(lactic acid) (PLA) biocomposites filled with agricultural byproducts at concentrations ranging from 0 20% by weight, highlighting their potential substitutes for commodity plastics. The agro-residues used fillers were flax seed meal and rapeseed straw. A hybrid decision-making algorithm was proposed, utilizing “criteria importance through inter-criteria correlation” (CRITIC) alongside “combined compromise solution” (CoCoSo), aimed identifying optimal alternative among evaluated samples. considered several attributes, including mechanical traits via tensile, flexural, impact tests, hardness, water absorption, biodegradation, production cost. findings revealed that strength properties, impact, most advantageous neat PLA. contrast, highest modulus values recorded biocomposite 20 wt% exhibit hardness agro-waste content rose, observed meal. on biodegradation indicates higher promotes disintegration, emerging effective additive this context. show adding various varying amounts affects properties differently. Hence, CRITIC-CoCoSo approach is utilized choose biocomposite. straw demonstrated physico-mechanical making it promising future applications.

Language: Английский

Citations

0