scholarly journals Performance of lightweight mortar reinforced with doum palm fiber

2020 ◽  
pp. 002199832097519
Author(s):  
Fatma Naiiri ◽  
Allègue Lamis ◽  
Salem Mehdi ◽  
Zitoune Redouane ◽  
Zidi Mondher
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Natural Fiber ◽  
Cement Mortar ◽  
Low Cost ◽  
Natural Fibers ◽  
Construction Materials ◽  
Mechanical And Thermal Properties ◽  
Palm Fiber ◽  
And Control

Natural fibers are increasingly used in composites because of their low cost and good mechanical properties. Cement reinforced with natural fibersis contemplates as a new generation of construction materials with superior mechanical and thermal performance. This study of three sizes’effect of Doum palm fiber explores the mortar’s behavior reinforced with different fiber ratio. The aim is to determine the optimal addition to improve mechanical and thermal properties of natural fiber reinforced cements. Physical, mechanical and thermal properties of composite are examined. Tensile properties of Doum fibers are verified to determine their potential as reinforced material. Findings prove that the use of alkali-treated Doum fiber as reinforcement in cement mortar composite leads to the upgrading of the mechanical properties including thermo-physical properties against composites reinforced with raw fibers and control cement mortars. While, the compression and flexural strength of the cement mortar reinforced with alkali-treated Doum fiber with diameter 0.3 mm (CT3) are metered to be 11.11 MPa, 5.22 MPa, respectively for fiber content 0.5%. Additionally, based on thermo-physical tests, it is assessed that the thermal conductivity and diffusivity decrease for cement mortar reinforced with Doum fiber with diameter 0.2 mm (CT2).

scholarly journals Preparation and recycling of polymer eco-composites I. comparison of the conventional molding techniques for preparation of polymer eco-composites

2009 ◽  
Vol 28 (1) ◽  
pp. 99 ◽  
Author(s):  
Vineta Srebrenkoska ◽  
Gordana Bogoeva Gaceva ◽  
Dimko Dimeski
Keyword(s):  
Mechanical Properties ◽  
Maleic Anhydride ◽  
Injection Molding ◽  
High Performance ◽  
Natural Fiber ◽  
Construction Materials ◽  
Hibiscus Cannabinus ◽  
Mechanical And Thermal Properties ◽  
Rice Hulls ◽  
Kenaf Fibers

The interest in natural fiber-reinforced polymer composites is growing rapidly due to their high performance in terms of mechanical properties, significant processing advantages, excellent chemical resistance, low cost and low density. In this study, the compression and injection molding of polypropylene (PP) and polylactic acid (PLA) based composites reinforced with rice hulls or kenaf fibers was carried out and their basic properties were examined. Rice hulls from rice processing plants and natural lignocellulosic kenaf fibers from the bast of the plant Hibiscus Cannabinus represent renewable sources that could be utilized for composites. Maleic anhydride grafted PP (MAPP) and maleic anhydride grafted PLA (MAPLA) were used as coupling agents (CA) to improve the compatibility and adhesion between the fibers and the matrix. Composites containing 30 wt % reinforcement were manufactured by compression and injection molding, and their mechanical and thermal properties were compared. It was found that the techniques applied for manufacturing of the eco-composites under certain processing conditions did not induce significant changes of the mechanical properties. The flexural strength of the compressed composite sample based on PP and kenaf is 51. 3 MPa in comparison with 46.7 MPa for the same composite produced by injection molding technique. Particularly, PP-based composites were less sensitive to processing cycles than PLA-based composites. The experimental results suggest that the compression and injection molding are promising techniques for processing of eco-composites. Moreover, the PP-based composites and PLA-based composites can be processed by compression and injection molding. Both composites are suitable for applications as construction materials.

Review of Natural Fiber Reinforced Elastomer Composites

2018 ◽  
Author(s):  
Pantea Kooshki ◽  
Tsz-Ho Kwok
Keyword(s):  
Mechanical Properties ◽  
Natural Fiber ◽  
Low Cost ◽  
Natural Fibers ◽  
Fiber Surface ◽  
Specific Strength ◽  
Elastomeric Matrix ◽  
The Matrix ◽  
Fiber Matrix ◽  
Physical Treatments

This paper is a review on mechanical characteristics of natural fibers reinforced elastomers (both thermoplastics and thermosets). Increasing environmental concerns and reduction of petroleum resources attracts researchers attention to new green eco-friendly materials. To solve these environmental related issues, cellulosic fibers are used as reinforcement in composite materials. These days natural fibers are at the center of attention as a replacement for synthetic fibers like glass, carbon, and aramid fibers due to their low cost, satisfactory mechanical properties, high specific strength, renewable resources usage and biodegradability. The hydrophilic property of natural fibers decreases their compatibility with the elastomeric matrix during composite fabrication leading to the poor fiber-matrix adhesion. This causes low mechanical properties which is one of the disadvantages of green composites. Many researches have been done modifying fiber surface to enhance interfacial adhesion between filler particles and elastomeric matrix, as well as their dispersion in the matrix, which can significantly affect mechanical properties of the composites. Different chemical and physical treatments are applied to improve fiber/matrix interlocking.

Available Mechanical and Chemical Properties of Natural Fibers

2018 ◽  
pp. 110-136
Keyword(s):  
Mechanical Properties ◽  
Moisture Absorption ◽  
Natural Fiber ◽  
Low Cost ◽  
Natural Fibers ◽  
Chemical Properties ◽  
Low Energy ◽  
Synthetic Fibers ◽  
The Right ◽  
And Chemical Properties

Natural fibers are so attracting in comparison to synthetic fibers since they exhibit good properties like the low cost, good specific mechanical properties and their requirements of low energy during production. However, natural fibers hold some drawbacks which must be consider in comparison to the synthetic fibers like their high moisture absorption, low mechanical properties, heat resistance and durability and the variation in their prices and quality. In order to choose the suitable natural fiber for the selected application, their mechanical and chemical properties can be helpful for taking the right decision. In this chapter, a wide research is done in order to provide as much as possible the available mechanical and chemical properties of natural fibers of bast, leaf, seed, stalk, and wood categories from the most trusted publications. The specific mechanical properties of natural fibers are then calculated for a better comparison at the level of composites.

Aprovechamiento de fibras tejidas de yute como material de refuerzo en biocompuestos de ácido poliláctico//Use of jute woven fibers as reinforcement material in polylactic acid biocomposites

Biotecnia ◽  
2019 ◽  
Vol 22 (1) ◽  
pp. 67-73
Author(s):  
Heidy Burrola-Núñez ◽  
Pedro Jesús Herrera-Franco ◽  
Herlinda Soto-Valdez ◽  
Dora Evelia Rodríguez-Félix ◽  
Rodrigo Meléndrez-Amavizca ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Maleic Anhydride ◽  
Polylactic Acid ◽  
Low Cost ◽  
Natural Fibers ◽  
Mechanical And Thermal Properties ◽  
Jute Fibers ◽  
Reinforcement Material ◽  
Reinforcing Material ◽  
And Storage

El aprovechamiento de residuos agroindustriales es una opción que beneficia al medio ambiente. Durante la elaboración de productos con fibras tejidas de yute (FTY) se generan fragmentos, los cuales no tienen un uso específico. En este trabajo, se propone la utilización de residuos de FTY como material de refuerzo en láminas de ácido poliláctico (PLA), como una alternativa ecológica y sustentable de obtener biocompuestos biodegradables a bajo costo que puedan sustituir a los plásticos provenientes del petróleo. Con el objetivo de mejorar la compatibilidad de las FTY y el PLA se utilizaron tratamientos fisicoquímicos en las fibras como la irradiación gamma (IG) y la funcionalización con anhídrido maleico (AM). Los resultados de los biocompuestos de PLA/ FTY (AM) revelaron mejoras en las propiedades mecánicas y térmicas comparadas con el PLA puro; con un incremento en los módulos elástico, de flexión y almacenamiento del 48%, 6% y 23 %, respectivamente. Esto entreabre la posible aplicación de los biocompuestos de PLA/FTY en envases rígidos, así como el camino para el aprovechamiento de otras fibras naturales usadas localmente.ABSTRACTThe use of agroindustry waste is an option that benefits the environment. During the production of products with woven jute fibers (WJF) fragments are generated which do not have a specific use. In this work, we propose the use of WJF residues as a reinforcing material in laminates of polylactic acid (PLA) as an ecological and sustainable alternative to obtain low cost biodegradable biocomposites that can replace petroleum plastics. In order to improve the WJF and PLA compatibility, physicochemical treatments were used in fibers such as gamma irradiation (GI) and functionalization with maleic anhydride (MA). The results of PLA/WJF (MA) biocomposites revealed improvements in the mechanical and thermal properties compared to neat PLA; with an increase in elastic, flexural and storage modules of 48%, 6%, and 23%, respectively. This opens up the possible application of PLA/ WJF biocomposites in rigid containers, as well as the way to take advantage of other natural fibers used locally.

Characterization and thermal kinetic analysis of pineapple leaf fibers and their reinforcement in epoxy

2018 ◽  
Vol 51 (3) ◽  
pp. 224-243 ◽  
Author(s):  
Jyoti Jain ◽  
Shorab Jain ◽  
Shishir Sinha
Keyword(s):  
Mechanical Properties ◽  
Low Cost ◽  
Natural Fibers ◽  
Mechanical And Thermal Properties ◽  
Heating Rates ◽  
Electron Microscopic ◽  
Fiber Loading ◽  
Low Weight ◽  
Epoxy Material ◽  
Thermal Kinetic Analysis

The progress in the development of composites with natural fibers for various applications in different sectors witnesses remarkable success worldwide in the last decade. Among the various natural fibers existing worldwide, pineapple leaf fibers (PALFs) possess remarkable mechanical properties because of the maximum content of cellulose (∼80%) among all natural fibers. In spite of having few limitations such as hydrophilicity, its advantages such as low cost, low weight, and biodegradability overweigh their limitations. The PALFs are poorly reported in the literature as a reinforcement in epoxy material. Bagasse, wheat straw, and coir have been successfully reinforced with epoxy resin; but inspite of having highest tensile strength among all natural fibers, PALF’s are seldom used. PALF has been characterized chemically, morphologically, and thermally. Using thermal analysis, the models were fitted to calculate its activation energies at different fraction levels using different heating rates. PALF epoxy composites have been prepared using the hand layup method. The effect of fiber loading has also been studied for morphological, chemical, mechanical, and thermal properties of composites. Composites with 10% fiber loading have better mechanical properties in comparison to composites with other fiber loading. Scanning electron microscopic micrographs of fractured surfaces have been analyzed for all fiber loading composites, and the results have been successfully studied linking the stated work of other distinguished researchers of this arena.

Effects of Fiber Surface Treatment on Mechanical and Thermal Properties of Coir-MCC/Polylactic Acid Composites

2012 ◽  
Vol 488-489 ◽  
pp. 638-642 ◽  
Author(s):  
Tanawat Tayommai ◽  
Duangdao Aht-Ong
Keyword(s):  
Mechanical Properties ◽  
Thermal Properties ◽  
Surface Treatment ◽  
Polylactic Acid ◽  
Natural Fiber ◽  
Fiber Surface ◽  
Mechanical And Thermal Properties ◽  
Coir Fibers ◽  
Twin Screw ◽  
Fiber Surface Treatment

Biodegradable plastic reinforced natural fiber composites are finding applications in many fields ranging from construction industry to food industry. The use of natural bio based fillers as reinforcements in composites has several advantages over inorganic fillers including lower density, renewability, and biodegradability. In this research, polylactic acid (PLA)/ microcrystalline cellulose (MCC) composites were investigated as a means to reduce the material cost and enhance the material properties. The coir fibers were used to prepare microcrystalline. Subsequently, the prepared MCC was treated with 3-amiopropyl triethoxysilane (APS) to improve interfacial adhesion between fiber and polymer matrix. Treated and untreated MCC were then mixed at 0-10 wt.% with PLA by twin-screw extruder and fabricated into test specimens by compression molding. The effects of MCC loading and surface treatment on morphology, mechanical properties, and thermal properties of PLA/MCC composites were investigated. The results showed that the PLA with 5 wt.% of MCC exhibited the best mechanical properties compared with all prepared composites. Thermal stability of PLA composites were decreased with increasing MCC content but it can be improved by treated the MCC with APS.

scholarly journals Fabrication, Characterization and Moisture Absorption Analysis of Sponge Fiber-Coir Reinforced Epoxy Resin Hybrid Composite

2020 ◽  
Vol 9 (1) ◽  
pp. 2744-2751
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Moisture Absorption ◽  
Natural Fiber ◽  
Low Cost ◽  
Matrix Material ◽  
Natural Fibers ◽  
Weight Percentage ◽  
Sponge Gourd ◽  
The Impact

Natural fiber reinforced composites are gaining popularity over conventional materials due its low cost, easy accessibility, non toxicity and most important feature - the biodegradability. Since broad varieties of natural fibers are available on earth, hence their merits can be incorporated in one by means of hybridization. Matured sponge gourd, which turns into a net structured fibrous mass on sun drying, is amalgamated with coconut coir as reinforcement along with epoxy resin as matrix material in a composite. The present study was carried out to explore the impact of change in weight percentages of sponge gourd fiber and coir on the mechanical properties and moisture affinity. The alkali treated fibers were turned into composites by dint of Hand Layup technique. The various mechanical properties were evaluated according to ASTM protocol. After the successful conclusion of the experiments, it was found that composite with maximum weight percentage of coir showed superlative tensile and impact strength whereas the composite with highest sponge fibre content showed maximum flexural strength. The composite with equal sponge fiber-coir weight percentage displayed lowest affinity towards moisture.

scholarly journals Natural fiber reinforced polymer composite and their tensile properties – a review

2020 ◽  
Vol 9 (2) ◽  
pp. 1103-1110
Keyword(s):  
Mechanical Properties ◽  
Polymer Composites ◽  
Natural Fiber ◽  
Low Cost ◽  
Natural Fibers ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Specific Strength ◽  
Reinforced Polymer ◽  
Fiber Reinforced Polymer Composites

There has been a growing interest to produce composite polymeric materialsusing natural fibers as reinforcement. Scientists prefer natural fiber as a reinforced material to make polymer composites due to their bio-degradability characteristics,strong mechanical properties, high specific strength, low cost, non-abrasiveand ecofriendly nature . This review presents the reported work on natural plant based fiber reinforced polymer composites with special reference to the type of natural fibers and host polymers. Various fiber treatments, which are carried out to improve the fiber– hostadhesion, improved mechanical properties that greatly increase the application of these polymer composites specially in automobile industries and bioapplications are highlighted.

ECO-BIOCOMPOSITE MATERIALS FOR SHOCK CUSHIONING APPLICATION: AN OUTLOOK OF THE POTENTIALS AND CHALLENGES

2015 ◽  
Vol 76 (5) ◽  
Author(s):  
David, N. V. ◽  
Siti Syahidah M. Rum
Keyword(s):  
Biodegradable Polymer ◽  
Natural Fiber ◽  
Low Cost ◽  
Natural Fibers ◽  
Mechanical And Thermal Properties ◽  
Low Carbon ◽  
Processing Technologies ◽  
Low Carbon Economy ◽  
Fiber Matrix ◽  
By Products

Recently there is an increased concern for the development of not only well-designed but also sustainable materials. Material sustainability is associated with the extraction of renewable resources and disposal procedures that would not injure our ecosystem. In this respect, indigenous agricultural wastes or by-products are suitable alternatives to lightweight and disposable green-materials at low cost. Agro-waste and biomass materials are plentiful in many parts of the world including Malaysia. Fibers obtained from agricultural by-products are often used as fillers or reinforcement in non-biodegradable polymer matrix. Polylactic acid (PLA), which is a compostable and biodegradable thermoplastic, is derived from renewable agro-sources such as potato, corn, or sugarcane. The mechanical and thermal properties of select biofibers-filled PLA composites are comparable to that of the composites made from conventional fibers. Research findings imply the feasibility of processing PLA with natural fibers such as kenaf using existing manufacturing technologies. Natural fiber filled biodegradable polymer composite materials have the advantage of simple and safe disposal over petroleum-based polymers besides generating new low-carbon economy for the plantation sector. However, research outcomes show that the fiber/matrix interface of PLA and natural fiber is weak due to incompatible surface properties of the two material types. In this article, issues pertaining to fiber/matrix interfacial adhesion, potential renewable sources of polymers and processing technologies of natural fiber (or –eco)-biocomposite materials are reviewed. The prospect of replacing traditional polymers obtained from non-renewable fossil resources with biopolymers to develop sustainable eco-biocomposite materials for shock cushioning application such as for packing and packaging materials is discussed in particular.

EFFECT OF PINEAPPLE LEAF FIBER LOADING ON THE MECHANICAL PROPERTIES OF PINEAPPLE LEAF FIBER – POLYPROPYLENE COMPOSITE

2015 ◽  
Vol 77 (21) ◽  
Author(s):  
Ayu Natasya Kasim ◽  
Mohd Zulkefli Selamat ◽  
Nabila Aznan ◽  
Siti Norbaya Sahadan ◽  
Mohd Ahadlin Mohd Daud ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Natural Fiber ◽  
Low Cost ◽  
Natural Fibers ◽  
Alkaline Treatment ◽  
Fiber Loading ◽  
Pineapple Leaf Fiber ◽  
The Many ◽  
Composition Ratios ◽  
Leaf Fiber

Natural fibers have become an important issue in the development of fiber reinforced polymer (FRP) composite to resolve the current ecological and environmental problems. Among the many types of natural fibers that are available, pineapple leaf fiber (PLF) was selected as the natural fiber used in this study due to comparatively better mechanical properties, ease of availability and low cost. In this work, the effects of pineapple leaf fiber (PLF) loading on the properties of PLF/polypropylene (PP) composites was studied. The sample of composites was fabricated with five different fiber loading of PLF (30, 40, 50, 60 and 70 wt.%). An alkaline treatment was conducted to enhance the PLF properties. The fabrication was made by compression molding technique with random orientation of PLF. From the experimental study, the results revealed that the voids percentage and interfacial bonding between the PLF and PP affected the mechanical properties of the PLF/PP composite. Based on the results of tensile stress, hardness and density, it can be concluded that the PLF/PP composite with the composition ratio of 30/70 wt.% has shown the best mechanical properties compared to other composition ratios (40/60, 50/50, 60/40 and 70/30 wt.%), which are 16.71 MPa, 62.83 Shore-D and 0.93 g/cm³ respectively.

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