Effects of Olive Pit and Almond Shell Powder on Polypropylene

2017 ◽  
Vol 733 ◽  
pp. 65-68 ◽  
Author(s):  
Munir Tasdemir
Keyword(s):  
Glass Fibers ◽  
Natural Fibers ◽  
Morphological Properties ◽  
Almond Shell ◽  
Synthetic Fibers ◽  
Free Disposal ◽  
Green Materials ◽  
Petroleum Resources ◽  
The Cost ◽  
Shell Powder

The outgrowing ecological and socio-economic awareness, high consumption of petroleum resources and new environmentally strong regulations especially in European countries have prompted researchers to investigate on green materials compatible with the environment. As replacements for conventional synthetic fibers like aramid and glass fibers, natural fibers are increasingly used for reinforcement in thermoplastics due to their low density, good thermal insulation and mechanical properties, reduced tool wear, unlimited availability, low price, and problem-free disposal. The purpose for the addition of cellulose-based fillers to thermoplastics is to reduce the cost per unit volume and to improve stiffness.In the present work I have prepared a series of filled Polypropylene (PP) composites with olive pit and almond shell flour loading (between 0–40 wt %), to study the effect of the filler content on the mechanical and morphological properties of polypropylene polymer composites.

Production and mechanical characterization of LLDPE biocomposite filled with almond shell powder

2020 ◽  
pp. 096739112091086
Author(s):  
M Boujelben ◽  
M Abid ◽  
M Kharrat ◽  
M Dammak
Keyword(s):  
Natural Fibers ◽  
Almond Shell ◽  
Synthetic Fibers ◽  
Hardness Tests ◽  
Great Performance ◽  
Similar Density ◽  
Shell Powder ◽  
Strength And Ductility ◽  
A Current

Substitution of synthetic polymers by polymers prepared from renewable resources as well as synthetic fibers by natural fibers is a current research topic. They target various sectors of application such as the automotive industry, transport, packaging, building, and so on, that can offer a solution of lightness, great performance, and a minimum impact on the environment. In the present study, biocomposites based on linear low-density polyethylene (LLDPE) reinforced with nonchemically treated and noncompatibilized almond shell powder (ASP) particles were prepared by an elaboration process based on mixing polymer powder with ASP particles having similar density in solid state. For consolidation, thermocompression technique has been used. The mass ratio of ASP in the LLDPE/ASP composites varied from 10 wt% to 40 wt%. Effects of ASP wt% on the mechanical and structural properties of biocomposites have been explored through tensile and shore D hardness tests as well as microscopic observations. Homogenous repartition of ASP particles in the polymer matrix was observed for less than 20 wt% ASP. For more than 20 wt% ASP, agglomeration of fillers particles has been observed. Also, it has been found that elastic modulus of the biocomposites increases with ASP particles wt%, while tensile strength and ductility decrease when the ASP wt% increases.

The mechanical, thermal and sound absorption properties of flexible polyurethane foam composites reinforced with artichoke stem waste fibers

2020 ◽  
pp. 152808372093419 ◽  
Author(s):  
Hilal Olcay ◽  
Emine Dilara Kocak
Keyword(s):  
Mechanical Properties ◽  
Polyurethane Foam ◽  
Renewable Resources ◽  
Alkali Treatment ◽  
Natural Fibers ◽  
Morphological Properties ◽  
Sound Insulation ◽  
Synthetic Fibers ◽  
Flexible Polyurethane ◽  
Properties Of Composites

Recently, due to environmental concerns and dependence on depleted resources, the use of renewable resources has become important in the preparation of various industrial materials. The use of natural fibers instead of petroleum-based synthetic fibers traditionally used in the production of composite materials provides many advantages in terms of both environmental and cost. The utilization of agricultural wastes as natural fibers also contributes significantly to the reduction and reuse of wastes, which is one of the objectives of sustainable development. In this study, artichoke stem waste fibers reinforced polyurethane foam composites were obtained. The fibers were treated with alkaline surface treatment at different concentrations (5% and 10%) of sodium hydroxide (NaOH) and durations (5, 10 and 15 min). The optimal alkali method was determined and applied to the fibers and its effect on composites was also investigated. Treated and untreated fibers were combined with polyurethane (PU) matrix at different reinforcement ratios (5, 10, 15 and 20%) to produce bio-fiber based composites. Depending on these reinforcement rates and alkali treatment, the mechanical properties of composites such as strength, elongation and modulus were investigated. The composites, which have the best mechanical properties, were selected and these composites were evaluated in terms of thermal and sound insulation with considering their morphological properties. It has been determined that artichoke stem waste fibers can provide good mechanical, thermal and sound insulation properties in the composites, and thus it has been found that great advantages can be achieved in terms of cost and ecology.

Effects of Matrix on Mechanical Property Test Bamboo Fiber Composite Materials

2005 ◽  
Vol 297-300 ◽  
pp. 1529-1533
Author(s):  
Jae Kyoo Lim ◽  
Jun Hee Song ◽  
Jun Yong Choi ◽  
Hyo Jin Kim
Keyword(s):  
Natural Fiber ◽  
Fiber Composite ◽  
Natural Fibers ◽  
Bamboo Fiber ◽  
Thermoplastic Composite ◽  
Fiber Reinforced ◽  
Synthetic Fibers ◽  
The Past ◽  
The Cost ◽  
Fiber Composite Materials

In recent years, the use of natural fibers as reinforcements in polymer composites to replace synthetic fibers like glass is presently receiving increasing attention. Because of their increasing use combined with high demand, the cost of thermosetting resin has increased rapidly over the past decades. However the widely used synthetic fillers such as glass fiber are very expensive compared to natural fibers. Natural fiber-reinforced thermosetting composites are more economized to produce than the original thermosetting. Moreover the use of natural fiber in thermosetting composites is highly beneficial, because the use of natural fibers will be increased. In this study, a bamboo fiber-reinforced thermoplastic composite that made the RTM was evaluated to mechanical properties.

Characterization of groundnut shell powder as a potential reinforcement for biocomposites

2021 ◽  
pp. 204124792110087
Author(s):  
Mohammed Awwalu Usman ◽  
Ibrahim Momohjimoh ◽  
Abdulhafiz Onimisi Usman
Keyword(s):  
Sodium Hydroxide ◽  
Natural Fiber ◽  
Glass Fibers ◽  
Natural Fibers ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Consequent Reduction ◽  
Groundnut Shell ◽  
The Right ◽  
Shell Powder

Natural fibers are becoming the right candidate material as a substitute for glass fibers in the reinforcement of plastic polymers for various applications. The ease of their processing with minimal energy consumption and the quest to produce biodegradable plastics with lightweight has given natural fibers comparative advantages over synthetic fibers. In this study, groundnut shell powder (GSP) in different forms (untreated, sodium hydroxide treated and ash) were characterized using X-ray diffraction (XRD), Fourier transform infrared (FTIR), X-ray fluorescence (XRF), Nuclear magnetic resonance (NMR), Differential scanning calorimetry (DSC) and Scanning electron microscopy (SEM) to evaluate their possible utilization as reinforcement in polymers. GSP was treated with sodium hydroxide for 5 hrs and dried in vacuum for 24 hrs to obtain treated GSP while ash GSP was formed by heating GSP in the furnace at 600 °C for about 3 hrs. The results reveal that sodium hydroxide treatment was very effective in the breaking down of the hydrogen bond with a consequent reduction in the hydrophilicity of the GSP. This would promote GSP bonding with the hydrophobic polymer matrix in the development of natural fiber reinforced plastic polymer composite materials. Ash GSP was found to have the highest crystallinity among the three forms of GSP based on XRD results. Therefore, the result achieved in this work confirmed that treated and ash GSP fibers are good reinforcement material in the production of polymer composites, with the actual choice depending on end-use property requirements of the composite.

scholarly journals Hybrid Cellulose-Glass Fiber Composites for Automotive Applications

Materials ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3189 ◽  
Author(s):  
Annandarajah ◽  
Langhorst ◽  
Kiziltas ◽  
Grewell ◽  
Mielewski ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Fiber Composite ◽  
Glass Fibers ◽  
Flexural Modulus ◽  
Natural Fibers ◽  
Polyamide 6 ◽  
Morphological Properties ◽  
Hybrid Fibers ◽  
Glass Fiber Composites

: In the recent years, automakers have been striving to improve the carbon footprint of their vehicles. Sustainable composites, consisting of natural fibers, and/or recycled polymers have been developed as a way to increase the “green content” and reduce the weight of a vehicle. In addition, recent studies have found that the introduction of synthetic fibers to a traditional fiber composite such as glass filled plastics, producing a composite with multiple fillers (hybrid fibers), can result in superior mechanical properties. The objective of this work was to investigate the effect of hybrid fibers on characterization and material properties of polyamide-6 (PA6)/polypropylene (PP) blends. Cellulose and glass fibers were used as fillers and the mechanical, water absorption, and morphological properties of composites were evaluated. The addition of hybrid fibers increased the stiffness (tensile and flexural modulus) of the composites. Glass fibers reduced composite water absorption while the addition of cellulose fibers resulted in higher composite stiffness. The mechanical properties of glass and cellulose filled PA6/PP composites were optimized at loading levels of 15 wt% glass and 10 wt% cellulose, respectively.

scholarly journals Optimization of extraction techniques for processing and utilization of Cyperus Dichrostachus A. Rich Plant as fiber

2022 ◽  
Author(s):  
BELETE BAYE Gelaw ◽  
Tamrat Tesfaye
Keyword(s):  
Textile Industry ◽  
Raw Materials ◽  
Energy Requirement ◽  
Natural Fibers ◽  
Extraction Methods ◽  
High Price ◽  
Process Conditions ◽  
Synthetic Fibers ◽  
Fiber Yield ◽  
Green Materials

Abstract The Textile industry is an important contributor to the GDP of countries worldwide. Both natural and synthetic fibers are the main raw materials for this sector. Environmental concerns, depletion of non-renewable resources, the high price of oil and limited oil reserves with consumer demand is driving research into cheap, biodegradable, sustainable, renewable and abundantly available green materials. Natural fibers are of the good substitute sources for swapping synthetic fibers and reinforcing polymer matrices because of their contributions in maintaining of ecology, nature of disposal, low energy requirement for processing and sustainability. The current research emphases on evaluating and determining the best extraction methods to process and treat cyperus Dichrostachus A.Rich plant in order to make the fiber suitable for variety of applications. Cyperus Dichrostachus A.Rich plant was treated with two conditions (cold and warm conditions) using statistically planned tests. Process conditions were optimised using central composite design methodology with the experimental design. Under optimised conditions, the strength and fiber yield of CDA fibers were significantly compared. The strength and fiber yield of the fiber was at maximized with optimized conditions and use for valorisation applications.

scholarly journals STUDY ON PREPARATION OF BAMBOO FIBER REINFORCED UNSATURATED POLYESTER RESIN "GREEN" COMPOSITES

2012 ◽  
Vol 15 (3) ◽  
pp. 5-14
Author(s):  
Thanh Duy Tran ◽  
Tai Tan Dang
Keyword(s):  
Mechanical Properties ◽  
Composite Materials ◽  
Unsaturated Polyester ◽  
Low Cost ◽  
Glass Fibers ◽  
Natural Fibers ◽  
Green Composite ◽  
Polyester Resins ◽  
Neat Polymer ◽  
Synthetic Fibers

Composite materials are usually made with organic matrixes reinforced by synthetic fillers, such as carbon or glass fibers.... But the high cost and environmental awareness of the synthetic fibers has limited their application. Meanwhile, natural fibers have been very attractive because they have been low cost, low density, eco-friendly, available in high quantities, renewable, biodegradable and shown excellent mechanical properties. In this study, green composite materials were prepared by using unsaturated polyester resins and bamboo fibers. The fibers were previously modified by chemical treatment and inserted into matrix in the role of the reinforcement. Some factors effecting to properties of products showed more advantages than modifier content were studied meticulously. As a result, composite products showed more advantages than neat polymer. For example, it does not only improve significantly mechanical properties but also becomes cheaper and friendlier with environment.

PU composites based on different types of textile fibers

2021 ◽  
pp. 002199832110316
Author(s):  
Nuno Gama ◽  
B Godinho ◽  
Ana Barros-Timmons ◽  
Artur Ferreira
Keyword(s):  
Thermal Conductivity ◽  
Raw Materials ◽  
Natural Fibers ◽  
Tensile Modulus ◽  
High Water ◽  
Textile Fibers ◽  
Synthetic Fibers ◽  
Hydrophilic Nature ◽  
Different Types ◽  
Recycled Composites

In this study polyurethane (PU) residues were mixed with residues of textile fibers (cotton, wool and synthetic fibers up to 70 wt/wt) to produce 100% recycled composites. In addition, the effect of the type of fiber on the performance of the ensuing composites was evaluated. The presence of fibers showed similar effect on the density, reducing the density in the 5.5-9.0% range. In a similar manner, the addition of fillers decreased their thermal conductivity. The 70 wt/wt wool composite presented 38.1% lower thermal conductivity when compared to the neat matrix, a reduction that was similar for the other type of fibers. Moreover, the presence of fillers yields stiffer materials, especially in the case of the Wool based composites, which with 70 wt/wt of filler content increased the tensile modulus of the ensuing material 3.4 times. This was attributed to the aspect ratio and stiffness of this type of fiber. Finally, the high-water absorption and lower thermal stability observed, especially in the case of the natural fibers, was associated with the hydrophilic nature of fibers and porosity of composites. Overall, the results suggest that these textile-based composites are suitable for construction and automotive applications, with the advantage of being produced from 100% recycled raw-materials, without compromised performance.

scholarly journals Natural Plant Fiber Composites-Constituent Properties and Challenges in Numerical Modeling and Simulations

2017 ◽  
Vol 09 (04) ◽  
pp. 1750045 ◽  
Author(s):  
Yucheng Zhong ◽  
Umeyr Kureemun ◽  
Le Quan Ngoc Tran ◽  
Heow Pueh Lee
Keyword(s):  
Carbon Fibers ◽  
Renewable Resources ◽  
Natural Fibers ◽  
Fiber Composites ◽  
Future Research ◽  
Plant Fiber ◽  
Plant Fibers ◽  
Natural Plant ◽  
Synthetic Fibers ◽  
Review Reports

Natural fibers are extracted from natural resources such as stems of plants. In contrast to synthetic fibers (e.g., carbon fibers), natural fibers are from renewable resources and are eco-friendlier. Plant fibers are important members of natural fibers. Review papers discussing the microstructures, performances and applications of natural plant fiber composites are available in the literature. However, there are relatively fewer review reports focusing on the modeling of the mechanical properties of plant fiber composites. The microstructures and mechanical behavior of plant fiber composites are briefly introduced by highlighting their characteristics that need to be considered prior to modeling. Numerical works that have already been carried out are discussed and summarized. Unlike synthetic fibers, natural plant fiber composites have not received sufficient attention in terms of numerical simulations. Existing technical challenges in this subject are summarized to provide potential opportunities for future research.

Substitution of Synthetic Fibers by Bio-Based Fibers in a Structural Mortar

2022 ◽  
Author(s):  
Marie Audouin ◽  
Nicolas Philippe ◽  
Fabien Bernardeau ◽  
Mariann Chaussy ◽  
Sergio Pons Ribera ◽  
...  
Keyword(s):  
Carbon Capture ◽  
Natural Fibers ◽  
Second Step ◽  
Synthetic Fibers ◽  
Chemical Treatments ◽  
Formulation Parameters ◽  
Metallic Fibers ◽  
Important Objective ◽  
Over Time ◽  
Selection Of

The use of bio-based material is now widespread in insulation concrete, for example hemp concrete. The bio-based materials in concrete provide many advantages: lightness, sound and thermal insulation, hydrothermal regulation while contributing to a reduction in the environmental impact due to the carbon capture during the plant growth. The development of materials incorporating plant is therefore an important objective for the construction. The next step will be to introduce bio-based materials in structural mortars and concretes. The project FIBRABETON proposes to substitute synthetic or metallic fibers by natural fibers in screed and slab. After a selection of biomass on the resources availability, separation and fractionation are the key step in processing to obtain technical natural fibers. Bulk fiber shaping and packaging methods for easy handling and transportation are tested. Then, functionalization of technical natural fibers by physical & chemical treatments to improve the durability with cement paste is carried out. The second step concerns the introduction of treated or not treated fibers in mortar and concrete formulations. The variation of the nature of the biomass, fibers shape and dosage in concrete are studied. The workability, the compressive strength and withdrawal resistance are measured in order to obtain the best formulation parameters. The evolution of properties over time is also evaluated. The project FIBRABETON is carried out with ESTP, FRD and Vicat and is subsidized by ADEME, Grand Est region and FEDER.

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