scholarly journals Properties of Kenaf Filled Unplasticized Polyvinyl Chloride Composites

2011 ◽  
Vol 471-472 ◽  
pp. 507-512 ◽  
Author(s):  
Mohd Firdaus Abdrahman ◽  
E.S. Zainudin
Keyword(s):  
Mechanical Performance ◽  
Natural Fiber ◽  
Stress Transfer ◽  
Phenyl Isocyanate ◽  
Fiber Reinforced ◽  
Renewable Materials ◽  
Kenaf Fiber ◽  
Plastic Composite ◽  
Lignocellulosic Fiber ◽  
The People

Combination of lignocellulosic fiber with thermoplastic is leading to the new areas of research in plastic composite field. Due to the problem of petroleum shortages and encouragement for reducing the dependence on fossil fuel products, thus increased the people interest in maximizing the utilize of renewable materials like kenaf fiber. By adding optimum natural fiber to thermoplastics could provide some cost reduction to the world of plastic industry as well as to dominance the agro-based industry. With a view to identifying the effect of fiber content and effect of coupling agent in kenaf fiber reinforced unplasticized poly (vinyl chloride) (UPVC) composite on the mechanical properties, the fiber and matrix mixture were mixed with poly [methylene poly (phenyl isocyanate)] (PMPPIC) using thermal mixing process followed by compression molding technique for the composite preparation that required for tensile characteristic (ASTM D638). The fiber loading were 10%, 20%, 30%, and 40% in weight. Since the kenaf fiber and UPVC are chemically different, the compatibility and dispersability of kenaf fiber in UPVC can be improved by lowering the surface energy of the fiber to make it less polar, consequently more similar to the plastic matrix. Generally, PMPPIC act as a bonding agent that facilitates the optimum stress transfer at the interface between fiber and matrix which gives an optimal mechanical performance of kenaf fiber reinforced UPVC composites. Meanwhile, the addition of 30% fiber contents with PMPPIC was successful to enhance the tensile properties and the efficiency of PMPPIC was verified using Fourier Transform Infra-Red (FTIR) spectroscopy.

scholarly journals Effect of Rot-, Fire-, and Water-Retardant Treatments on Jute Fiber and Their Associated Thermoplastic Composites: A Study by FTIR

Polymers ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2571
Author(s):  
Sweety Shahinur ◽  
Mahbub Hasan ◽  
Qumrul Ahsan ◽  
Nayer Sultana ◽  
Zakaria Ahmed ◽  
...  
Keyword(s):  
Product Development ◽  
Environmental Sustainability ◽  
Mechanical Performance ◽  
Natural Fiber ◽  
Jute Fiber ◽  
Thermoplastic Composites ◽  
Ftir Analysis ◽  
Renewable Materials ◽  
Weight Percentage ◽  
Chemical Treatments

Natural renewable materials can play a big role in reducing the consumption of synthetic materials for environmental sustainability. Natural fiber-reinforced composites have attracted significant research and commercial importance due to their versatile characteristics and multi-dimensional applications. As the natural materials are easily rotten, flammable, and moisture absorbent, they require additional chemical modification for use in sustainable product development. In the present research, jute fibers were treated with rot-, fire-, and water-retardant chemicals and their corresponding polymer composites were fabricated using a compression molding technique. To identify the effects of the chemical treatments on the jute fiber and their polymeric composites, a Fourier transformed infrared radiation (FTIR) study was conducted and the results were analyzed. The presence of various chemicals in the post-treated fibers and the associated composites were identified through the FTIR analysis. The varying weight percentage of the chemicals used for treating the fibers affected the physio-mechanical properties of the fiber as well as their composites. From the FTIR analysis, it was concluded that crystallinity increased with the chemical concentration of the treatment which could be contributed to the improvement in their mechanical performance. This study provides valuable information for both academia and industry on the effect of various chemical treatments of the jute fiber for improved product development.

Mechanical performance and moisture absorption of various natural fiber reinforced thermoplastic composites

2013 ◽  
Vol 130 (2) ◽  
pp. 969-980 ◽  
Author(s):  
Nicole-Lee M. Robertson ◽  
John A. Nychka ◽  
Kirill Alemaskin ◽  
John D. Wolodko
Keyword(s):  
Moisture Absorption ◽  
Mechanical Performance ◽  
Natural Fiber ◽  
Thermoplastic Composites ◽  
Fiber Reinforced

Biocomposites - State of the Art

2014 ◽  
Vol 657 ◽  
pp. 397-401
Author(s):  
Dragos Hodorogea
Keyword(s):  
Materials Science ◽  
Mechanical Performance ◽  
Natural Fiber ◽  
Fiber Type ◽  
Industrial Applications ◽  
Green Technology ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Plant Fibers

Due to ecological and sustainability constraints, in late years we see great achievements in green technology in the field of materials science. The development of high-performance biocomposites (made from natural resources) is increasing worldwide. The challenge in working with natural fiber reinforced composites is the large spectrum of possibilities for making them.Biocomposites properties are influenced by a number of variables, including the fiber type, environmental conditions (where the plant fibers are sourced), processing methods, and any modification of the fiber. It is well known that recently exists a large interest in the industrial applications of composites containing biofibers reinforced with biopolymers. The characteristics of reinforcing fibers used in biocomposites, including source, type, structure, composition, as well as mechanical properties, will be reviewed. The variety of biocomposite processing techniques as well as the factors (moisture content, fiber type and content, coupling agents and their influence on composites properties) affecting these processes will be discussed.Techniques for processing the natural fiber reinforced composites will be discussed based on thermoplastic matrices (compression molding, extrusion, injection molding, and thermoforming), and thermosets (resin transfermolding, sheet molding compound). Their influence on mechanical performance (tensile, flexural and impact properties) will be evaluated. Finally, the work will conclude with recent developments and future trends of biocomposites.

Effect of Water Absorption Rates on Fracture Toughness of Sisal Textile Fiber Reinforced Composites

2005 ◽  
Vol 297-300 ◽  
pp. 213-218 ◽  
Author(s):  
Yang Bae Jeon ◽  
Do Won Seo ◽  
Jae Kyoo Lim
Keyword(s):  
Fracture Toughness ◽  
Water Absorption ◽  
Mechanical Performance ◽  
Natural Fiber ◽  
Natural Fibers ◽  
Compact Tension ◽  
Polymer Matrices ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced

Using natural fibers that are inexpensive, lightweight and biodegradable, as the reinforcement for composites is difficult due to their poor interfacial properties between hydrophilic fiber and hydrophobic polymer matrices. It is necessary to evaluate fracture toughness of natural fiber reinforced composites according to water absorption rates to improve mechanical performance of those. In this study, compact tension fracture test was conducted to evaluate fracture toughness with the various specimens. The value of fracture toughness has the tendency to decrease as water absorption rate increases. And different surface treatment methods and different polymer matrices have influence on the value of fracture toughness.

scholarly journals Surface Modification of Kenaf Fiber Reinforced Epoxy based Composite

2019 ◽  
Vol 9 (2) ◽  
pp. 1204-1207
Keyword(s):  
Natural Fiber ◽  
Fiber Reinforced ◽  
Kenaf Fiber ◽  
Volume Percentage ◽  
The Public ◽  
Fiber Loading ◽  
Effect Of Treatment ◽  
Kenaf Fibers ◽  
Surface Modified ◽  
Composite Properties

In day today life, the awareness to the public along with the ease in the fabrication of polymers, has let to the frequent polymer useage. Few developing industries have started using the materials that are renewable. In the present work, the mechanical behavior of short un-treated and treated (KmNO4 ) kenaf fiber reinforced epoxy based composites was investigated. Fabrication of composite materials were carried out with volume percentage (10 %, 20 %, 30%) of treated and un treated kenaf fibers. The polymer used as matrix was epoxy resin. The composite was fabricated by using hand layup method. The various fiber loading was performed and their properties studied. The mechanical strength like tensile, flexural and impact of the composite was analysed. The effect of treatment had showed improvement in the composite properties. It was found that KmNO4 treatment and kenaf fiber loading has enhanced the synergetical effects on the composite. These chemically surface modified composites with natural fiber reinforcement can have a chief role in the development of structural component parts. These materials may be used for light weight applications, especially in automobile sector and structural components.

scholarly journals Mechanical Properties of Banana Fabric and Kenaf Fiber Reinforced Epoxy Composites: Effect of Treatment and Hybridization

2019 ◽  
Vol 8 (10) ◽  
pp. 1870-1874
Keyword(s):  
Mechanical Properties ◽  
Natural Fiber ◽  
Fiber Composite ◽  
Fiber Reinforced Composites ◽  
Synthetic Fiber ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Kenaf Fiber ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite

Nowadays, Natural Fiber Reinforced composites (NFCs) are emerging to be a good substitute for synthetic fiber reinforced composites as NFCs have many advantages such as low density, high specific strength, recyclability, low cost and good sound abatement quality etc. Among all types of NFCs, a vast study has been done on banana fiber and kenaf fiber reinforced composite. However, only limited work has been done on the banana fabric, kenaf fiber reinforced composite and the effect of their hybridization on mechanical properties. In this paper, an attempt has been made to study the mechanical properties of the banana fabric, kenaf fiber and hybrid banana fabric/kenaf fiber reinforced composites. Effect of alkali treatment on kenaf fiber reinforced composite is discussed in the paper. For the present work, plain-woven banana fabric and randomly oriented kenaf fiber are used as reinforcement while the epoxy resin is used as a matrix. samples are fabricated using hand lay-up and vacuum bagging method. Curing is done at ambient temperature (250C-300C) for 48h. Tensile, impact and hardness test has been performed on a specimen according to ASTM standards. Improvement in mechanical properties is observed after alkali (6% NaOH) treatment on kenaf fiber reinforced composite. Tensile testing behavior of randomly oriented kenaf fiber composite has been studied using Finite element method and results are compared with experimental investigations. This topic present big potential because it seeks to find solution for sustainable development with environmental concerns.

scholarly journals MECHANICAL PROPERTIES, WATER ABSORPTION, AND FAILURE ANALYSES OF KENAF FIBER REINFORCED EPOXY MATRIX COMPOSITES

2021 ◽  
Vol 22 (2) ◽  
pp. 316-326
Author(s):  
Ikhwan Yusuff ◽  
Norshahida Sarifuddin ◽  
Siti Norbahiyah Mohamad Badari ◽  
Afifah Mohd Ali
Keyword(s):  
Water Absorption ◽  
Natural Fiber ◽  
Mechanical Tests ◽  
Fiber Content ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Kenaf Fiber ◽  
Pull Out ◽  
Reinforced Polymer ◽  
Kenaf Composites

The potential of natural fibers as one of the candidate materials in the production of fiber-reinforced polymer composites have been widely investigated. In the current study, natural fiber-reinforced polymer composite was fabricated by employing woven kenaf fiber as a reinforcing agent with epoxy resin that acts as a matrix constituent. This composite sample was fabricated using the application of the vacuum infusion method in which the content of kenaf fibers was varied from 30 vol.%, 40 vol.%, and 50 vol.%. The effects of different fiber loadings toward mechanical and physical properties as well as failure properties of kenaf composite were then evaluated. Kenaf composites were subjected to mechanical tests including tensile and flexural tests. The result shows that the highest tensile strength and modulus were attained at 76.67 MPa and 2.31 GPa, respectively with kenaf composite fabricated with 40 vol.% fiber content. Meanwhile, the highest flexural strength and modulus were recorded at 61.24 MPa and 4.20 GPa, also corresponding to kenaf composite that is loaded with 40 vol.% fibers. Fiber pull-out failure was able to be detected in fabricated kenaf composites. Meanwhile, fiber breakage resulting from flexural failure could also be observed in the kenaf composite samples. Apart from that, it was found that as more kenaf fiber was loaded in the composites, the rate of water absorption tended to increase where the highest rate of water absorption was found at 43.33%, displayed by kenaf composite with 50 vol.% of fiber content. ABSTRAK: Potensi gentian semula jadi sebagai salah satu bahan dalam penghasilan komposit polimer bertetulang gentian telah banyak dikaji. Dalam kajian terkini, komposit polimer yang diperkuat dengan gentian semula jadi dibuat dengan menggunakan serat kenaf tenunan sebagai agen penguat dan resin epoksi yang bertindak sebagai matriks. Sampel komposit ini dibuat menggunakan kaedah infusi vakum di mana kandungan serat kenaf digunakan adalah 30 vol.%, 40 vol.%, dan 50 vol.%. Kesan kandungan serat yang berbeza terhadap sifat mekanikal dan fizikal serta sifat kegagalan komposit kenaf kemudiannya dinilai. Komposit Kenaf diuji dengan ujian tegangan dan lenturan. Hasilnya menunjukkan bahawa kekuatan tegangan dan modulus tertinggi dicapai pada 76.67 MPa dan 2.31 GPa, milik komposit kenaf yang dibuat dengan kandungan serat 40 vol.%. Sementara itu, kekuatan dan modulus lenturan tertinggi dicatatkan pada 61.24 MPa dan 4.20 GPa juga milik komposit kenaf yang dimuatkan dengan serat 40% vol. Kegagalan serat terkeluar dapat dikesan pada komposit kenaf buatan. Sementara itu, kerosakan serat akibat kegagalan lenturan juga dapat dilihat pada sampel komposit kenaf. Selain itu, didapati bahawa semakin banyak serat kenaf yang dimuatkan dalam komposit, cendurung meningkatkan kadar penyerapan air di mana kadar penyerapan air tertinggi didapati pada 43.33% yang ditunjukkan oleh komposit kenaf dengan kandungan serat 50% vol.

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