Abstract This research proposes the development of polymeric composites reinforced with natural fibres to become stronger the damaged timber structures and proposes thermal and mechanical characterization of these composites. Fibres with larger structural applications are glass and carbon fibres but the use of natural fibres is an economical alternative and possesses many advantages such as biodegradability, low cost and is a renewable source. Woven sisal fabric was submitted to heat treatment before moulding and the influence of moisture content of fibres on the composites behaviour was observed. The paper presents mechanical characterization by tensile and flexural strength of woven sisal fabric composites, with and without thermal treatment (at 60 °C for 72 h) on the fabric, thermal characterization by TGA and the manufacturing process by compression moulding. Experimental results show to sisal/phenolic composites a tensile strength and a flexural strength value of 25.0 MPa and 11.0 MPa, respectively, independent to the use of sisal fibres with or without thermal treatment.
#1Harry S. Ku(University of Southern Queensland)H-Index: 20
#2Hao Wang(University of Southern Queensland)H-Index: 108
Last. M. Trada(University of Southern Queensland)H-Index: 7
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This paper is a review on the tensile properties of natural fibre reinforced polymer composites. Natural fibres have recently become attractive to researchers, engineers and scientists as an alternative reinforcement for fibre reinforced polymer (FRP) composites. Due to their low cost, fairly good mechanical properties, high specific strength, non-abrasive, eco-friendly and bio-degradability characteristics, they are exploited as a replacement for the conventional fibre, such as glass, aramid an...
The use of natural fibers as reinforcement in polymeric composites for technical applications has been a research subject of scientists during the last decade. There is a great interest in the application of sisal fiber as substitutes for glass fibers, motivated by potential advantages of weight saving, lower raw material price, and ecological advantages of using green resources which are renewable and biodegradable. Castor oil, a triglyceride vegetable that has hydroxyl groups, was reacted with...
#1Xinwen Peng(SCUT: South China University of Technology)H-Index: 29
#2Linxin Zhong(SCUT: South China University of Technology)H-Index: 33
Last. Run-Cang Sun(BFU: Beijing Forestry University)H-Index: 103
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This paper is an attempt to investigate the influences of enzyme (laccase) and alkali treatments on the surface lignin of single cellulose fibre. The fibre surface characteristics and the interfacial behaviour of the sisal fibre/phenolic resin composites were also studied by SEM, AFM, XPS. The surface lignin greatly affected the surface physical and chemical properties of single cellulose fibres. The surface lignin concentration was up to 35% for the raw fibre without any treatment, and then it ...
This review presents the recent advances in the synthesis, properties and applications of thermosetting materials derived from renewable resources. Thermosetting materials are highly cross-linked polymers that are cured or set using heat, or heat and pressure, and/or light irradiation. This leads to high-performance products for industry due to their high modulus, strength, durability and resistance towards thermal stress and chemical attacks as provided by their high cross-linking density. With...
Abstract Lignocellulosic materials can significantly contribute to the development of biobased composites. In this work, glyoxal–phenolic resins for composites were prepared using glyoxal, which is a dialdehyde obtained from several natural resources. The resins were characterized by 1 H, 13 C, 2D, and 31 P NMR spectroscopies. Resorcinol (10%) was used as an accelerator for curing the glyoxal–phenol resins in order to obtain the thermosets. The impact-strength measurement showed that regardless ...
In this work, composites based on a phenolic matrix and untreated- and treated sisal fibers were prepared. The treated sisal fibers used were those reacted with NaOH 2% solution and esterified using benzophenonetetracarboxylic dianhydride (BTDA). These treated fibers were modified with the objective of improving the adhesion of the fiber-matrix interface, which in turn influences the properties of the composites. BTDA was chosen as the esterifying agent to take advantage of the possibility of in...
Abstract Thermoset phenolic composites reinforced with sisal fibers were prepared to optimize the cure step. In the present study, processing parameters such as pressure, temperature, and time interval were varied to control the vaporization of the water generated as a byproduct during the crosslinking reaction. These molecules can vaporize forming voids, which in turn affect the final material properties. The set of results on impact strength revealed that the application of higher pressure bef...
#2Aji P. Mathew(Luleå University of Technology)H-Index: 61
Last. Kuruvilla Joseph(IIST: Indian Institute of Space Science and Technology)H-Index: 51
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The aim of the study was to investigate the influence of fibre morphology of different natural fibres on the composites mechanical properties and on the fibre breakage due to extrusion process. The composite materials were manufactured using LTF (long fibre thermoplastic) extrusion and compression moulding and the used fibres were sisal, banana, jute and flax, and the matrix was a polypropylene. The results showed that sisal composites had the best impact properties and the longest fibres after ...
Last. B. Pazhanivel(Central Electro Chemical Research Institute)H-Index: 3
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Abstract In this work, the variation of mechanical properties such as tensile, flexural, and impact strengths of roselle and sisal fibers hybrid polyester composite at dry and wet conditions were studied. The composites of roselle/sisal polyester-based hybrid composites with different weight% of fibers were prepared. Roselle and sisal fibers at a ratio of 1:1 had been incorporated in unsaturated polyester resin at various fiber lengths. When the fiber content and length of the roselle and sisal ...
A series of tensile tests were conducted on a Lloyd LRX tensile testing machine for numerous natural fibers deemed potential candidates for development in composite applications. The tensile tests were conducted on the fibers jute, kenaf, flax, abaca, sisal, hemp, and coir for samples exposed to moisture conditions of (1) room temperature and humidity, (2) 65% moisture content, (3) 90% moisture content, and (4) soaked fiber. These seven fibers were then tested for the four conditions and the mec...
Advantages of composite materials based on natural fibre have warranted increased utility of these products and have significantly offset the use of artificial fibre composites. This work on preparation of fibre-reinforced polymer (FRP) composites has been carried out by utilizing naturally occurring fibres from sisal, jute, banana, and ramie plants. Two sets of FRP composites have been prepared (1) by chemical treatment and (2) without chemical treatment. Detailed characterization of FRP compos...
Last. F. Bongiorno(University of Palermo)H-Index: 1
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Abstract High performance biocomposites reinforced by sisal fibers, are between the most promising materials that could be used in various fields, from automotive to civil constructions, thanks to their good mechanical performance, as well as to the low cost and the great availability of the fiber. Nevertheless, at present their practical use is prevented by the limited knowledge of their mechanical performance. The results of the present study have shown that the intimate fibrillar structure of...
Abstract Over the last decade, with the development of technology, studies to reduce noise are increasing rapidly. It is known that flexible polyurethane foams, which are one of the most preferred materials in sound insulation, can be achieved even more superior properties with natural fiber reinforcement. With the use of natural waste in the studies carried out in this field, both ecological and economic benefits will be provided. In this study, it was decided to use rice plant waste as a reinf...
Abstract In the present work, the natural composites based on sugarcane bagasse fiber and Rice husk powder were processed using hand layup technique. The matrix selected was polyester. The composites prepared with 0%, 3%, 5%, 10%, volume fraction rice husk with 10% sugarcane bagasse. The mechanical properties such as tensile, flexural were investigated as per ASTM standard. Test results are investigated and shown the better ratio composites.
Phenolic, a thermoset polymer are among the most adaptive materials utilized by hundreds of industries. Phenol reacts with formaldehyde under either acidic or basic (alkali) conditions for formation structure of novolac and resol phenolic resin. Bio-phenolic or known as modified phenolic was introduced due to formaldehyde was assessed carcinogen with genotoxicity; harmful for respiratory system. This review article is intended to present an overview on the phenolic, types and chemical structure ...
