Material Characterization Of Roselle Fibre ( Hibiscus Sabdariffa L .)As Potential Reinforcement Material For Polymer Composites

Recently,in line with rising environmental concerns,n researchers are now replacing synthetic fibres with natural ones as the main component in composites.Natural fibres are preferred to synthetic fibres because of several advantages such as biodegradable,light weight, low cost and good mechanical properties.Roselle is one of the plants found to be suitable to be used to produce natural fibres.In this work,we analysed the physical, thermal and mechanical characteristics of roselle fibre. Roselle fibre has good physical properties which lead to the dimensional stability of the composite product.The result obtained indicated that the moisture content of roselle fibre is 10.9%,while water absorption is 286.5%. Thermal gravimetric analysis (TGA) was conducted to understand the thermal stability of roselle fibre at high temperature.The results show that the initial degradation of roselle fibre starts at 225 °C and completes the decomposition of the lignocellulosic component at 400 4C. A tensile test was conducted to investigate the mechanical properties of roselle fibre.The tensile strength of roselle fibre is 130 - 562 MPa.On the basis of the properties of roselle fibres obtained,we concluded that roselle fibre is one of the good natural fibres that can be used as reinforced material for the manufacturing of polymer composites for different applications,while at the same time saving the cost required to manage the agro waste

The effects of chemical treatment on the structural and thermal, physical, and mechanical and morphological properties of roselle fiber-reinforced vinyl ester composites

Roselle fiber is a type of natural fiber that can potentially be used as a reinforcement material in polymer composites for different applications. This study investigated the chemical, physical, thermal, mechanical, and morphological characteristics of roselle fiber-reinforced vinyl ester subjected to different fiber treatments. The roselle fiber was treated with alkalization and a silane coupling agent, and samples were prepared using the hand lay-up method. Treated roselle fiber significantly enhanced most of the properties of vinyl ester biocomposites compared with an untreated biocomposite. The results revealed that alkalization and silane treatment of the fiber changed its chemical properties. The treated fiber improved water repellence behavior of the roselle fiber-reinforced vinyl ester compared with the untreated fiber. Use of a silane coupling agent was determined as the best chemical treatment for the water absorption effect. Thermogravimetric analysis (TGA) demonstrated that alkalization-treated fiber had improved thermal stability; however, the opposite result was obtained with the silane-treated fiber. The morphological examination of treated and untreated roselle fiber-reinforced vinyl esters showed a good fiber adhesion between the treated fiber and the matrix, and less fiber pull-out from the matrix was observed. This observation provides good indication of the interfacial interlocking between the fiber and the matrix, which improved the tensile properties of the composites. In contrast, the impact results revealed that the treated fiber had a decreased impact energy compared with the untreated fiber. POLYM. COMPOS., 39:274–287, 2018. © 2016 Society of Plastics Engineers

Natural fibre filament for Fused Deposition Modelling (FDM): a review

Fused Deposition Modelling (FDM) gets the most attention in development and manufacturing industries. The demand for FDM in industries increases gradually over time and attracts many researchers to enhance the quality of the FDM’s fillers. The most popular filler reinforcements in use are synthetic or carbon fibre. However, these fibres are harmful to the environment. To overcome the issue and replace the current fibres and achieve the bio-composites filler, researchers suggested using natural fibre to replace the synthetic and carbon fibres as the reinforcement, which is also combined with bio-polymer matrix such as thermoplastics as the polymer matrix in FDM’s industries. Many experiments and tests are conducted to prove the capability of the natural fibre as the main material in composite industries. FDM is a world-wide technology that aims to be environmentally friendly, thus, this paper focuses on biodegradable fillers for FDM

Review of development and characterization of sugar palm fiber–reinforced polymer composites

This chapter reviews the characterization and development of SPF- reinforced polymer composites, as well as other important issues related to these composites. Sugar palm fiber has been the subject of research to study the potential of this fiber as an alternative option to reinforce polymer composites due to the fiber’s good mechanical strength and its stiffness, as well as its high durability and good resistance to sea water, all of which make this fiber a potential alternative to synthetic fiber in polymer composites. Works have been carried out to study the physical, mechanical, and thermal properties of of understand the nature of this fiber, the suitable manufacturing parameters to produce good composites from this fiber, and the opportunities that SPF fiber could offer. The works are not limited only to basic mechanical and thermal properties of SPF, but also study the tribological performance durability, biodegradability, and compatibility of the SPF and its composites

Review of development and characterization of sugar palm fiber reinforced polymer composites

Sugar palm fiber (SPF) has been gaining interest in the area of natural fiber composites owing to its good mechanical properties, high durability, good resistance to seawater and biodegradability. SPF is among the natural fibers that could be a potential material to be used as reinforcement in polymer composites. Incorporation of SPF as reinforcement in polymer composites has resulted in improvement in the physical, mechanical, and thermal properties of the composites. Another interesting point is the low density of SPF, which helps to reduce the weight of the composites, as well as increase the biodegradability. Much research has been carried out to determine the suitability of SPF as reinforcement in polymer composites. SPF-reinforced composites are suitable for a wide range of applications such as automotive anti-roll bars, rescue boats and drain covers. Chapter 2 provides an overview of the characteristics and development of various products derived from SPF-reinforced composites and the future direction of SPF and SPF-reinforced composites

Hybrid glass fibre reinforced composites with micro and poly-diallyldimethylammonium chloride (PDDA) functionalized nano silica inclusions

This work investigates the effect of using functionalised poly-diallyldimethylammonium chloride (PDDA) silica micro and nanoparticles on the apparent density, tensile and flexural strength and modulus of hybrid glass fibre reinforced composites. The work is carried out using a Design of Experiment (DoE) approach on a population of 60 composite specimens produced according the size of the nanoparticles and their weight fraction. A 2% of weight fraction of functionalised silica nanoparticles is shown to reduce the flexural strength and density of the composites, but to maximise significantly both the tensile, flexural modulus and tensile strength of the hybrid glass fibre materials.</p