Each of the moulding methods has its areas o, unidirectional (long) îbres, the method of extrusion cannot be used, ho, semi-soî material which could be metals or polymers through a die in order fo, the shape of the mould. The controlled pyrolysis treatment on the RH caused significant changes in the thermal, chemical, rheological and mechanical properties of the PP/RH composites, mainly on the mechanical properties Youngâs modulus, elongation at break and impact resistance that presented variation up to 100% when compared the composites containing NRH. Hard fiber sisal has high tensile strength, resistance to seawater immersion, friction resistance, flexibility and other characteristics, can be used for fishing, sailing, mining, transportation rope, canvas, waterproof cloth and other raw materials. SEM micrographs of PP composites revealed good distribution of flame retardants in PP matrix and good adhesion between sisal fiber and PP matrix. Natural fibre composites such as sisal polymer composites became more attractive due to their high specific strength, lightweight and biodegradability. The mechanism involved is rationalized using infrared/vibrational spectroscopy based measurements of untreated and treated sampled. Here we report the development of CG bast fibre yarns, which could yield replacements for artificial fibres in engineering applications. 2.1. Physical properties measured are workability, water absorption, and density while mechanical properties reported are compression strength, split tensile strength, and static modulus of elasticity. This study aims to explore the mechanical properties of hybrid glass fiber (GF)/sisal fiber (SF)/chitosan (CTS) composite material for orthopedic long bone plate applications. Composites with woven sisal fibres showed higher values for tensile strength and ultimate strain, and lower modulus of elasticity than composites with randomly arranged sisal fibres. Demand for natural fibers reinforced composites is growing as an alternative to synthetic fiber reinforced plastic composites. The treated sisal fiber composites show reduced water mass uptake than that of untreated sisal fiber composites. Some of the modification techniques make a change in the chemical groups on the structure of cellulose which result in chemical bonding with the hydrophobic matrix [6, [9]. In the present investigation, analysis of the interfacial properties of self-reinforced polyamide composites by using microbond multiple fibre pull-out test is emphasised. Besides, the matrix materials are often nonpolar and hydrophobic, and chemical bonding to the polar and hydrophilic natural fibers is difficult [1,4,5]. Scanning electron microscopy showed the role of organic peroxide in improving the interfacial interaction in fibre matrix adhesion, and hence resulting in improved mechanical properties. Kalaprasad et al. îe cellulosic îbres are îrst immer, anhydride because acetic anhydride is a poor swelling ag, in enhanced interfacial adhesion between the îbre and the ma, Aîer washing the îbre in distilled water o, tained between 4.5 and 5.5. îe îbre can further be washed with ethanol and then dried in, Glycidyl methacrylate (GMA) sisal îbre treatment, to minimize free pervasive reaction, due to unsaturation a, O-hydroxybenzene diazonium chloride (OBDC) îbre treatment, ment in the interfacial bonding adhesion between the îbr, îbre with 50îml benzoyl chloride for 15îmin and soaked in ethanol for 1î, benzoyl chloride to previously swollen 20 gram, chemical modiîcation with benzoylation was done f, was washed with ethanol and distilled water in or, chloride formed. In addition, failure modes of the composites were observed. Composites P, of polylactic acid and polypropylene based nat, properties between jute and E-glass îber-r, thermophysical properties of banana îber/polyp, physical properties of sisal îber/polypro, eîects of îller loading and bonding agent. The HT also influences the fiber strength to some extent and affects the mechanical properties of composites. In comparison to unmodified system, the incorporation of treated fibers could significantly enhance the mechanical properties of composites, especially adding the compatilizer of maleic anhydride-grafted polypropylene. Finally, lower percentage by weight of sisal powder content promotes better mechanical properties and lower water absorption percentages; that is, the increase of the sisal powder content exhibits behavior inversely and directly proportional to the mechanical properties and to the percentage of absorption of water, respectively. 33 Girisha et.al [8] investigated the tensile properties of composites made by reinforcing sisal, coconut spathe and ridge gourd as the new natural fibers into epoxy resin matrix. In this work, sisal fibers were subjected to an alkali/polyvinyl alcohol coating treatment by an ultrasonic impregnation method, and the sisal/high-density polyethylene composite was prepared by a twin-screw extruder. Sisal fiber is an important agricultural product used in the manufacture of ropes, rugs and also as a reinforcement of polymeric or cement-based composites. Green plastics are constantly being used to minimize the negative impacts of the polymers made of fossil fuels such as petroleum. The flexural strength of treated sisal fiber composite at same weight fraction was 17% higher than that of plain PLA. On the other hand, the use of natural fibres in composite materials, such as sisal fibres, in substitution for synthetic fibres, has increased considerably. The PP/RH composites prepared by extrusion with contents from 2 to 20 wt% of non-pyrolyzed (NRH) and pyrolyzed (PRH) rice husk were submitted to the injection molding for preparation of tensile and impact specimens and characterized by mechanical testing, thermal analysis, melt flow rate, infrared spectroscopy and scanning electron microscopy. 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