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Showing papers on "SISAL published in 2021"


Journal ArticleDOI
TL;DR: In this article, the utilization of natural sisal fibers in ultra-high performance concrete (UHPC) was investigated, and the results indicated that the flowability of the fresh UHPC mixture decreased with the increase of length and volume fraction of sisal fiber.

64 citations


Journal ArticleDOI
TL;DR: Among natural fiber composites, sisal fiber is one of the promising reinforcement which provides enhanced mechanical strength to the composites as discussed by the authors, and the sisal fibers are low cost, available at abundant...
Abstract: Among natural fiber composites, sisal fiber is one of the promising reinforcement which provides enhanced mechanical strength to the composites. The sisal fibers are low cost, available at abundant...

49 citations


Journal ArticleDOI
TL;DR: In this paper, a hydrophobic, flame-retardant composite film with synergetic benefit from soy protein isolate (SPI), sisal cellulose microcrystals (MSF-g-COOH), graphene nanosheets (GN), and citric acid (CA) was developed to reduce moisture uptake and fire risks induced by hygroscopic and flammable biobased films.
Abstract: At present, environmentally friendly biobased flexible films are of particular interest as next-generation fireproof packaging and sensor materials. To reduce the moisture uptake and fire risks induced by hygroscopic and flammable biobased films, we report a simple and green approach to develop a hydrophobic, flame-retardant composite film with synergetic benefit from soy protein isolate (SPI), sisal cellulose microcrystals (MSF-g-COOH), graphene nanosheets (GN), and citric acid (CA). Compared with SPI/MSF-g-COOH composite films, the as-prepared SPI/MSF-g-COOH/CA/GN composite films have significantly improved water resistance and can maintain excellent physical structure and good electrical conductivity in an ethanol flame. This work opens a pathway for the development of novel fire-retardant fire alarm biosensors.

41 citations


Journal ArticleDOI
TL;DR: In this article, weathered composite specimens were conditioned under ultraviolet (UV) light and water spray simultaneously for 2222h, which corresponds to approximately 1 year of the outdoor conditions.
Abstract: The biocomposites were produced by layering sequence of pure sisal fiber mat (SSSS), pure hemp fiber mat (HHHH), and their hybrid mats and then subjected to accelerated weathering conditions. The composite specimens were conditioned under ultraviolet (UV) light and water spray simultaneously for 2222 h, which corresponds to approximately 1 year of the outdoor conditions. Mechanical properties and thermogravimetric analysis (TGA) of the weathered composites were compared to the dry or unweathered composites. Chemical changes to the bio-based epoxy matrix and natural fiber induced by photodegradation were evident as a reduction in intensity and broadening of characteristic peaks from the Fourier Transform Infrared spectroscopy (FTIR) analysis. Tensile strength and flexural strength of the weathered HSSH and HSHS declined by 7%, 13%, 25%, and 26%, respectively. Degradation effects of weathering were also visible from the lower residue of the weathered composite specimens from the thermogravimetric analysis. Despite the slight drop in impact strength, all the weathered composite specimens had good impact resistance. Furthermore, the hybrid composites exposed to weathering had nearly equivalent impact strength compared to the pure sisal and hemp-based composites under the impact load. Based on this observation, sisal/hemp fiber bio-epoxy based hybrid composites are recommended for the outdoor structural applications requiring impact resistance.

38 citations


Journal ArticleDOI
TL;DR: In this paper, the performance of sisal and bamboo reinforced polyester hybrid composite (BSFRHC) with different fiber orientation was investigated for automotive interior part application, and the impact analysis of vehicle internal door panel made of BSFRHC was done using ANSYS Software.

37 citations



Journal ArticleDOI
TL;DR: In this paper, the effective elastic properties of sisal fiber-reinforced polystyrene composite were evaluated and compared to natural fiber composites as a potential structural material, and the results showed that sisal fibers have better elastic properties than natural fiber composite materials.
Abstract: In recent years, natural fiber composites have attracted attention as a potential structural material. This study evaluates the effective elastic properties of sisal fiber-reinforced polystyrene co...

29 citations


Journal ArticleDOI
TL;DR: In this paper, the authors investigated the effect of natural fiber-reinforced hybrid composites on the performance of hybrid composite composites and found that natural fiber composites find wide applications in recent decades owing to its biodegradability, low density, and low-cost benefits.
Abstract: Natural fiber-reinforced hybrid composites find wide applications in recent decades owing to its biodegradability, low density, and low-cost benefits. The work reported investigates, the ef...

28 citations


Journal ArticleDOI
TL;DR: In this paper, the tensile, flexural, impact, and hardness properties of sisal fiber and pineapple leaf (PALF) reinforced with polyester composites are described for the first time.

26 citations


Journal ArticleDOI
TL;DR: In this paper, the tensile, flexural, compression, impact and hardness properties of sisal fiber reinforced with polyester composites are expressed for the first time, and the experiment results revealed a consistent tendency of an increase in the above mechanical attributes to adding natural fibers/fillers.
Abstract: In this work tensile, flexural, compression, impact and hardness properties of alkaline treated sugarcane bagasse (SB), pine apple leaf (PALF) and sisal fiber (SF) reinforced with polyester composites are expressed for the first time This effort to develop hybrid composite materials with improved execution for worldwide applications is a progressing procedure Be that as it may, with their remarkable and wide scope of inconstancy, common fiber composites could rise as another elective designing material which can substitute the utilization of manufactured fiber composites The challenge in working with natural fiber composites (NFC) is the large variation in properties and characteristics In this experimental investigation SF as a base material, PALF and SB are filler materials The weight percentage of SF has been maintained as constant and the remaining two fiber fillers were varied The NFC are prepared by hand layup method and mechanical characteristics of tensile, flexural, compression, impact and hardness tests were performed as per ASTM standard The experiment results revealed a consistent tendency of an increase in the above mechanical attributes to adding natural fibers/fillers Better interlinking capability between the NFC and polyester matrix is also responsible for the effective resistance capability This type of composite materials can be useful for various engineering fields

22 citations



Journal ArticleDOI
TL;DR: In this article, sisal and banana fibers are used as reinforcement which is treated with NaOH solution to improve the bonding between fiber and resin by removing moisture, and different compositions of treated and untreated hybrid mixture composites were prepared.

Journal ArticleDOI
TL;DR: In this article, a hybrid composites using natural fibers and titanium oxide nano filler were fabricated using compression molding technique, which used Sisal fibers and Pineapple (P) and Sisal (S) fibers were used.
Abstract: In this experimentation hybrid composites using natural fibers and titanium oxide (TiO2) nano filler were fabricated using compression moulding technique. Pineapple (P) and Sisal (S) fibers were us...

Journal ArticleDOI
TL;DR: In this paper, a geopolymeric composite was produced, and was evaluated for its durability, flexural strength and microstructure, which indicated good durability to wetting and drying cycles.
Abstract: In Brazil, the sludge generated in water treatment plants (WTPs) has no economic value and since it is composed of silicon and aluminum oxides, it can be used in the production of geopolymers - alternative binders . Sisal fibers are renewable natural resources and relatively inexpensive. With such materials, a geopolymeric composite was produced, and was evaluated for its durability, flexural strength and microstructure. Durability was assessed through accelerated aging (10 wetting and drying cycles). While the reference composite (0 cycles) reached strength values of about 15 MPa in the flexural test, the aged composite reached the strength of 11 MPa, which indicated good durability to wetting and drying cycles. Samples that were naturally aged for 3 years were evaluated using stereomicroscopy. Considering that there was little degradation in the fibers of the composite, it follows that this material could be used in the manufacture of durable roofing sheets.

Journal ArticleDOI
TL;DR: In this article, the mechanical properties of sisal, coir and hemp fiber-reinforced concrete composites and several factors affecting the properties of natural fiber reinforced concrete are discussed.
Abstract: This review article focused on the mechanical properties of sisal, coir and hemp fiber-reinforced concrete composites and several factors affecting the mechanical properties of natural fiber-reinfo...

Journal ArticleDOI
TL;DR: In this paper, the results of the development of innovative sandwich panels made by combining wood bio-concretes and long sisal fibers reinforced composites were presented, and the effect of the cement-to-wood ratios on the density, thermal conductivity, compressive strength and elastic modulus of the WBC were also investigated.

Journal ArticleDOI
TL;DR: In this article, the authors used sisal fiber reinforced polyurethane (PU) loading into vinyl ester (VER) as interpenetrating polymer networks (IPNs) laminate.
Abstract: In this present study, untreated and (5 % NaOH) treated banana and sisal fiber was chosen as the reinforcement along with the various proportionate of polyurethane (PU) loading into vinyl ester (VER) as interpenetrating polymer networks (IPNs) laminate. In this study, banana/sisal (untreated/treated) fiber reinforced IPN laminate was fabricated with the following variant of 0 %, 20 %, 40 % PU loading by using the compressing molding process. Mechanical tests such as tensile, flexural, impact, hardness and water absorption tests were performed and compared in accordance with ASTM standards, to determine their inter-laminar strength of the IPN laminate. In addition, interfacial analysis was also carried out with the help of the scanning electron microscope (SEM) on the broken specimens in order to thoroughly understand the fractured specimen’s micro-structural behavior. Among all tests, the sisal fiber reinforced IPN laminate showed significant surge in all physical tests expects moisture absorption characteristics.

Journal ArticleDOI
TL;DR: The effect of fiber surface treatment on the structural, thermal and tribological properties of sisal fibers and their epoxy composites was investigated in this article, where Sisal fibers were mo...
Abstract: The effect of fiber surface treatment on the structural, thermal, and tribological properties of sisal fibers and their epoxy composites was investigated in this research work. Sisal fibers were mo...


Posted ContentDOI
TL;DR: In this paper, the authors explored the hybridizing effect of mechano-chemical activated fly-ash (FA) in polypropylene (PP) composites reinforced with sisal fibers by modifying it with 2, 4, and 6 wt.% of cetyltrimethylammonium bromide (C-tab).
Abstract: This study explores the hybridizing effect of mechano-chemical activated fly-ash (FA) in polypropylene (PP) composites reinforced with sisal fibers. Activation and resistance against agglomeration of FA has been achieved by modifying it with 2, 4, and 6 wt.% of the cetyltrimethylammonium bromide (C-tab). FA activation with C-tab and particle size reduction to nano-level (< 1 µm) have been appropriately achieved with a planetary ball milling and the same has been confirmed from the dynamic light scattering technique. The hybrid composite containing 25 wt.% of sisal fiber and 5 wt.% of (6 wt.% C-tab) treated FA shows much improved tensile (40.12 MPa), flexural (53.27 MPa), and impact strengths (0.75 kJ/m2) than that of virgin PP and its 30 wt.% sisal fiber composites. This increase in tensile and flexural strength was 30.54% and 48% higher than neat PP. Maximum notched impact strength of 0.80 kJ/m2 have been reported by hybrid composite containing FA treated with 2 wt.% of the C-tab. Micromechanical modelling using a combination of rule of mixture and inverse rule of mixture separately with Halpin–Tsai predicted a value close to the experimental Young’s modulus. DSC studies showed an increment in the composite's crystallinity upon fiber addition. Morphological analysis of the hybrid composite revealed good wettability of reinforcing fiber and FA within the matrix, whereas TGA showed an improved thermal stability of the composites.

Journal ArticleDOI
TL;DR: In this paper, the efficiency of natural sisal fiber reinforced polymer composites is evaluated on strength and ductility of reinforced concrete (RC) members and a new anchoring system has been proposed and tested to evaluate their performance in preventing the de-bonding of FRP from concrete surface.

Journal ArticleDOI
TL;DR: In this article, the mechanical properties and free vibration behavior of Jute, Sisal and hybrid Sisal/Jute epoxy composites were investigated using the Impulse Frequency response test under a free-free boundary condition.

Journal ArticleDOI
TL;DR: In this article, the authors have shown that the intimate fibrillar structure of the sisal fiber is associated with a high anisotropy involving not only the elastic parameters, but also the damage processes with typical fiber splitting phenomena, that influence noticeably the biocomposite strength under transversal tensile/compressive, longitudinal compressive and shear loading.
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 the sisal fiber is associated with a high anisotropy involving not only the elastic parameters, but also the damage processes with typical fiber splitting phenomena, that influence noticeably the biocomposite strength under transversal tensile/compressive, longitudinal compressive and shear loading. Also, they have permitted to implement new micromechanical models that can be used at the design stage, in all practical structural applications where low cost green biocomposites reinforced by sisal long fiber could be advantageously used.

Journal ArticleDOI
TL;DR: In this paper, a hierarchical cementitious composites were developed using microcrystalline cellulose (MCC), sisal fibers and cetyltrimethylammonium bromide (CTAB) as the dispersing agent.
Abstract: This paper reports new hierarchical cementitious composites developed using microcrystalline cellulose (MCC), sisal fibers and cetyltrimethylammonium bromide (CTAB) as the dispersing agent. MCC was dispersed in water without and with CTAB at different concentrations using ultrasonication and the optimum CTAB concentration for achieving homogeneous and stable MCC suspensions was found to be 40%. Hierarchical composites were fabricated using MCC (0.1–1.5 wt% of cement), sisal fibers (20 mm, 0.25% and 0.50 wt% of cement), 40% CTAB and tri-butyl phosphate as the defoaming agent. Mechanical strengths of composites improved significantly at 0.1 wt% MCC, which along with 0.5% sisal fibers improved compressive and flexural strengths by ~ 24% and ~ 18%, respectively. The hybrid reinforcement exhibited a synergistic effect on the fracture behavior of composites improving the fracture energy up to 40%. Hierarchical composites also showed improved fiber-matrix bonding, lower porosity and water absorption, superior hydration, carbonation resistance and durability up to 90 ageing cycles.

Journal ArticleDOI
TL;DR: In this article, a composite of sisal and banana plants was made into a composite by sandwich layering technique and the results revealed that the sisal/epoxy composite had the highest tensile, flexural, and impact strength of 24.5, 80.45, and 1.76, respectively, than all other composite combinations.

Journal ArticleDOI
11 Mar 2021-Polymers
TL;DR: In this paper, the mechanical and moisture properties of sisal fiber-reinforced epoxy resin hybrid composites were investigated and the main objective of these studies is to develop hybrid composite and exploit their importance over single fiber composites.
Abstract: In recent years, natural fiber reinforced polymer composites have gained much attention over synthetic fiber composites because of their many advantages such as low-cost, light in weight, non-toxic, non-abrasive, and bio-degradable properties. Many researchers have found interest in using epoxy resin for composite fabrication over other thermosetting and thermoplastic polymers due to its dimensional stability and mechanical properties. In this research work, the mechanical and moisture properties of Caryota and sisal fiber-reinforced epoxy resin hybrid composites were investigated. The main objective of these studies is to develop hybrid composites and exploit their importance over single fiber composites. The Caryota and sisal fiber reinforced epoxy resin composites were fabricated by using the hand lay-up technique. A total of five different samples (40C/0S, 25C/15S, 20C/20S, 15C/25S, 0C/40S) were developed based on the rule of hybridization. The samples were allowed for testing to evaluate their mechanical, moisture properties and the morphology was studied by using the scanning electron microscope analysis. It was observed that hybrid composites have shown improved mechanical properties over the single fiber (Individual fiber) composites. The moisture studies stated that all the composites were responded to the water absorption but single fiber composites absorbed more moisture than hybrid composites.

Journal ArticleDOI
TL;DR: In this paper, a fly-ash and sisal fiber reinforced hybrid polypropylene (PP) composites were developed and the FTIR results confirmed the esterification reaction among sisal fibers and maleic anhydride groups.
Abstract: This study focused on developing fly-ash and sisal fiber reinforced hybrid polypropylene (PP) composites. The hybridized composite containing 15 wt.% each of sisal fiber and fly-ash shows highest impact strength of 1.42 kJ/m2, demonstrating an improvement by ~ 125 % and ~ 25 % respectively in comparison to neat PP and composite reinforced with only sisal fiber. Highest and lowest tensile strengths of 37.09 MPa and 24.69 MPa were recorded by composite containing 30 wt.% each of sisal fiber and fly ash with PP and impact modified PP respectively. Flexural strength recorded a greatest value of 44.09 MPa for 30 wt.% reinforced sisal fiber with PP against a lowest estimate of 30.86 MPa for 30 wt.% reinforced fly ash with impact modified PP. The FTIR results confirmed the esterification reaction among sisal fibers and maleic anhydride groups. DMA showed an apparent positive shift in the glass transition temperatures of hybrid composites upon the addition of fly ash. Composite reinforced with 30 wt.% sisal fiber and fly ash exhibited a storage modulus of 13,155 MPa and 8,795 MPa at −80 oC, respectively. Thermal degradation stability of all the hybrid composites improved significantly. The lowest water uptake properties have been demonstrated from the composite with highest fly ash content (15 %).

Journal ArticleDOI
TL;DR: In this article, the tensile, flexural, impact strength and sound absorption behavior of sisal and palm fiber-reinforced hybrid composites were explored. But the authors did not consider the impact strength of the composite.
Abstract: The present work explores the tensile, flexural, impact strengths and sound absorption behavior of sisal and palm fiber-reinforced hybrid composites. The sisal and palm fibers were reinforced with ...

Journal ArticleDOI
05 Feb 2021-Fibers
TL;DR: In this paper, the physical and mechanical properties of sisal fiber and yarn of Moroccan origin were investigated by FTIR spectroscopy and thermogravimetric analysis, which revealed an interesting potential to use the Moroccan sisal yarns in development of bio-sourced composite materials.
Abstract: This work aims to investigate the physical and mechanical properties of sisal fiber and yarn of Moroccan origin The cellulosic and non-cellulosic constituents of the Moroccan sisal fiber were identified by FTIR spectroscopy The thermal properties were studied by thermogravimetric analysis The hydrophilicity of the fiber was evaluated by the contact angle The results show that the sisal fiber has a low thermal stability The mechanical properties of the fiber analyzed by the Impregnated Fiber Bundle Test (IFBT) method show that the porosity of the impregnated yarns and the twist angle of the yarns influence the elastic modulus of the sisal fiber The physical and mechanical properties of the manufactured sisal yarns were also characterized and analyzed The obtained results reveal an interesting potential to use the Moroccan sisal fiber in development of bio-sourced composite materials

Journal ArticleDOI
TL;DR: In this article, the tensile strength of varying glass/sisal and glass/jute contents within the composites were compared and the effect of hybridization was analyzed, and it was suggested that flax is an appropriate natural fiber to replace E-glass for applications requiring similar strength.
Abstract: The improvement in mechanical properties of biodegradable and sustainable materials like natural fibers turns out to be exceptionally appealing from the financial and biological perspectives. This is achieved by hybridization technique in which different fiber orientations can be adjusted in various arrangements providing variety in its properties. In this study, the authors used different natural fibers in hybridization with glass fibers. The tensile strength of varying glass/sisal and glass/jute contents within the composites were compared. Besides, the effect of hybridization was analyzed. Results revealed that all hybrid composites show low tensile strength as compared to the non-hybrid composites. However, in hybrid composites, the laminate containing a single layer of sisal fiber has shown almost the same tensile strength as non-hybrid composites. Based on results, it is suggested that flax is an appropriate natural fiber to replace E-glass for applications requiring similar strength.