Hybrid Composite System Research Articles

Investigations on morphology, tribology, rheology, thermo-mechanical properties, and EMI shielding of WC/MWCNT nanohybrids in polypropylene

This study is focused to explore the synergism of dual nanofillers (tungsten carbide (WC) and multiwalled carbon nanotubes (MWCNTs)) in melt extruded PP composites. The synergy of fillers in PP enhanced the elastic modulus, tensile strength, and critical stress intensity factor by 141.8%, 35.4%, and 62.6%, respectively, at an optimum filler content of 1 wt% of WC and 2 wt% of MWCNTs. In the hybrid composites, activation energy to initiate thermal decomposition raised by 78% and wear resistance increased by 93%, and the hybrid composites exhibited enhanced reflectivity in the X band region, which contributed to high electromagnetic shielding effectiveness. The improvement in the properties makes the current hybrid composite system an ideal candidate in application sectors where high modulus, energy absorption, and thermal stability are required.

Synergy in bio-inspired hybrid composites with hierarchically structured fibrous reinforcements

In response to the global energy crisis, high-performance transportation sectors are rapidly embracing lightweight materials to enhance energy efficiency and sustainability, while grappling with the persistent challenges of developing structural materials that meet stringent safety standards with robust mechanical performance and ease of scalability. Thus, this work presents a combined experimental and theoretical framework to develop a profound understanding of the synergistic effect in hybrid composites with bio-inspired fibrous reinforcements, by elucidating the interfacial interactions across multiple length-scales, encompassing atomic covalent bonding to micro-morphology. A model hybrid composite system, containing a self-assembled fibrous reinforcement consisting of nano-sized Graphene Nanoplatelets (GnP) covalently bonded onto chemically-modified micro-sized Glass Fibers (GF), was utilized to showcase the synergistic effect and highlight its associated mechanisms. The interfacial interactions of the reinforcement were optimized by obtaining the maximum density of covalent bonds, which was achieved with 0.5 wt% GnP for the hybrid composites containing 10 wt% GF, increasing the work of adhesion by 33 %, compared to the biphasic GF composites. The composite’s morphology contains minimal agglomeration with ∼68 % of GnPs oriented with the melt flow, supressing high-stress concentration areas, while the formed crystalline microstructure, with ∼18 % β-crystals, allows the matrix to absorb substantial energy. Furthermore, the increased trans-crystallization encapsulating the hierarchical reinforcement induced nanoscale stiffness variations, increasing rigidity, and forming an ∼16 µm gradient interphase that facilitates load transfer. The greatest synergistic effect observed was ∼54 %, ∼37 %, and ∼75 % for the tensile modulus, tensile strength, and impact strength, respectively. Additionally, a theoretical framework accounting for the synergistic effect was formulated, using a two-step core/shell homogenization model, which shows great potential in expediting the design and optimization of innovative hybrid composite materials.

Epoxy‐hemp and epoxy‐flax composites filled with glass dust for enhanced thermal insulation: An analytical and experimental study

AbstractThis article reports on an analytical and experimental investigation on the effects of fiber and filler reinforcement on the effective thermal conductivity (keff) of epoxy‐based composites. This research aims at enhancing the thermal insulation capability of fiber reinforced composites by adding an industrial waste, WGD (waste glass dust) as particulate filler. For this, an analytical model is proposed to estimate the keff values of particle filled polymer composites with and without fiber reinforcement. The results computed from the proposed correlations are then validated with some previously reported investigations. For an experimental validation, hemp and flax fiber reinforced epoxy based hybrid composites are fabricated with WGD as the fillers in varying weight fractions of 0 to 0.2. Effects of filler content on keff of fiber‐polymer systems are studied. Their keff are measured by a Unitherm Model 2022 instrument. It is found that the predicted and measured values are in good agreement. It is observed that the keff of the epoxy composites reduced from 0.359 to 0.297 W/m K with increase in the WGD weight fraction from 0 to 0.2. The keff of hybrid composites are also reduced by 27% and 15.53%, respectively, with 20 wt% addition of WGD.Highlights Hybridization of natural fiber based polymer composites. Utilization of waste glass dust as functional filler. Model development for heat conduction across hybrid composite system. Insulation capability enhancement of epoxy using fiber/filler reinforcements. Low cost thermal insulation materials using green materials and industry waste.

Effective magnetoelastic responses of hybrid fiber composites with viscoelastic matrices

This study examines the overall magnetoelastic responses of unidirectional fiber composites constructed by magnetostrictive fibers embedded in viscoelastic polymer matrices that had been reinforced by stiff fillers. In some polymer-based fiber composites, modifying polymer’s property by infiltrating particulate fillers is necessary. To design such hybrid composite systems with magnetoelastic coupling, it requires a detailed understanding of aggregate responses. In this study, we formulate a composite constitutive model based on a two-scale homogenization scheme for effective coupled viscoelastic and magnetoelastic responses for hybrid fiber composites. We first verify the validity of the model by comparing the predictions with experimental results available in literatures. We next investigate the performance of a hybrid composite in light of blocked stress and free strain which are two common factors of characterizing sensors and actuators. We finally elucidate how viscoelastic polymer matrices affect the overall magnetoelastic responses and ΔE-effect phenomenon in terms of some critical parameters such as phase concentrations, loading rates, prestresses and temperatures. The findings of this study serve as a preliminary guidance for the rational design of hybrid magnetostrictive composite materials. The proposed mathematics model can further integrate into a finite element framework for composite structure analysis.

Investigation of a 2D Metallic Selenide for Supercapacitative Applications

The study investigates the suitability of a 2D metallic selenide material for use in supercapacitors, which are rapidly gaining recognition as a viable energy storage solution. While supercapacitors are highly efficient at charging and discharging, their lower energy density is a limiting factor. This research focuses on identifying new materials that can enhance the energy density of supercapacitors while maintaining their rapid charging capabilities. The study examines CrSe2, a promising chalcogenide material that has recently been suggested for use in hybrid composite systems. The research shows that CrSe2 can be made in bulk quantities and exhibits high stability in certain electrolytes. The electrochemical properties of CrSe2 are measured for the first time and found to be consistent with an electric double-layer capacitance. Additionally, the material demonstrates a high specific capacitance, indicating potential for use in supercapacitive applications. The study concludes that the metallic-type conductivity of CrSe2 could be responsible for its superior performance over high surface area carbon black samples.

Flexural Behavior of Laminated Wood Beams Strengthened with Novel Hybrid Composite Systems: An Experimental Study

Flexural Behavior of Laminated Wood Beams Strengthened with Novel Hybrid Composite Systems: An Experimental Study

Mechanical and thermal characterization of coir/hemp/polyester hybrid composite for lightweight applications

Individual applications of coir and hemp as reinforcement in composites have been exhaustively studied; however, their hybridization must also be investigated. In this context, this research investigates the utilization of coir and hemp fibers as reinforcements in a polyester-based hybrid composite system. The primary objective is to find out how these reinforcements affect the hybrid composites' mechanical (tensile, flexural, and impact) and thermo-gravimetric properties. To accomplish this, composite samples with varying weight proportions of coir and hemp fibers were fabricated, and extensive mechanical testing was performed. The findings from the tensile, flexural, and impact tests revealed an enhancement in the mechanical characteristics of the fabricated composites as the proportion of coir fiber grew and the proportion of hemp fiber reduced. The hybrid composite, containing 15% coir and 5% hemp fibers, had superior mechanical properties to the binary composite system. In addition, thermogravimetric analysis was performed to determine the thermal stability of the hybrid composites. Within a temperature range of 30 °C–800 °C, weight loss was observed, confirming the overall thermal resistance of the materials. Fourier Transform InfraRed Spectroscopy (FTIR) was used to determine the composite's chemical composition, revealing the presence of functional groups that contribute to the composite's performance. Utilizing Scanning Electron Microscopy (SEM), the surface morphology of hybrid composites was investigated, yielding valuable insights into the fiber-matrix interaction and composite structure. The results of this study demonstrate the potential of the coir/hemp/polyester hybrid composite as a lightweight material in a variety of industries.

Strain sensitivity and microscopic deformation mechanism of graphene foam containing active nanoparticles under magnetic fields

Magnetic aerogels have attracted many practical applications in recent years, which requisites a comprehensive understanding on basic mechanics of this hybrid composite system. In this paper, the microscopic deformation mechanism and strain variation (εΔ) of such a hybrid material under external magnetic field (Ef) is systematically studied by the coarse-grained molecular dynamics simulation method. The major factors like layer thickness, magnitude of external magnetic field and crosslinks effects are mainly considered. The recovery behavior is also studied under cyclic Ef. Interestingly, the εΔ of such a hybrid material is much affected by the graphene sheet thickness, magnitude of applied Ef and crosslinks, due to their direct influences on the microstructural evolution. The εΔ of non-bonded hybrid composite with single layer thick graphene sheet (εΔ⁓0.19) is four times higher relative to eight layers thick system (εΔ⁓0.045). With the increase of graphene sheet thickness, the microstructural evolution of nanoparticles will change from wrapping of single layer sheets around them to flow and jump from one thick sheet to other. We also found the critical value of Ef, i.e., 200 nN for single layer thick graphene sheet hybrid systems beyond which the εΔ tend to decrease, however, εΔ for eight layers system continue to increase as a function of Ef magnitude. The addition of crosslinks remarkably enhances the εΔ (⁓0.74) and recovery (⁓90%) of hybrid composite system. The bonded nanoparticles initiate the folding and unfolding mechanism of graphene sheets during cyclic Ef. The results clarify the micro mechanism and basic mechanics of magnetic aerogels that will be helpful to the design the future devices and advanced sensors.

Tailoring of bimetallic organic framework-polymeric film composites: Real-time fouling-free electrocatalytic application of hydrogen sulfide releasing from organic donors and live cells

Electrochemical real-time hydrogen sulfide (H2S) sensor in biological and chemical environments are great interest due to their impact of interferences and electrode-fouling effects. Hence, fouling-free detection of H2S is a key challenging to explore an unmasked electrocatalytic activity. In this context, a simple and robust strategy was developed based on bimetallic Ni-Co-MOF with poly(3,4-ethylenedioxythiophene) (PEDOTs) and poly(o-phenylenediamine) (PoPDA). The hybrid composite system exhibits tunable-structural morphology, cohesive electrical conductivity, strong interfacial chemical bonding and good anti-fouling property. The PEDOTs@Ni-Co-MOF/GCE yielded an enhanced catalytic performance with a concentration range of 1 nM to 250 µM, low detection limit of 0.186 nM, and high sensitivity (7.29 μA μM−1 cm−2). The water soluble GYY4137, and phosphordithioates-based donors were achieved dynamically quantify the real-time release of H2S against pH and co-incubation time (0–30 min). Additionally, bimetallic-MOF with the polymeric film platform achieved highly selective in other sulfur-containing complex medium and biomolecules due to its strong electrostatic net-charges and size exclusivity. A practical application was demonstrated in whole blood and biofluids with acceptable recoveries from 97.40 to 98.79 % (n = 3). The real-time endogenous release of H2S was evaluated in live cells (E. coli MG1655) by using a cysteine stimulator.

Tailoring Multifunctional and Lightweight Hierarchical Hybrid Graphene Nanoplatelet and Glass Fiber Composites

In this work, hybrid polypropylene (PP)-based composites reinforced with graphene nanoplatelets (GnPs) and glass fiber (GF) were fabricated by injection molding to elucidate how the hybrid approach can produce synergistic effects capable of achieving properties and functionalities not possible in biphasic composites. Synergism between the reinforcements translated to improved mechanical performance, which was attributed to the chemically and/or electrostatically assembled hierarchical structure that facilitates load transfer at the interface while simultaneously tailoring the crystalline microstructure of the matrix by inducing transcrystallization and β-crystal formation. It was demonstrated that there exists an optimal concentration of 0.5 wt % GnP, producing the greatest mechanical properties and synergistic effect, corresponding to the highest degree of crystallinity (∼6% greater than Neat PP) and peak formation of β-crystals within the PP matrix. The greatest synergistic effect was found to be ∼52 and ∼39% for the specific tensile strength and flexural strength, respectively. The same optimal concentration of GnPs was found to produce the highest synergistic effect for thermal conductivity of ∼68% due to the volume exclusion effect induced by the GFs combined with the higher crystallinity of the microstructure, promoting the formation of thermally conductive pathways. Ultimately, the mechanisms contributing to the synergistic effect presented in this work can be used to maximize the performance of hybrid composite systems, giving them the potential to be tailored for a variety of high-performance industrial applications to meet the rising demands for ultra-strong, thermally conductive, and lightweight materials.

Glycidyl Methacrylate-Based Copolymers as Healing Agents of Waterborne Polyurethanes.

Self-healing materials and self-healing mechanisms are two topics that have attracted huge scientific interest in recent decades. Macromolecular chemistry can provide appropriately tailored functional polymers with desired healing properties. Herein, we report the incorporation of glycidyl methacrylate-based (GMA) copolymers in waterborne polyurethanes (WPUs) and the study of their potential healing ability. Two types of copolymers were synthesized, namely the hydrophobic P(BA-co-GMAy) copolymers of GMA with n-butyl acrylate (BA) and the amphiphilic copolymers P(PEGMA-co-GMAy) of GMA with a poly(ethylene glycol) methyl ether methacrylate (PEGMA) macromonomer. We demonstrate that the blending of these types of copolymers with two WPUs leads to homogenous composites. While the addition of P(BA-co-GMAy) in the WPUs leads to amorphous materials, the addition of P(PEGMA-co-GMAy) copolymers leads to hybrid composite systems varying from amorphous to semi-crystalline, depending on copolymer or blend composition. The healing efficiency of these copolymers was explored upon application of two external triggers (addition of water or heating). Promising healing results were exhibited by the final composites when water was used as a healing trigger.

Hybrid Composite Photocatalysts Membrane System For Industrial Water Treatment And Renewable Energy Applications

A combination between the composite photocatalyst and membrane system towards the development of hybrid process for various applications especially in water treatment and renewable energy synthesis. These hybrid processes overcome many of the difficulties that are associated with conventional methods and promote process intensification. The hybrid photocatalytic membrane process could reduce the downstream process and also degrade the toxic compound in the waste water. Effluent waste water generated from industrial and domestic process, it consists of complex organic compounds such as lignin, phenolic compounds, pectin, proteins and minerals etc. The effluent containing organic dyes and phenolic compounds releases toxic materials into aquo system poses environmental concern. The traditional effluent treatment very challenge process due to consist mixture of organic and inorganic pollutants such as lignin, resins, tannins, chlorinated phenol, waxes and heavy metals etc. Recently, many industries planning to reuse treated water for economic reasons and environmental protection.

Functionalized organic–inorganic hybrid composites used as colorimetric chemosensors for hydrogen sulfide detection

AbstractDetection of trace‐level hydrogen sulfide (H2S) gas is of great importance both in industrial production and disease diagnosis. In this article, two simple but smart colorimetric chemosensors for H2S detection were designed based upon the principle of colorimetric reaction. Ag NPs, as the main detection agent was loaded onto the primary carrier, silica sulfonic acid. Thus, a silver‐modified silica sulfonic acid (Ag‐SSA) was prepared successfully. Then the Ag‐SSA was integrated with two kinds of secondary substrate materials. One is the cotton‐woven textile and the other one is polyvinyl alcohol (PVA) nanofibrous membrane. Finally, two functionalized organic–inorganic hybrid composite systems for H2S detection were formed. Both of them were able to exhibit a rapid visual color change in response to H2S. Ag‐SSA/cotton textile was tested in the aqueous state and the limit of detection (LOD) of H2S solution was around 10−6 mol/L. For the Ag‐SSA/PVA nanofibers membrane detected in the atmospheric condition, the LOD of H2S gas reached 6.5 ppm. This research has been successfully demonstrated for the application in sensitive and selective detection of hydrogen sulfide in aqueous solution and gaseous state.

Performance of RC beams externally strengthened with hybrid CFRP and PET-FRP laminates

The use of fiber-reinforced polymers (FRP) composite materials in strengthening applications of reinforced concrete (RC) structures has been gaining wide popularity in recent decades. This is due to its superior properties such as high strength to weight ratio, durability, and versatility. In fact, it is well established that bonding FRP materials to the soffit of RC beams enhances the flexural capacity of such beams. However, the non-yielding characteristic of FRP materials is a major concern, and often results in sudden and brittle failure mode of the strengthened member. To encounter this issue, a new type of FRP materials composed from polyethylene terephthalate (PET) fibers have been developed. Compared to conventional FRPs, PET-FRP have large deformability and possess a nonlinear stress-strain relationship. Employing PET-FRP in the retrofitting industry reduces construction waste, enhances the capacity of structures and provides a solution that encourages the concept of sustainability. However, these types of large rupture strain (LRS) FRPs have lower stiffness and tensile strengths than conventional FRPs. Therefore, the main aim of this study is to combine the lower stiffness and large rupture strain of PET-FRP sheets with that of the higher stiffness and strength of carbon FRP (CFRP) sheets resulting in a new hybrid composite system. The research program consists of four RC beams externally strengthened with CFRP, PET-FRP, and their hybrid combinations, in addition to a control unstrengthened beam specimen. The beams are tested under four-point bending and load-displacement curves along with the failure modes, strength, strain in the FRP, and ductility of the beam specimens are examined. Test results indicate that strengthening with PET-FRP laminates significantly enhances the deformation capacity of the strengthened specimens compared to that with CFRP. In addition, the hybrid mix between CFRP and PET-FRPs resulted in 46-48% strength improvement compared to the unstrengthened control beam. However, the effectiveness of the hybrid system was not pronounced in terms of ductility due to the premature debonding of the concrete cover that occurred before utilizing the full strain of the hybrid system. Hence, it is advised for future research studies to anchor the hybrid sheets by means of end U-wraps or FRP spike anchors to delay the debonding failure and to exploit the benefits of the proposed hybrid system.

Multiscale modelling of graphene sheet and its application in laminated composites

Multiscale modeling strategy development of graphene and its composites is of critical importance in engineering and technological applications. In this work, we systematically developed a chirality preserved coarse-grained graphene model and the corresponding potential, TersoffCG(16–1). The robustness of this potential is verified through structural and mechanical characterization analysis comparison between coarse-grained and all-atomistic models. The Lennard-Jones potential is emphasized to adjust the interlayer properties of the interlayer distance and binding energy. Furthermore, in-plane properties of multilayer graphene assembly tensile and monolayer graphene crack, and out-of-plane properties of nanoindentation are fully analyzed. The copper/graphene nanocomposite tensile test indicated that the coarse-grained graphene model is compatible with the copper matrix. Our efficient and portable coarse-grained graphene model successfully reproduced the architectural parameters, elastic, fracture, and interlayer adhesion properties of graphene sheets compare with the reported experiment and theoretical results, which can serve as an effective strategy to research more hybrid composite systems.

Flexural behavior of HDPE tubular beams filled with self-compacting geopolymer concrete

This paper proposes a new hybrid composite tubular beam system that consists of an exterior high-density polyethylene (HDPE) tube with interior steel tube and self-compacting geopolymer concrete (SCGC). The flexural behavior of composite tubular beams with SCGC encased in HDPE tubes was investigated experimentally and theoretically. A total of twenty-two specimens was tested, including twelve confined and ten unconfined specimens. The test variables include the presence of confinement (confined or unconfined), HDPE tube thickness and interior diameter, presence of inner steel tube, cross section of inner layer (circular or square), and presence of SCGC filling in inner layer. The failure mode, flexural strength and fracture energy are examined based on measured load–deflection data by four point bending test. Results indicated that the HDPE confinement provided significant enhancement in flexural response and especially the ductility of specimens, demonstrating considerably large plastic deformations before failure. A theoretical methodology was developed to predict the ultimate flexural load capacity. The analysis was conducted based on the combination of classical beam theory and the modification of a previously proposed methodology. Results of the analysis confirmed the high accuracy of proposed methodology in predicting ultimate flexural capacity of HDPE tube-confined beams.

Enzyme-free detection of hydrogen peroxide with a hybrid transducing system based on sodium carboxymethyl cellulose, poly(3,4-ethylenedioxythiophene) and prussian blue nanoparticles

Herein, we report a two-layered hybrid catalytic interface composed of carboxymethyl cellulose (CMC), poly (3,4-ethylene dioxythiophene) (PEDOT), Prussian blue (PB) nanoparticles and Nickel-Hexacyanoferrate (Ni-HCF) layer for the enzyme-free detection of hydrogen peroxide (H2O2). Whereas the first layer, CMC:PEDOT:PB, is responsible for generating amperometric signals toward H2O2, Ni-HCF on CMC:PEDOT:PB layer is playing an active role as an operational stability-enhancer. In the study, where the systematic optimization of the sensor electrode is presented using cyclic voltammetry (CV), amperometry and electrochemical impedance spectroscopy (EIS) technique, the physical and chemical properties of the hybrid composite systems constructed is also supported by scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FTIR) techniques. The amperometric signal generation of the H2O2 sensor was linear between 1 and 100 μM (R2 = 0.999) with a sensitivity of 416.11 μA mM−1cm−2, providing a limit of detection (LOD) of 0.33 μM. The sensing system, which was not affected by the various interfering molecules, creates a successful sensor platform for H2O2 measurements in tap water with a high recovery value between 94.0% and 110.5% and relatively small RSD in the range of 0.4–5.2%.

Effect of MWCNT Surface Functionalisation and Distribution on Compressive Properties of Kenaf and Hybrid Kenaf/Glass Fibres Reinforced Polymer Composites.

The aim of this study is to evaluate the effect of surface treated multi wall carbon nanotubes (MWCNTs) on compressive properties of the unidirectional (UD) kenaf and hybrid woven glass/UD kenaf fibre reinforced polymer composites. The MWCNTs were first treated using concentrated acid (a mix of H2SO4 and HNO3) and silane (three-aminoprophyltriethoxysilane) in order to improve the dispersion within the epoxy matrix using a high shear roll milling technique. In this study, nanomodified epoxies were prepared using 0.5, 0.75 and 1.0 wt % of pristine MWCNT (PCNT), acid treated MWCNT (ACNT) and silane treated MWCNT (SCNT). These nanomodified epoxies were then used for the fabrication of kenaf and hybrid composites using combination of filament winding and resin impregnation. The uniaxial compression test was conducted using a universal testing machine according to the ASTM D3410 standard. The morphology of fractured samples was observed and analysed using scanning electron microscopy (SEM) in order to evaluate the failure behaviour and mechanisms involved during compression. It was found that the addition of treated MWCNT (ACNT and SCNT) improved the compressive properties of kenaf and hybrid composites as compared to those of untreated-MWCNT (PCNT). The addition of 1.0 wt % of SCNT exhibited good compressive properties in both kenaf and hybrid composite systems. The compressive modulus and strength increased by 73.25% and 20.15%, respectively, for composites made of 1.0 wt % SCNT and Kenaf (1.0SCNT/K). For the hybrid composites, the compressive modulus and strength increased by 21.18% and 7.73% for composites made of 1.0 wt % SCNT filled G/K composites (1.0SCNT/G/K).

Intrinsic cellulosic fiber architecture and their effect on the mechanical properties of hybrid composites

This study is mainly focused on the intrinsic fiber parameters and their influence on the mechanical properties of the hybrid composites. Cellulosic fibers are extracted from mesocarp of Cocos nucifera fruit and outer mat of Luffa cylindrica fruit. The inherent fiber parameters such as fiber diameter, lumen diameter, cell wall thickness are observed under light microscope. Micro-fibrillar angle is found using X-ray diffraction technique. Three varieties of hybrid polymer composite samples are fabricated using Cocos nucifera and Luffa cylindrica fibers as reinforcements in the ratio 2:1, 1:1 and 1:2 respectively employing hand layup technique with their combined weight maintained as 30%. Significant response in the Load Vs Deflection curve and mechanical properties of the hybrid composites are found attributing to the difference in the respective weight proportion of the constituent fibers in the hybrid composite system. Results exemplify that the hybrid composite sample comprising Cocos nucifera and Luffa cylindrica fibers in the ratio 1:2 capitulates the maximum flexural strength and impact strength of 31.05 MPa and 14.24 kJ/m2 respectively when compared with other hybrid composites. The reason for the difference in mechanical strength of hybrid composite samples containing two different fibers is found to be related to the built-in architecture and physical characteristics of the constituent fibers. The morphology of the fractured samples are examined and reported. It is concluded that properties of hybrid composites can be tailor made depending upon the requirements either by using the Cocos nucifera fibers to impart ductility or Luffa cylindrica fibers to impart brittleness.

The effect of twin screw compounding parameters on the tensile properties of pineapple leaf/sea shell hybrid polymer composite using DOE approach

Pineapple leaf and sea shell were used as natural fillers in this research due to its biodegradable nature, wide availability, continuous resources and low cost. This research work was carried out to investigate the effect of compounding process using twin screw extruder on the tensile performance of pineapple leaf / sea shell polymer composite using Design of Experiment (DOE) approach. A total of nine runs of were formulated and the resulitng hybrid composites were compounded using twin screw extruder. The short term tensile test was carried out to determine the tensile properties and the data were sunsequently analyse using DOE software. Pareto chart of the standardized effect and the main effect plot were employed to investigate the relationship between processing parameters and the tensile performance of the hybrid composite systems. Based on the initial DOE analysis, it is shown that compounding parameters had influenced the final mechanical behavior of the hybrid composites.