Sanjeev K Nayak

National Institute of Technology Karnataka | NITK Surathkal · Department of Electrical and Electronics

We study the $\vec{k}\cdot \vec{\pi }$ electronic structure of strained ZnO in the wurtzite structure (w-ZnO), in a four band model, where $\vec{k}$ is the electronic wave vector and $\vec{\pi }$ is the relativistic momentum operator. The four bands are: one conduction band ${{\rm{\Gamma }}}_{7c}$ and three valence bands ${{\rm{\Gamma }}}_{7v}\,\to...

We discuss the magnetic moment and the magnetic order induced by localized defects, like vacancies, interstitials and/or non‐magnetic ions, in a non‐magnetic oxide atomic lattice. When the defect concentration is of the order or larger than ∽3at.% magnetic order at room temperature can appear. In this work we develop the theoretical basic principle...

The incorporation of Fe impurities in hexagonal barium titanate is studied in the framework of density functional theory. Formation energies are calculated to find the most probable defect structure. The substitution of Fe at the two inequivalent Ti sites accompanied by oxygen vacancies in different positions is studied. Additionally, different cha...

Silver-impregnated polyacrylonitrile (PAN) nanofibre was prepared through electrospinning process. Infra-red spectroscopy (FT-IR), X-ray powder diffraction (XRD), scanning electron microscopy (SEM), Thermo gravimetric analyses (TGA/DTA) were used to characterize PAN and PAN/Ag composites. The XRD results reflects decrease in the crystallinity of PA...

Cellulose microfibrils (CMF) were extracted from sisal fiber and characterized. Biocomposites of PLA reinforced with CMF were fabricated employing melt blending technique followed by injection moulding. The biocomposites were subjected to various characterisation studies to investigate the effect of CMF within the PLA matrix. Differential scanning...

Izod impact and Single Edge-Notched Bending (SENB) fracture toughness measurement was used for evaluating the effect of nano-reinforcements (Cloisite 30B) on rubber toughened Polycarbonate (PC) matrices. The effect of blending thermoplastic polyurethane (TPU) and various notch lengths on the fracture characteristics of PC nanocomposites has been es...

The electronic structure of Pb1-xSnxTe is studied by using the relativistic Korringa-Kohn-Rostoker Green function method in the framework of density functional theory. For all concentrations x, Pb1-xSnxTe is a direct semiconductor with a narrow band gap. In contrast to pure lead telluride, tin telluride shows an inverted band characteristic close t...

Plastic components from waste mobile phones were sorted and characterized using visual, spectroscopic and thermal methods. The mechanical properties of the recovered plastics were investigated by comparing with commercially used reference materials. The results revealed the practical feasibility of these recovered plastics to make new products thro...

The electronic structure of Pb$_{1-x}$Sn$_{x}$Te is studied by using the relativistic Korringa-Kohn-Rostoker Green function method in the framework of density functional theory. For all concentrations $x$, Pb$_{1-x}$Sn$_{x}$Te is a direct semiconductor with a narrow band gap. In contrast to pure lead telluride, tin telluride shows an inverted band...

The blend of bio-based poly(trimethylene terephthalate)/poly(butylene adipate-co-terephthalate) blend (60/40 by weight ratio) was prepared via melt blending technique using twin screw extrusion. Its non-isothermal crystallization kinetics was investigated by differential scanning calorimetry at different cooling rate. Avrami and Ozawa model was uti...

In this study, the bio-based epoxy nanocomposites were prepared from acrylated epoxidized castor oil toughened diglycidyl ether of bisphenol A epoxy network filled with sisal fibers and cloisite 30B clay. The chemical structure of acrylated epoxidized castor oil resin was confirmed by Fourier transform infrared and Proton nuclear magnetic resonance...

Present investigation on polymer electrospinning has emerged as a powerful technique for fabrication of nanofiber from biomaterial lignin for a wide range of applications. The electrospinning of biomaterials for fibre formation is of particular interest not only because the resources are renewable, but also because of the desirable characteristics...

Introduction Organically Modified Layered Silicates Reinforced Biodegradable Nanocomposites: New Era of Polymer Composites Environmentally-Friendly Polymer Blends from Renewable Resources Applications and Prototype Development Future Perspectives Conclusion

In the present study, the mechanical and thermal properties of sisal fiber-reinforced unsaturated polyester (UP)-toughened epoxy composites were investigated. The sisal fibers were chemically treated with alkali (NaOH) and silane solutions in order to improve the interfacial interaction between fibers and matrix. The chemical composition of resins...

Bio-poly(trimethylene terephthalate) (bio-PTT) hybrid nanocomposites constituting 1.5 wt% of lignin nanoparticles (LNP) and variable wt% of vapor-grown carbon fibers (VGCF) were prepared using melt extrusion followed by a microinjection molding technique. Mechanical results revealed an improvement in tensile flexural and impact properties of bio-PT...

Extreme complexity in the range of polymer composition in waste printed circuit boards (WPCBs) will leave us to follow a series of steps to formulate an efficient recycling system. The current study deals with the recovery and utilisation of non-metallic fractions from WPCBs through dismantling, size reduction and sieve analysis. Density based tech...

Poly ethylene oxide (PEO) and Polyvinylidene fluoride-co-hexaflouropropylene (PVdF–HFP) blend electrolytes filled with surface modified TiO2 nanofillers were prepared by solvent casting method. The ionic conductivity is increased about 7.02 × 10−4 S/cm with the incorporation of surface modified TiO2 nanoparticles upto 7 wt %, where the ionic conduc...

The hybrid polymer nanocomposites based on poly(vinylidene fluoride-co-hexaflouro propylene) (PVdF-HFP) as a host matrix, propylene carbonate as the plasticizer, and surface modified and unmodified TiO2 nanoparticles as fillers for dye-sensitized solar cell applications have been prepared using a solvent casting technique. The surface of TiO2 was m...

ABS/fly ash composites are prepared using melt compounding technique and the standard samples are subjected to various characterisation studies. Mechanical, dynamic mechanical, thermal, morphological and rheological properties of the composites have been conducted and the results are corroborated. The thermal properties of the ABS composites have i...

Chromium-doped hexagonal barium titanate is studied with first-principles density functional theory. The results are compared with experimental data available from electron paramagnetic resonance, x-ray diffraction, and optical absorption spectra. The probable site for the impurity atom occupancy in the lattice, their probable charge states, and th...

The bioequivalence of two different tablet formulations containing losartan potassium 100 mg was determined in healthy volunteers after a single oral dose in a randomized crossover study. Test and reference products were administered to 60 volunteers with 240 ml water after overnight fasting. Plasma concentrations of losartan and its active carboxy...

Fuel cell and microturbine based distributed generation (DG) system are one of the promising source due to their operating efficiency, reliability and power quality. Thus, the selection of their operation is essential to obtain the maximum efficiency of two individual sources. In this paper, the genetic algorithm (GA) and particle swarm optimizatio...

The distributed generation (DG) with fuel cell and microturbine generation (MTG) system is an emerging approach to provide a quality power in the distribution network though the renewable and nonrenewable energy resources. Thus, interconnection of fuel cell MTG based DG system to the distribution network has to withstand several grid issues. This p...

Polymer electrolyte membranes have prepared for dye sensitized solar cells based on Polyvinylidene fluoride-co-hexaflouropropylene (PVDF-HFP) filled with silane modified Sodium montmorillonite (Na-MMT) nanofillers. Na-MMT nanoclay has modified using Aminopropyltrimethoxysilane and it is confirmed by FTIR and XRD. The XRD patterns of PVDF-HFP/Si-NaM...

Lignin nanoparticles (LNPs) have been synthesized employing the acid precipitation technology. The particle size of LNP was determined using dynamic light scattering (DLS) and transmission electron microscopy (TEM) technique. The particular advantage of this approach is the absence of particle aggregation, and formation of individual and randomly d...

Polyvinylidene fluoride-co-hexaflouropropylene (PVdF-HFP)/TiO2 hybrid nanocomposites membranes for electrical applications have been prepared using a solvent casting technique. The interface between PVdF-HFP and TiO2 was modified using aminopropyltrimethoxysilane (APS) coupling agent. The silane linkages on the TiO2 surface have been confirmed usin...

This article is designed to review the developments in synthesis, modifications, and properties of epoxy monomers derived from both petroleum and renewable resources. It begins with the enhancement in epoxy monomer properties such as mechanical, thermal, adhesive, barrier and etc by addition of flexible polymer and elastomers. It also explains the...

Poly (lactic acid) (PLA) and poly (butylene adipate-co-terephthalate) (PBAT) blend nanocomposites were prepared using melt blending technique followed by compression moulding. The blend nanocomposites were prepared with a variation of PBAT loading along with maleic anhydride and benzoyl peroxide ranging from 5 to 20 wt% along with two different com...

In this study, organically modified Na-MMT clay was used for the preparation of blend nanocomposites containing different ratios of polypropylene (PP) and ethylene propylene diene monomer (EPDM) elastomer in a twin screw extruder. Maleic-grafted PP (MAPP) was used as compatibilizer for making PP hydrophilic. Surface modification of Na-MMT was made...

magnified image We have studied the defect properties of substitutionally doped chromium in hexagonal barium titanate using the density functional theory together with the generalized gradient approximation restricted to exclusively electronic compensation of the charged defect. The supercell used in our studies is large enough to mimic a chromium...

This study presents a novel approach towards clay modification via thermal dehydroxylation, for polymer nanocomposite application. The feasibility of modification of clay via thermal dehydroxylation and its influence on the polymer properties was investigated, with reference to the polyproplylene (PP) nanocomposites. In spite of ample available lit...

We investigated the variation of the electronic band gap of ZnO bulk and that of bent ZnO nanowires under the influence of uniaxial strain by using density functional theory. By applying a strain of about ±2% to bulk ZnO in equilibrium, we mimic the recent experimentally determined tensile and compressive strain along the c axis of ZnO microwires w...

The present investigation focuses on the effect of fiber surface treatment on the mechanical, thermal and morphological properties of sisal fiber (SF) reinforced recycled polypropylene (RPP) composites. The surface of sisal fiber was modified using different chemicals such as silane, glycidyl methacrylate (GMA) and O-hydroxybenzene diazonium chlori...

This work probes the relevance of oxygen vacancies in the formation of local ferromagnetic coupling between Fe ions at octahedral sites in zinc ferrites. This coupling gives rise to a ferrimagnetic ordering with the Curie temperatures above room temperature in an otherwise antiferromagnetic compound. This conclusion is based on experimental results...

Electronic conduction through quantum dots undergoing Jahn–Teller distortion is studied utilizing a model presented recently in connection with investigation of possible magnetovoltaic effect in this system. The quantum dot connected to two metallic leads is described by the single impurity Anderson model (SIAM) Hamiltonian along with two additiona...

In this study, the effect of poly(ethylene glycol) (PEG) on the preparation of Poly(lactic acid) (PLA)/PEG blend and its nanocomposites by melt intercalation method were investigated. The PEG having molecular weight of 6,000 g/mol used with various concentrations (0, 10, 15, 20, 25, 30 wt%) in the preparation of PLA/PEG blend. Again, two types of c...

The Microturbine Generations (MTG) system is becoming one of the promising sources of Distributed Generation (DG) due to their fuel flexibility, reliability and power quality. Thus, the accurate model of MTG system is required for the grid connected operation and its perturbations. This article presents the performance study of MTG based DG system...

Partially miscible blends of poly(lactic acid) (PLA) and poly(hydroxybutyrate) (PHB) have been prepared by the melt mixing method. An interpenetrating network structure created by a maleic anhydride (MA) compatibilizer imparted additional interactions between the two matrices, which has resulted in increased miscibility within the blends. A modifie...

Fracture behaviors of fibrillar silicate clay (MMT) filled thermoplastic polyolefin (TPO) containing polypropylene (PP) blended with ethylene-propylene-diene monomer (EPDM) were systematically investigated using impact test method and J -integral by locus method. Drastic increase in impact strength is observed for all developed compositions and g...

Agricultural mulch film of poly(lactic acid) (PLA) has been prepared under industrial conditions by the extrusion blown film method with modified properties using poly(hydroxibutyrate) (PHB) and reactive compatibilizer maleic anhydride (MA). Processing parameters and blend composition have been optimized based upon processability and mechanical pro...

Nucleation capacity of organically modified natural montmorillonite within the surface-treated banana fiber (BF)-reinforced PLA biocomposites has been studied using DSC analysis in the present investigation. Both the surface treatments and nanoclays play vital roles in the variation in nucleation process of PLA during cold crystallization process....

Interfacial agents such as compatibilizers have recently been introduced into polymer blends to improve microstructure and mechanical properties of thermoplastics materials. This method is proven to be an effective way to prepare a mixture of polymeric materials from E-waste that can have superior mechanical properties over a wide temperature range...

Fuel cell is most promising power source for hybrid operation with conventional and non-conventional energy source. This is due to its operating temperature, power matching and remote application. The fuel cell based distributed generator (DG) source can be operated in combined with wind turbine, photovoitaic's generation system, gas turbine and ma...

The distributed generation (DG) with microturbine generation (MTG) system is an emerging approach for providing a quality power in the distribution network. Thus, interconnection of MTG system into the distribution network has to withstand several grid issues, such as, balanced voltage dip, unbalanced voltage, voltage swell and many more. This pape...

The feasibility of sulfonated poly(ether ether ketone) (SPEEK) membranes reinforced with unmodified silica (SiO2) and modified silica (SiO2-SO3H) nanoparticles as proton exchange membranes (PEMs) was investigated here. The sulfonated membranes were characterized for degree of sulfonation, thermal stability, as well as water/methanol uptake properti...

The present study discusses structural aspects of nanocomposites and the ability of layered nanosilicates to alter the flow behaviour of poly(lactic acid) (PLA) melts. In addition, dynamic and static mechanical properties of PLA nanocomposites prepared from melt mixing method have been also discussed. A comparative study of nanocomposite properties...

Polylactic acid (PEA) is a completely biodegradable potential replacement for petroleum based plastics used for various commodity applications. However, difficulties in processability and cost restrict the polymer to clinch its niche in the market. Present investigation tried to modify the processability and cost of the PEA without compromising its...

Current study evaluates the effect of fiber surface treatments on the mechanical properties of banana fiber (BF) reinforced polylactic acid (PLA) biocomposites. Experimental results indicate increase in tensile modulus and strength upon surface treatments of BF with various silanes (APS and Si69) and NaOH. Approximately, an increase of 136% in tens...

A novel thermal plasma in-flight technique has been adopted to synthesize nanocrystalline ZnO and carbon doped nanocrystalline ZnO matrix. Transmission electron microscopy (TEM) studies on these samples show the average particle sizes to be around 32 nm for ZnO and for carbon doped ZnO. An enhancement of saturation magnetization in nanosized carbon...

A study of the nucleation effect of TiO2 in poly(trimethylene terephthalate)/TiO2 nanocomposite has been carried out using different theoretical models. The models were applied and developed with the aim to describe and better understand the influence of the TiO2 dispersion on crystallization characteristics of PTT. The PTT/TiO2 nanocomposites with...

The hybrid fuel cell and microturbine based distributed generation(DG) systems are predicted to play an important role in power distribution network in the near future. There are several models of hybrid DG sources such as, wind turbine generation with photovoltaic, tidal with geothermal, fuel cell with gas turbine, stealing engine with fly wheel a...

The continued interest in the distributed generation in recent years is leading to a number of generators connected to distribution network. The introduction of DG in the distribution system changes the operating features and has significant technical impact. One of the main obstacle for high DG penetration in the distribution feeder is the voltage...

The microturbine based Distributed Generation (DG) system are becoming the popular source of power industries due to their fuel flexibility, reliability and power quality. The microturbine generation (MTG) system is a complicated thermodynamic electromechanical system with a high speed of rotation, frequency conversion and its control strategy. In...

The mechanical properties of polylactic acid (PLA)/nanoclay were examined using the composite theories. Among Guth equation, Halpin-Tsai Equation and Modified Halpin-Tsai equation, the Halpin-Tsai equation is universally used for composites reinforced by fiber-like or rod-like fillers. A brief comparison made for the Young’s modulus of the platelet...

The microturbine based distributed generation (DG) system are predicted to play an important role in the distribution network in the near future. The microturbine generation (MTG) system has great impact on the DG system on real time system management and planning. It is popularly accepted that, MTG system are attracting the more attentions towards...

The fuel cell based distributed generation (DG) system are gaining more attention due to stationary operation, reliable power and less maintenance. Among the different types of fuel cell, one of the high temperatures operating promising Solid Oxide Fuel Cell (SOFC) is preferred due to reliable operation and co-generation purpose. This paper present...

We study the magnetic interactions of Co doped in ZnO, with the Co atoms occupying the nearest neighbor cation sites. We perform electronic structure calculations using the local density approximation (LDA), generalized gradient approximation (GGA), and GGA+U. The Hubbard U is treated separately on d-orbitals of Zn and Co, and simultaneously on the...

Eco-friendly completely biodegradable biocomposites have been fabricated using polylactic acid (PLA) and banana fiber (BF) employing melt blending technique followed by compression moulding. BF’s were surface treated by NaOH and various silanes viz. 3-aminopropyltriethoxysilane and bis-(3-triethoxy silyl propyl) tetrasulfane (Si69) to improve the c...

A density functional theory study of substitutional carbon impurities in ZnO has been performed, using both the generalized gradient approximation (GGA) and a hybrid functional (HSE06) as exchange-correlation functional. It is found that the non-spinpolarized C$_\mathrm{Zn}$ impurity is under almost all conditions thermodynamically more stable than...

Ethylene octane copolymer–polypropylene (PP) blend was optimized at 30 wt% of ethylene octane copolymer with PP and the same ratio was kept constant for preparing ethylene octane copolymer–PP nanocomposites (70/30). The nanocomposites were prepared with commercially modified organoclays (C20A and C30B) and laboratory-modified organoclays (OMMT-I an...

The present article summarizes the development of poly(butylene adipate-co-terephthalate) (PBAT) and organically modified layered silicates nanocomposite using a co-rotating twin screw extruder having a blown film unit. Wide angle X-ray diffraction (WAXD) studies indicated an increase in d spacing of the nanoclays in the bio-nanocomposite hybrids r...

The effect of surface treated sisal fiber on the mechanical, thermal, flammability, and morphological properties of sisal fiber (SF) reinforced recycled polypropylene (RPP) composites was investigated. The surface of sisal fiber was modified with different chemical reagent such as silane, glycidyl methacrylate (GMA), and O-hydroxybenzene diazonium...

Distributed Generation (DG) play an active role in the distribution network due to its minimum loss, maximum efficiency and environmental impact. Moreover DG can supply base load power which improves the system stability, reliability and power quality. Among the different combined DG systems like solar with wind, tidal with geothermal and others, f...

Poly lactic acid (PLA)/Banana fiber (BF) biocomposites were fabricated employing melt blending technique followed by compression molding. BF were surface-treated by NaOH and various silanes viz. 3-aminopropyltriethoxysilane (APS) and bis-(3-triethoxy silyl propyl) tetrasulfane (Si69) to improve the compatibility of the fibers within the matrix poly...

Distri buted Generation (DG) is predicted to play an important role in the electric power system in the near future. It is widely accepted that microturbine-gen eration systems are currently attracting lot of attention to meet users' need in the distributed generation market In order to gain the benefits of interconnected operation of microturbine...

Starch-based biodegradable banocomposites of poly(butylene adipate-co-terephthalate) [PBAT] and organically modified nanoclays were prepared using melt intercalation technique in Haake Torque Rheocord 9000. Two different organically modified nanoclays Cloisite C20A and Cloisite C30B at various wt% (1, 3, 5) have been used for fabrication of nanocom...

Poly(lactic acid) (PLA)/Polybutylene adipate co-terephthalate (PBAT) blend and its nanocomposites were prepared using melt blending technique. Glycidyl methacrylate (GMA) has been used as a reactive compatibilizer to improve the interface between PLA and PBAT. Mechanical studies indicated an increase in impact strength and tensile modulus of PLA ma...

Polypropylene/bamboo fibre-reinforced composites (BFRP) and polypropylene-bamboo/glass fibre based hybrid composites (BGRP) using an intermeshing counter-rotating twin-screw extruder followed by injection moulding in which maleic anhydride grafted polypropylene (MAPP) was used as a compatibilizer. The effect of hybridization on the mechanical perfo...

Polypropylene (PP)/clay nanocomposites prepared by melt blending technique using different percentages of clay with and without maleic anhydride grafted PP (MA-PP) were studied. The intercalated and exfoliated structure of nanocomposites was characterized by X-Ray Diffraction (XRD) and transmission electron microscopy (TEM). Because of the typical...

Transition metals doped ZnO are possible candidates for multiferroics. Here, we have investigated the evolution of ferromagnetism due to Co dopants. The magnetic properties have been studied for Co concentrations from 0 to 100% by using ab-initio methods, i.e., KKR Green's function techniques. In order to estimate the Curie temperature we have perf...

Ferromagnetic Heusler alloys like Ni-Mn-Z (Z = Al, Ga, In, Sn, Sb), which undergo a martensitic phase transformation, are on the edge of being used in technological applications involving actuator and magnetocaloric devices. The other class of ferromagnetic full Heusler alloys like Co-Mn-Z (Z = Al, Si, Ga, Ge, Sn) not undergoing a structural phase...

Polypropylene/surface modified clay nanocomposites were prepared by melt intercalation in twin-screw extruder followed by blown film extrusion. The effects of organically modified clay on the physical, mechanical, thermal and morphological properties of the prepared nanocomposites were studied. The results showed that 95% enhancement in tensile str...

The Ni-Mn-Ga shape memory alloy displays the largest shape change of all known magnetic Heusler alloys with a strain of the order of 10% in an external magnetic field of less than one Tesla. In addition, the alloys exhibit a sequence of intermediate martensites with the modulated structures usually appearing at c/a < 1 while the low-temperature non...

The present work summarizes an experimental study on the dynamic mechanical behaviour of sisal – glass fiber reinforced PP composites (SGRP). Variation in mechanical strength, storage modulus (E’), loss modulus (E’’) and damping parameters (tan δ) with the addition of fibers and MAPP were investigated. Mechanical tests revealed an increase in the t...

Polycarbonate (PC) nanocomposites were prepared by melt intercalation technique in an intermeshing co-rotating twin-screw extruder. Both unmodified (Na+MMT) and organo-modified (Cloisite 10A & OMMT) clays were used for the preparation of nanocomposites. The effect of addition of clays on the morphological and dynamic mechanical properties of PC mat...

The present paper summarizes an experimental study on the molten viscoelastic behavior of HDPE /jute composites under steady and dynamic mode. Variations of the melt viscosity and die swell of the composites with an increase in shear rate, fibre loading and coupling agent concentration have been investigated using capillary rheometer. It was observ...

The scanning electron micrographs (SEM) were taken at different magnifications with respect of the fractured surfaces of the polymer composites prepared from unsaturated polyester resin and jute sliver with 60% fiber loading by weight. The composite specimens were prepared using both untreated (control) and chemically modified (bleached) jute fiber...

PP/EOC thermoplastic blend nanocomposites were prepared by melt intercalation technique using an intermeshing co-rotating twin screw extruder. The organoclay (Na+ MMT, Cloisite 20A, Cloisite 30B) content was varied between 0-5wt. % whereas the blend composition was kept constant (70PP: 30EOC) as optimized in our previous work. The effects of clays...

Polypropylene/layered silicate nanocomposites were prepared from base polymer (10 MFI) and octadecylamine modified montmorillonite (1.30P nanomer), melt compounded with and without compatibilizer, i.e., maleic anhydride grafted polypropylene (Epolene-G3015). Physico-mechanical properties of the virgin PP and nanocomposites with different nanomer pe...

Hybrid composites consisting of polypropylene (PP) and short sisal fibers were prepared by melt mixing followed by compression molding. Various types of chemical treatments such as alkali treatment, cyanoethylation, coupling agent treatment etc. were performed to improve the interfacial adhesion between the fibers and PP matrix. Variations in fiber...

The degree of mechanical reinforcement that could be obtained by the introduction of glass fibres in biofibre (pineapple leaf fibre/sisal fibre) reinforced polyester composites has been assessed experimentally. Addition of relatively small amount of glass fibre to the pineapple leaf fibre and sisal fibre-reinforced polyester matrix enhanced the mec...

Coir composites had been prepared using coir fiber (both continuous and short fiber) as reinforcement with both thermosetting and thermoplastics as matrices. The composite specimens were prepared using both untreated and chemically modified such as defatted, PMMA grafted, PAN grafted and cyanoethylated coir fibers. Coir-polyester and glass/coir-pol...

A study of the graft copolymerization of acrylonitrile (AN) onto chemically modified coir fibers was carried out using a CuSO4 and NaIO4 combination as the initiator in an aqueous medium in a temperature range of 50–70°C. The graft yield was influenced by the reaction time, temperature, concentration of CuSO4, concentration of NaIO4, and monomer co...

This article concerns the effectiveness of various types and degrees of surface modification of sisal fibers involving dewaxing, alkali treatment, bleaching cyanoethylation and viny1 grafting in enhancing the mechanical properties, such as tensile, flexural and impact strength, of sisal-polyester biocomposites. The mechanical properties are optimum...