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Browsing Journal Articles by Subject "Nanocomposites"

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Cellulose nanostructure-based biodegradable nanocomposite foams: A brief overview on the recent advancements and perspectives

Author: Motloung, Mpho P ; Ojijo, Vincent O ; Bandyopadhyay, Jayita ; Ray, Suprakash S Date: Jul 2019 The interest in designing new environmentally friendly materials has led to the development of biodegradable foams as a potential substitute to most currently used fossil fuel–derived polymer foams. Despite the possibility of developing ... Read more
Characteristic effects of alloying elements on ß solidifying titanium aluminides: A review

Author: Raji, Sadiq Abiola ; Popoola, API ; Pityana, Sisa L ; Popoola, OM Date: Jul 2020 The high strength-to-weight ratio property of titanium aluminide (TiAl) based intermetallic alloys makes researchers regard this type of material as a potential replacement for the heavier superalloys of nickel. These alloys have been applied ... Read more
Concurrent Enhancement of Multiple Properties in Reactively Processed Nanocomposites of Polylactide/Poly[(butylene succinate)-co-adipate] Blend and Organoclay

Author: Ojijo, Vincent O ; Ray, Suprakas S ; Sadiku, R Date: May 2014 Polylactide (PLA) and poly[(butylene succinate)-co-adipate] (PBSA) were reacted by being blended in a batch mixer in the presence of a chain extender, triphenyl phosphite (TPP), and two different types of organically modified clays—a ... Read more
Development of microbial resistant Carbopol nanocomposite hydrogels via a green process

Author: Varaprasad, K ; Reddy, SM ; Jayaramudu, J ; Sadiku, R ; Ramama, K ; Ray, Suprakas S Date: 2014 The present scientific research resulted in the development of novel microbial resistant inorganic nanocomposite hydrogels, which can be used as antibacterial agents. They are promising candidates for advanced antimicrobial applications in ... Read more
Effect of clay nanofillers on the mechanical and water vapor permeability properties of xylan–alginate films

Author: Naidu, Darrel S ; Mathew, Maya J Date: Oct 2020 In this study, xylan–alginate-based films were reinforced with nanoclays (bentonite or halloysite) by the solvent casting technique. The effect of the nanoclay loadings (1–5 wt %) on various properties—mechanical, optical, thermal, solubility, ... Read more
Effect of organically modified layered double hydroxides on the properties of poly(lactic acid)/poly[(butylene succinate)-co-adipate] immiscible blends

Author: Mhlabeni, Thobile L ; Kesavan Pillai, Sreejarani ; Ray, Suprakas S Date: Nov 2019 In this study, poly(lactic acid) (PLA)/poly[(butylene succinate)-co-adipate] (PBSA) blend and its nanocomposites with layered double hydroxides (LDH) containing surface stearic acid functional groups (SaLDH) were prepared using the extrusion ... Read more
Effect of organoclay on the orientation and thermal properties of liquid-crystalline polymers

Author: Bandyopadhyay, J ; Ray, SS ; Bousmina, M Date: Aug 2007 The preparation and thermal and thermo-mechanical properties of nanocomposites based on liquid-crystalline polymers (LCP) and organically-modified layered silicate (OMLS) is described. From XRD patterns, very little smectic ordering is present ... Read more
Electrochemical performance of two-dimensional Ti3C2-Mn3O4 nanocomposites and carbonized iron cations for hybrid supercapacitor electrodes

Author: Oyedotun, KO ; Momodu, DY ; Naguib, M ; Mirghni, AA ; Khaleed, AA ; Kebede, Mesfin A ; Manyala, Ncholu Date: Apr 2019 In this work, we present a simple two-step synthesis route to develop a cost effective high performance Ti(sub3)C(sub2)eMn(sub3)O(sub4) nanocomposite via a solvothermal process at 150 degrees celsius. The characterization of the composite ... Read more
Enhancing the adhesion strength of polyurethane coatings by dispersing layered silicates via sonication and high-shear mixing method

Author: Skosana, Sifiso J ; Khoathane, C ; Malwela, Thomas Date: Jan 2020 Low adhesion strength of polyurethane coating to a steel substrate is often attributed to poor steel preparation. However, the ratio of diisocyanate/polyol and dispersion of fillers within a polyurethane coating matrix influence the adhesion ... Read more
Graphenated tantalum(IV) oxide and poly(4-styrene sulphonic acid)-doped polyaniline nanocomposite as cathode material in an electrochemical capacitor

Author: Njomo, N ; Waryo, T ; Masikini, M ; Ikpo, CO ; Mailu, S ; Tovide, O ; Ross, N ; Williams, A ; Matinise, N ; Sunday, CE ; Mayedwa, N ; Baker, PGL ; Ozoemena, KI ; Iwuoha, EI Date: May 2014 Nanostructured poly(4-styrene sulphonic acid) and tantalum (IV) oxide-doped polyaniline nanocomposite were synthesised and their electro-conductive properties were determined. The oxide was synthesized using a modified sol-gel method and then ... Read more
Gum karaya based hydrogel nanocomposites for the effective removal of cationic dyes from aqueous solutions

Author: Mittala, H ; Maity, Arjun ; Ray, Suprakas S Date: Feb 2016 Biodegradable hydrogel nanocomposites (HNC) of gum karaya (GK) grafted with poly(acrylic acid) (PAA) incorporated silicon carbide nanoparticles (SiC NPs) were synthesized using the in situ graft copolymerization method and tested for the ... Read more
High-performance towards removal of toxic hexavalent chromium from aqueous solution using graphene oxide-alpha cyclodextrin-polypyrrole nanocomposites

Author: Chauke, VP ; Maity, Arjun ; Chetty, A Date: Jul 2015 Graphene oxide (GO) was functionalized with alpha cyclodextrin (aCD) through a covalent bond to form GO-aCD nanocomposites (NC). GO-aCD NC was further modified with polypyrrole (PPY) to afford an advanced GO-aCD-PPY NC for the removal of ... Read more
The investigation of reinforcement properties of nano- CaCO3 synthesized from Achatina fulica snail shell through mechanochemical methods on epoxy nanocomposites

Author: Gbadeyan, OJ ; Adali, BJ ; Bright, G ; Sithole, Bishop B Date: Jun 2021 The current study investigates the reinforcement properties of novel nano-calcium carbonate (nano-CaCO(sub3)) synthesized from Achatina fulica snail shell. The shell was wet-milled to nanoparticle sizes using mechanochemical procedures. Epoxy ... Read more
Kinetically controlled localization of carbon nanotubes in polylactide/poly(vinylidenefluoride) blend nanocomposites and their influence on electromagnetic interference shielding, electrical conductivity, and rheological properties

Author: Salehiyan, Reza ; Nofar, M ; Ray, Suprakash S ; Ojijo, Vincent O Date: Jul 2019 This study illustrates the effects of the kinetic parameters [processing time, polyvinylidene fluoride (PVDF) viscosity, carbon nanotube (CNT) aspect ratio, and processing method] on the CNT migration and consequently the viscoelastic properties, ... Read more
Luminescent, magnetic and optical properties of ZnO-ZnS nanocomposites

Author: Raleaooa, PV ; Roodt, A ; Mhlongo, Gugu H ; Motaung, David E ; Kroon, RE ; Ntwaeaborwa, OM Date: Feb 2017 The structure, particle morphology, optical and magnetic properties of ZnO, ZnS and ZnO-ZnS nanoparticles prepared by the sol-gel method are reported. ZnO and ZnS were combined at room temperature by an ex situ synthetic route to prepare ... Read more
Mechanical and rheological response of polypropylene/boehmite nanocomposites

Author: Pedrazzoli, D ; Tuba, F ; Khumalo, VM ; Pegoretti, A ; Karger-Kocsis, J Date: 2014 In this work the influence of synthetic boehmite alumina (BA) nanoparticles with various surface treatments on the morphology, crystallization behavior and mechanical properties of polypropylene copolymer (PP) nanocomposites was studied. In ... Read more
Optimization and mechanism elucidation of the catalyticphoto-degradation of the dyes Eosin Yellow (EY) and Naphthol blueblack (NBB) by a polyaniline-coated titanium dioxide nanocomposite

Author: Debnath, S ; Ballav, N ; Nyoni, H ; Maity, Arjun ; Pillay, K Date: Feb 2015 A polyaniline-coated titanium oxide nanocomposite (PTO) was synthesized, characterized and used in the catalytic photo-degradation of the anionic dyes Eosin Yellow (EY) and Naphthol blue black (NBB). An emphasis was placed on the key parameters ... Read more
Poly( E-caprolactone) nanocomposite scaffolds for tissue engineering: a brief overview

Author: Mkhabela, VJ ; Ray, Suprakas S Date: 2014 Polycaprolactone is a bioresorbable polymer that has been extensively used in the biomaterials field and a number of drug-delivery systems. The superior rheological and viscoelastic properties of this polymer render it easy to manufacture and ... Read more
Polymer nanocomposite processing, characterization, and applications 2013

Author: Mago, G ; Ray, Suprakas S ; Shofner, ML ; Wang, S ; Zhang, J Date: Feb 2014 Nanoparticles, such as carbon nanotubes, nanoclays, and graphenes, are widely used in the polymer nanocomposites to alter the chemical, mechanical, electrical, optical, and thermal properties. However, a number of critical issues need to be ... Read more
Polymer-noble metal nanocomposites: Review

Author: Folarin, OM ; Sadiku, ER ; Maity, Arjun Date: Sep 2011 Polymer-noble metal nanocomposites have been extensively investigated due to their potential ability to provide materials with novel mechanical, electronic or chemical behaviour for technological applications. Many preparative procedures have ... Read more

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