Journal of Surface Science and Technology <div id="i-scholarabout"><img class="media-object" style="width: 222px; float: left; margin: 0px 16px 15px 20px;" src="" /> <p style="margin-left: 261px;"><strong>Editor :</strong> S.P. Moulik<br /><strong>Online ISSN :</strong> 0976-9420<br /><strong>Print ISSN :</strong> 0970-1893<br /><strong>Frequency :</strong> Biannual<br /><strong>Publisher/s :</strong> Indian Society for Surface Science and Technology (ISSST), Informatics Publishing Limited</p> <!--p><a style="color: red; font-size: 20px;" href="/">Download SCOPUS LIST</a></p--> <p>The Indian Society for Surface Science and Technology is an organization for the cultivation, interaction and dissemination of knowledge in the field of surface science and technology. It also strives to promote Industry-Academia interaction.<br />Publishing the "Journal of Surface Science and Technology” with an International Editorial Board is the prime activity of the Indian Society for Surface, Science and Technology. <br /><br /><span style="color: blue;">The Journal is Indexed in Scopus with <a href=";tip=sid&amp;clean=0">H Index 13</a>, Included in UGC's - CARE List of Journals (Group A), ICI, Annexure-II-Anna University and ESCI.</span></p> </div> <p id="homecontent"><a href="" target="blank"><img src="" alt="" width="160" height="77" /></a><a href="" target="blank"><img src="" alt="" width="160" height="77" /></a><a href="#" target="_blank" rel="noopener"><img src="" alt="" /></a></p> en-US (Prof. S.P. Moulik) (Journal Coordinator - Poornima T) Thu, 12 May 2022 14:15:05 +0000 OJS 60 Study of Water Absorption Properties of Annealed Nanodiamond/Epoxy Nanocomposites Water absorption behavior of annealed Nanodiamond (ND) particle filled epoxy composite, has been studied. Removal of impurity present in the pristine ND and its surface modifications, were carried out by heat treatment. Different weight percent of ND (0.1, 0.3 and .05 wt. %) were incorporated in a commercial grade epoxy resin (L-12) in a controlled manner. A good and homogeneous distribution of ND in the composite, was observed. This resulted in reduction of mobility of the epoxy chain due to formation of highly immobile mono-layers around ND as well as formation of hydrogen bond between the ND and the epoxy. The water absorption and the contact angle properties of the resulting composites are measured. The results indicate that the water absorption as well as contact angle of the composite decrease with the increase of incorporated ND. It is observed that incorporation of ND into epoxy matrix, enhances the water resistance property of the composite. Baljit Singh, Akash Mohanty Copyright (c) 2021 Journal of Surface Science and Technology Thu, 12 May 2022 00:00:00 +0000 Microstructure, Corrosion Resistance and Wettability of Hydroxyapatite and Silver-Doped Hydroxyapatite In recent years, synthesis and characterization of Ag-based materials has become an active area of research due to its application in medical area for having antimicrobial properties useful for prosthetic replacement. Pure HydroxyAPatite (HAP) and 1.5wt% Ag-doped HydroxyAPatite (AgHAP) were prepared by sol-gel process and characterized. Ca(NO<sub>3</sub>)<sub>2</sub>.4H<sub>2</sub>O was used as source of Ca precursor, P<sub>2</sub>O<sub>5</sub> was used as a source of P precursor, and AgNO3 has been used as a source of Ag precursor. Pellets of HAP and AgHAP were made after precipitates were consolidated, dried in oven, grounded and sintered in a muffle furnace. Functional groups were determined using FTIR, and compound formations were investigated using XRD. Microstructural analysis was done using SEM and AFM. Wettability was studied using OCA in distilled water, and corrosion resistance and impedance analyses were carried out using ECA in Ringer solution. It was observed from AFM and XRD that grain size decreased from 7.05 ?m to 1.25 ?m. Improvement in corrosion resistance was observed in AgHAP. Wettability studies showed that AgHAP is more hydrophilic in comparison with pure HAP. A correlation between microstructures and properties of hydroxyapetites are discussed in this paper. Deep Shikha, S. K. Sinha, S. Murugesan Copyright (c) 2021 Journal of Surface Science and Technology Thu, 12 May 2022 00:00:00 +0000 Investigation of the effect of Graphene Nanoplatelet content on Flexural Behavior, Surface Roughness and Water Absorption of a Graphene Nanoplatelets Reinforced Epoxy Nanocomposites In the present work, the effect of Graphene nanoPlatelets (GnP) content on the flexural, surface roughness, and water absorption behavior of a GnP reinforced epoxy composite was investigated. Different wt.% of GnP (0.25, 0.5, 0.75, and 1 wt.%) was added into the epoxy matrix through the sonication method followed by the ball milling. The results indicate a significant enhancement in the flexural properties of the epoxy nanocomposite with the addition of GnP in the epoxy matrix. The optimum enhancement in the properties was obtained at 0.25 wt.% GnP incorporated epoxy composites. The increase in flexural strength and flexural modulus results were noticed as 42.7% and 49.2% when compared with neat epoxy. The surface roughness value for the loading of 0.25 wt.% of GnP into the epoxy showed a drop of 48.7% when compared with that of the neat epoxy sample. The loading of 0.25 wt.% of GnP into the epoxy also reduces the water absorption from 0.125% for the neat epoxy sample to 0.067% for the composite sample. The Scanning Electron Microscope (SEM) images of the fractured surface (flexural samples) of the GnP embedded epoxy composites show the river like pattern, which is the result of the better dispersion of the GnP in the epoxy matrix and thus shows improvement in flexural behaviour of such composite materials. A. Kesavulu, Akash Mohanty Copyright (c) 2021 Journal of Surface Science and Technology Thu, 12 May 2022 00:00:00 +0000 The aggregation of 1,3,4-thiadiazole based Hockey stick shaped Mesogen in Langmuir-Blodgett thin film in comparison to that of 1,3,4-oxadiazole Bent Core Mesogens are remarkably interesting achiral Liquid Crystals. These grab attention for their utility. The compound, taken for investigation, is a Schiff base addition product, composed of 2-(4β-aminophenyl)-5-(4?β-butyloxyphenyl)-1,3,4- thiadiazole and 4-n-hexadecyloxy salicylaldehyde. The property of this imine derivative is in accordance with liquid crystal and is a Bent Core Mesogen (BCM). The thin layers were prepared with the help of Langmuir-Blodgett apparatus. The morphology and photo-physical characteristics of thin films were examined in comparison to similar BCM derivative of 1,3,4-Oxadiazole. The expectation was the formation of monolayer of molecules on the substrate. Practically there were layer of clusters on the substrate. Both molecules form nano clusters. The typically different aggregates by the thiadiazole moiety in comparison to oxadiazole moiety are revealed. Cluster formation is also supported by the Atomic Force Microscopic (AFM) images. Alpana Baidya, Bandana Das, Santanu Majumder, Sandip Kumar Saha, Ranendu K. Nath, Manoj K. Paul Copyright (c) 2021 Journal of Surface Science and Technology Thu, 12 May 2022 00:00:00 +0000 Dye Adsorption Kinetics and Isotherm Study Using Surfactant-Modified Biomass: Influence of pH Substantiated with Quantum Chemical Validation The current study offers a comprehensive understanding on the adsorption study employing the cost-effective biomass as an effective substitute against high-cost treatment options. The present work put forth the adsorption of hazardous cationic dye: Crystal Violet (CV) from aqueous solution using Rice Husk (RH) and surfactant Modified Rice Husk (MRH). Effect of the adsorbents: RH and MRH onto CV removal is determined considering various experimental parameters viz., mass, volume, dye concentration, contact-time, equilibrium temperature, and pH where maximum CV adsorption was achieved at pH = 8. Results obtained are attributed to the favorable ion-pair formation between CV and anionic surfactant: Sodium Dodecyl Sulfate (SDS) which is validated further using quantum chemical calculations. To counterpart the sorption process onto the adsorbent, the adsorption study was validated employing several kinetic models and isotherms. The thermodynamic conduct concluded the CV adsorption to be spontaneous (negative ?G) and endothermic (positive ?H) in characteristic at ambient temperature i.e., adsorption increases with temperature. Bharatkumar Kanoje, Unnati Dani, Manjusha Shirdhonkar, Jigisha Parikh, Ketan Kuperkar Copyright (c) 2021 Journal of Surface Science and Technology Thu, 12 May 2022 00:00:00 +0000 Acid Modified Graphene Oxide from used Battery Rods Loaded with 2-{(E)-[(3-hydroxyphenyl) imino] methyl} phenol: Electrochemical Detection of Dopamine in Presence of Ascorbic Acid and Uric Acid in Aqueous Medium The graphite rods of used batteries have been utilized as source for Graphene Oxide (GO). The Acid Modified Graphene Oxide (AMGO) is loaded with Schiff base obtained from salicylaldehyde and 3-amino phenol. Glassy Carbon Electrode (GCE) surface when modified with the Schiff base loaded AMGO acts as electrochemical sensor for Dopamine (DA) in presence of Uric Acid (UA) and Ascorbic Acid (AA). Cyclic Voltammetry (CV), Square Wave Voltammetry (SWV) and Differential Pulse Voltammetry (DPV) shows well separated peaks for DA from UA and AA. The DA peak intensity increases in the three techniques with DA concentration. The linear range for the detection of dopamine is observed from 9.09 × 10<sup>-4</sup> M to 1.70 × 10<sup>-3</sup> M in presence of 1.00 × 10<sup>-1</sup> M Ascorbic Acid and 1.00 × 10<sup>-2</sup> M uric acid. The detection limit is estimated to be 9.38 × 10<sup>-10</sup> M. Diganta Kumar Das, Priyakshi Bordoloi Copyright (c) 2021 Journal of Surface Science and Technology Thu, 12 May 2022 00:00:00 +0000 Interfacial Interactions of Monoolein Langmuir Monolayers with Aqueous Salt Solutions Langmuir monolayer is a unique tool to characterize the interface which describes the properties of insoluble monolayer on the sub-phase. Langmuir monolayers have demonstrated the characteristics of many macromolecules as well as amphiphilic molecules at the air-water interface. We evaluated physiochemical characteristics of monoolein lipid Langmuir monolayers on different sub-phases. Interfacial behaviour of monoolein lipid was investigated using Wilhelmy plate pressure sensor technique to generate Langmuir isotherms to explore the effects of interactions with different sub-phases. Various salts alter the surface pressure of the Langmuir monolayer isotherms without the alteration of monolayer phase transitions. The finding of the present work can be effectively used for development of suitable biomedical formulations to offer sufficient strength of coating film with controlled topology and thickness using Langmuir-Blodgett film deposition technique. Addition of the suitable biocompatible ions in to the sub-phase is very crucial for their favourable interfacial interaction with the lipid molecules. Balaji S. Dhopte, V. N. Lad Copyright (c) 2021 Journal of Surface Science and Technology Thu, 12 May 2022 00:00:00 +0000 Anodising and Plasma Electrolytic Oxidation for the Surface Modification of Aluminium Alloys: Review Aluminium (Al) and its alloys are attractive for a variety of applications due to its advantages like light weight, ease of processing and high thermal/electrical conductivities. However, it suffers from shortcomings in terms of strength, wear resistance and corrosion resistance. Anodising is commonly used to improve the surface modification of Al alloys. This paper presents a review of anodising and related processes and updates the current status in this area. The chemical structure and the size of the oxide film are influenced by factors like temperature, type of electrolyte and current density/ applied voltage. Depending on the process parameters, the oxide film formed in this process can be thin, non-porous, thick, and porous. The hardness of the coating in anodizing is influenced by the parameters like coating thickness, voltage, current density, and temperature. Further, it is required to regulate the metal/oxide or film/solution interface at which the barrier film grows. In Plasma Electrolytic Oxidation (PEO), the modified version of anodising, and the selection of operating conditions influence coating morphology, structure and composition which in turn affect the wear resistance and corrosion properties. The properties of the coating in case of PEO process are influenced by the nature/structure of the base material, type/composition of electrolyte, temperature of the electrolyte during the process, oxidation time, and electrical parameter (current density and voltage). Understanding of the effect of these parameters on coating properties opens new vista for better application prospects. Baidehish Sahoo, Tanmoy Das, Jinu Paul Copyright (c) 2021 Journal of Surface Science and Technology Thu, 12 May 2022 00:00:00 +0000