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8 articles for “wettability”
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Wettability of carbon fibers with resin matrices from dynamic contact angle measurements
Abstract: Wettability is the property that quantifies the propensity of a solid surface (carbon fiber) to be covered by a liquid (resin). For a wettable solid, the solid-liquid contact is favoured and as a result the liquid spreads on such surface of the solid. Spreading of the liquid on the solid surface is primarily driven by the adhesive forces between the liquid and the solid, while the inter molecular cohesive forces …
Published in International Journal of Composite Materials and Matrices · Vol. 11, Issue 2, 2025 Read article
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Experimental Studies on the Surface-Driven Microfluidic Flow of Dyed Working Liquids in Sudden Expansion Microchannels Fabricated by Polymer
Abstract: In this experimental work, the sudden expansion microchannels are fabricated by maskless lithography, hot embossing lithography, drilling, direct bonding technique and chip separation technique using own hands-on of author completely. Total 15 individual sudden expansion microchannels are fabricated in this work using polymethylmethacrylate (PMMA) as optically transparent polymer. Effects of channel aspect ratio, surface wettability and liquid viscosity on surface-driven microfluidic flow are experimentally studied in the fabricated sudden expansion …
Published in International Journal of Polymer Science and Engineering · Vol. 6, Issue 1, 2020 · pp. 44–59 Read article
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Review on the Capillary Flow Characteristics in Polymer based Microfluidic Systems
Abstract: In this review different effects to control the surface-driven capillary flow in polymer based microfluidic systems. Author has used the polymers like polyimide, SU-8 and polymethylmethacrylate (PMMA) to fabricate the polymer based microfluidic systems. Author has studied the individual effects of surface wettability, surface free energy, surface chemistry, surface topography, channel aspect ratio, capillary pressure, kinetic energy, centrifugal force, surface area to volume ratio, microfluidic friction, liquid viscosity and effective …
Published in International Journal of Polymer Science and Engineering · Vol. 4, Issue 1, 2018 · pp. 28–33 Read article
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Morphology and Elemental Composition of Carbon Fibers†
Abstract: Carbon fibers, owing to their unique property of high specific strength, find immense utility in almost all sectors of human activity, ranging from aeronautics, astronautics, geonautics, aquanautics, industry, catalysis, smart materials, defence, and many more. The production, properties, and applications of carbon fibers and related materials are a fertile and fast-growing research area drawing wide attention of researchers worldwide. The key feature of this original research paper is to study …
Published in International Journal of Composite Materials and Matrices · Vol. 11, Issue 1, 2025 Read article
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Experimental Studies on the Surface-Driven Capillary Flow of Water in Pristine and Processed Microfluidic Devices Fabricated by PMMA
Abstract: In this work, air dielectric barrier discharge (DBD) plasma processing on pristine polymethylmethacrylate (PMMA) flat surface is the chosen surface modification technique to vary the surface wettability creating a difference in microfluidic speed of dyed water. Straight microchannel of uniform width, microchannel with integrated micropillars on bottom wall, and microchannel bend are the proposed designs of PMMA microfluidic devices in this work. Each microfluidic flow of dyed water is recorded …
Published in International Journal of Chemical Engineering and Processing · Vol. 4, Issue 1, 2018 · pp. 33–38 Read article
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Facile Fabrication of Durable Superhydrophobic Coatings on SS 304 for biomedical applications
Abstract: A simple and effective method to fabricate durable superhydrophobic coatings by combining shot-blasting and depositing sol-gel nanocomposite coatings on stainless steel SS 304 substrates has been investigated. Shot-blasting was used for two purposes; 1) as a method of physical modification for creating microscale roughness on the substrate and 2) for improving the adhesion of the nanocomposite coatings deposited thereafter. Organic-inorganic hybrid hydrophobic silica sol was synthesized where silica nanoparticles were …
Published in International journal of Nanobiotechnology · Vol. 4, Issue 2, 2018 · pp. 21–34 Read article
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Dielectric Barrier Discharge Plasma Processing on Pristine PMMA Surfaces for Microfluidic Applications towards Applied Nanotechnology
Abstract: In this experimental work, a total of six individual microchannel bends as microfluidic devices are fabricated by maskless lithography, hot embossing lithography and direct bonding technique using polymethylmethacrylate (PMMA). Air dielectric barrier discharge (DBD) plasma processing is the selected surface modification technique in this particular experimental work. Dyed aqueous ethanol (10% ethanol, 90% dyed water) is the prepared working liquid to study the microfluidic flow characteristics. Effect of channel aspect …
Published in International Journal of Composite and Constituent Materials · Vol. 6, Issue 1, 2020 · pp. 1–7 Read article
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Low temperature plasma treatment of polymeric membranes: a comparative review
Abstract: This paper presents a comparative study of plasma surface modification of various polymeric membranes. Low temperature plasma treatment using pulsed direct current discharge of different gases was employed to enhance hydrophilicity of membranes. Radio frequency discharge of various gases was used to improve surface properties of different polymeric membranes. The enhancement of hydrophilicity of the plasma modified membrane surface was evaluated by measuring the contact angle. The membranes were characterized …
Published in International Journal of Polymer Science and Engineering · Vol. 6, Issue 1, 2020 · pp. 1–19 Read article