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50 articles for “Copolymer”
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Facile Fabrication and Characterization of Novel Sterculia Gum–graft-poly(n-isopropylacrylamide-co-acrylamide) Hydrogel for Efficient Removal of Cationic Dyes from Aqueous Solution
Abstract: Water is indispensable component of life. Contamination of water is a severe problem that affects human health, aquatic vegetation, and fauna. Aside from various effluents, a variety of cationic dyes generated by industrial effluents contributes significantly to water contamination. In this study, a sterculia gum graft-poly(n-isopropylacrylamide-co-acrylamide) hydrogel was made using a graft copolymerization technique with N,N′-methylene-bis-acrylamide as a crosslinker, ammonium persulphate as an initiator, and tetramethylethylenediamine as an accelerator to …
Published in Journal of Polymer & Composites · Vol. 10, Issue 2, 2022 · pp. 29–59 Read article
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Influence of FEF (N550) Carbon Black on Rheological and Physico-mechanical Properties of SBR Vulcanizate for Tyre Application
Abstract: This study aims to investigate the synergistic effect of Fast extrusion furnace black on the rheological, surface morphological and physico-mechanical properties such as tensile strength, hardness and specific gravity of styrene-butadiene synthetic rubber composite. SBR is an elastomer which is an important sort of synthetic rubber. It is a copolymer whose molecular structure primarily consists of organic compound styrene and butadiene chain. Fast extrusion furnace black and high abrasion furnace …
Published in Journal of Polymer & Composites · Vol. 10, Issue 3, 2022 · pp. 48–58 Read article
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Design and Analysis of a Low Loss Polarization Maintaining Waveguide for Transmission of THz Waves
Abstract: AbstractThis paper presents the design of a novel porous core kagome lattice photonic crystal fiber (PCF) which acts as a low loss and polarization maintaining teraheartz (THz) waveguide. Using finite element method (FEM), properties of the proposed PCF are simulated in details including the effective material loss (EML), confinement loss, single mode propagation. Cyclic olefin copolymer, also known as TOPAS material have been chosen for the air micro structured inhibited …
Published in Trends in Opto-electro & Optical Communication · Vol. 6, Issue 3, 2016 · pp. 13–22 Read article
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Polymeric Microfluidic Chips for Rapid Point-of-Care Diagnostic Testing
Abstract: Polymeric microfluidic chips have emerged as promising platforms for rapid point-of-care (POC) diagnostic testing by integrating sample preparation, fluid manipulation, biochemical reactions, and signal detection within compact and potentially low-cost devices. Their compatibility with materials such as polydimethylsiloxane (PDMS), polymethyl methacrylate (PMMA), cyclic olefin copolymer (COC), polystyrene (PS), polycarbonate (PC), and polymer–paper composites provide considerable flexibility in device design and manufacturing. Advances in soft lithography, injection moulding, hot embossing, laser …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 Read article
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Chitosan-Based Polymer Coatings for Antimicrobial Catheter Surfaces
Abstract: Catheter-associated infections (CAIs) remain a major clinical challenge. Microbial adhesion and subsequent biofilm formation on catheter surfaces significantly reduce the effectiveness of antimicrobial therapy, resulting in prolonged hospitalization, increased healthcare costs, and higher patient morbidity. Consequently, the development of antimicrobial polymer coatings has emerged as an effective strategy for minimizing catheter-associated infections while improving device performance. Among the various biomaterials investigated, chitosan has attracted considerable attention owing to its intrinsic …
Published in Journal of Polymer & Composites · Vol. 14, Issue 4, 2026 Read article
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Exploring the Effect of Modified Nanosilica on a Model LDPE–EVA-based TPE System
Abstract: The effect of modified nanosilica particles on a model low-density polyethylene (LDPE)–ethylene vinyl acetate copolymer (EVA) based thermoplastic elastomer (TPE) blend system is explored in this article. Modified nanosilica particles were melt-blended with the LDPE-EVA system at 1.5, 3, and 5 wt% loadings through the variation of the sequence of addition. The blends were compression molded, and their morphological, rheological, mechanical and thermal properties were evaluated. The properties of the …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 17, Issue 3, 2015 · pp. 6–16 Read article
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Nanocomposites Based on LDPE–EVA Thermoplastic Elastomer (TPE): Effect of Laponite Clay
Abstract: The effect of pristine and modified laponite RD and RDS on a model low-density polyethylene (LDPE)—ethylene vinyl acetate copolymer (EVA) thermoplastic elastomer (TPE) blend system is explored in this article. The nanoclay particles are melt-blended with the LDPE–EVA system at 1.5 wt% loading. Both laponite RD and RDS are modified by ion exchange method utilizing dodecyl ammonium ion to improve the interaction of clay particles with polymer matrix. The blends …
Published in Nano Trends – A Journal of Nano Technology & Its Applications · Vol. 17, Issue 3, 2015 · pp. 17–27 Read article
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Dissolution Enhancement in Nano/Micro-Sized Dispersions of Piroxicam with the Novel Polymer Soluplus® and Polyvinyl Pyrrolidone
Abstract: Piroxicam, a Non-Steroidal Anti-Inflammatory Drug (NSAID), belongs to the class II of the biopharmaceutical classification system (BCS) and thus exhibits poor bioavailability. In an effort to tackle this issue, we report here the comparative properties of the solid dispersions of piroxicam made from a novel graft copolymer of polyvinyl caprolactam-polyvinyl acetate-polyethylene glycol (Soluplus) and the linear polymer polyvinyl pyrrolidone (K 25), both the dispersions synthesized identically using solvent evaporation method. …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 3, Issue 1, 2012 · pp. 10–19 Read article
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Synthesis, Crosslinking and Evaluation of Graft Polymer for Biomedical Use
Abstract: The objective of this research was focused on grafting of acrylic acid (AA) with hydroxypropyl methylcellulose (HPMC) to obtain copolymers of hydrogels with improved properties for ease of administration and reducing the dose frequency, improved patient compliance and comfort of sustained release medication. Water-absorbing polymers for hydrogels, the swellable polymeric materials have been widely investigated as the carrier for drug delivery system. These are the advanced polymer systems that hold …
Published in Research and Reviews: A Journal of Pharmaceutical Science · Vol. 3, Issue 1, 2012 · pp. 37–45 Read article
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A Review on Sodium Alginate: A Natural Polymer
Abstract: Polymer is large molecules (macromolecule) of natural or synthetics substances, composed of many repeated subunits of monomers. It is broadly classified into three types namely natural polymers, semi-synthetic and synthetic polymers. Natural polymers are having the advantages of biocompatibility, biodegradability and safety over synthetic polymers. The natural polymers have different roles and applications in the pharmaceutical formulations such as binders, matrix formers or drug release modifiers, film coating formers, thickeners …
Published in Research & Reviews: A Journal of Drug Formulation, Development and Production · Vol. 7, Issue 1, 2020 · pp. 1–5 Read article