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323 articles for “polymer”
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Improving Prestressed Concrete Box Girders Using Polymer Composites: Experimental Findings and Analysis
Abstract: Prestressed concrete box girder bridges exhibit complex structural behavior due to various loading scenarios. Extensive studies, both experimental and numerical, have helped advance their use in engineering. The spatial stress in prestressed concrete box girder bridges, especially during construction and service phases, has been analyzed using shell cells, which provide more accurate tensile stress data than beam cells. The deck with the numerous hat section was evaluated in the current …
Published in International Journal of Polymer Science and Engineering · Vol. 10, Issue 2, 2024 · pp. 6–11 Read article
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Transforming Waste Plastics Through Pyrolysis: A Sustainable Solution for Polymer Resource Recovery
Abstract: The global accumulation of plastic waste, particularly polymers like polyethylene (PE), presents amajor environmental challenge, demanding innovative solutions for effective management. This studyfocuses on the chemical process of pyrolysis as a promising approach for polymer resource recoveryand environmental sustainability. Pyrolysis involves the thermal decomposition of plastic waste intovaluable products, such as liquid fuels, gases, and solid residues. Key parameters, such as temperature,heating rate, and residence time were optimized to enhance …
Published in International Journal of Polymer Science and Engineering · Vol. 10, Issue 2, 2024 · pp. 12–19 Read article
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Experimental Studies on the Surface-Driven Microfluidic Flow of Dyed Ethylene Glycol in Polymer Microfluidic Devices
Abstract: In this experimental work, three individual microfluidic devices are fabricated by polymethylmethacrylate (PMMA) using maskless lithography, hot embossing lithography and direct bonding technique. Straight microchannel having uniform width along entire channel length is the chosen design of microchannels before fabrication. Dyed ethylene glycol is prepared and used as working liquid. Effect of channel aspect ratio on surface-driven capillary flow of dyed ethylene glycol is studied. CMOS camera is used to …
Published in International Journal of Analytical and Applied Chemistry · Vol. 6, Issue 2, 2020 · pp. 17–22 Read article
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A Review on Potential Uses and Characterization of Okra Fiber Reinforced Polymer Composites
Abstract: The environment, ecology, and new rules from the government agencies are major concerns in the quick-paced society. As a result, scientists and researchers are searching for natural fiber reinforced composites that are biodegradable and renewable. Natural fibers have undeniable advantages over synthetic fibers, including low density, equivalent strength, non-toxicity, low cost, and minimal waste disposal issues. The possible uses of natural fibers have been thoroughly investigated by researchers. But in …
Published in International Journal of Environmental Chemistry · Vol. 8, Issue 2, 2022 · pp. 22–33 Read article
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Mechanical Behaviour of Natural Reinforced Polymer Composites with Hybrid Additives
Abstract: The implementation of natural fibres is the fast approaching ‘green’ economy based materials that are used in polymer matrix composites that are intended to replace the conventional synthetic polymer composites. Being plenteous fundamentally, natural fibres have been existed the primary form of natural resources for centuries. Considering that mechanical properties of composites are strongly influenced by the quality of the fibre/matrix interface and with eco-friendly properties like excellent energy absorption, …
Published in International Journal of Polymer Science and Engineering · Vol. 2, Issue 1, 2016 · pp. 7–12 Read article
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A Model to Study the Effect of Homogeneous Nucleation and Emulsifier Amounts on Methyl Methacrylate Emulsion Polymerization in a Seeded Semi-batch Reactor
Abstract: ABSTRACTAn extensive model is developed for methyl methacrylate emulsion polymerization. The assumption of monodispersed particle size distribution is used in developing the model. It is found that inclusion of homogeneous nucleation in the model leads to under prediction of variation of conversion with time. The effects of three different emulsifier amounts on the variation of conversion with time at 50°C isothermal reactor operation, keeping all the other ingredients constant are …
Published in International Journal of Polymer Science and Engineering · Vol. 5, Issue 2, 2019 · pp. 9–17 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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Advancement of Poly-(ADP – Ribose) Polymerase (PARP) Inhibitors in Cancer Progression and Treatment
Abstract: DNA repair mechanisms are the most common and potential targets in cancer treatment. PARP enzymes play a crucial role in detection of DNA damage and its repair and also in apoptosis. Detailed knowledge of these mechanisms leads to the development of poly-(ADP-Ribose) polymerase (PARP) inhibitors as vigorous anticancer drugs with specific action. PARP inhibitors can selectivity kill tumours with deficiencies in DNA repair proteins like BRCA1/2, exploiting synthetic lethality concept. …
Published in International Journal of Animal Biotechnology and Applications · Vol. 1, Issue 1, 2015 Read article
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Preparation and Performance Evaluation of LDPE/Rice Starch Blend Composites by Extrusion Method
Abstract: Discarding synthetic polymers such as low-density polyethylene (LDPE) used in food packaging ingredients is today considered a serious ecological threat because they are non-decomposable. The goal of this article is to create a decomposable polymer by incorporating a bio-polymer (starch) into its polymeric matrix. This article focuses on the preparation and characterization of rice starch (RS)-mixed LDPE decomposable polymer. In the first study, the effect of variability of RS content …
Published in International Journal of Chemical Engineering and Processing · Vol. 8, Issue 1, 2022 · pp. 1–22 Read article
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Thermodynamic Explanation on Surface-Driven Capillary Flow of Working Liquids in the Microfluidic Devices Fabricated by Polymers
Abstract: In this experimental work, total 100 individual microfluidic devices are fabricated by polymers using author’s own hands-on completely. A set of straight microchannels, gradual expansion microchannels, sudden expansion microchannels and sudden contraction microchannels are fabricated by SU-8 using the maskless lithography and indirect bonding technique. Another set of straight microchannels, gradual expansion microchannels, sudden expansion microchannels and sudden contraction microchannels are fabricated by PMMA using the maskless lithography, hot embossing …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 6, Issue 1, 2020 · pp. 45–70 Read article
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SEPARATION OF CO2/CH4 USING POLYMERIC MEMBRANES - REVIEW
Abstract: Separation of CO /CH mixture is widely done efficient separation of mixture into desired components unit processes and unit operation had 2 4 been developed with passage of time. Sometimes using conventional technologies. CO2 when carried along with CH4 can cause additional cost of pumping. Most commonly used technique like cryogenic separation, adsorption and absorption are used for decades for separation of CO2 form CH4.Membrane has been developing technology for …
Published in International Journal of Polymer Science and Engineering · Vol. 5, Issue 1, 2019 · pp. 13–29 Read article
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Experimental Demonstration on the Recording of Capillary-Filled Microfluidic Devices Fabricated by Polymeric Material
Abstract: In this present experimental work, total 52 individual PMMA microfluidic devices are fabricated by maskless lithography, hot embossing lithography and direct bonding technique in a cleanroom laboratory. The selected working liquids are dyed water, dyed aqueous ethanol and dyed aqueous isopropyl alcohol and are prepared in a materials-science laboratory. Fabricated microfluidic devices are tested by the prepared aqueous working liquids, and each capillary-filled device after the surface-driven microfluidic flow is …
Published in International Journal of Polymer Science and Engineering · Vol. 5, Issue 2, 2019 · pp. 31–41 Read article
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Short Report on the Effect of Atmospheric Dielectric Barrier Discharge Plasma Processing to Control the Capillary Flow in Polymer based Microfluidic Devices
Abstract: In this experimental work, a couple of microfluidic devices are fabricated by polymethylmethacrylate (PMMA) using the maskless lithography, hot embossing lithography and direct bonding technique. One device is fabricated by pristine PMMA, and the other device is fabricated by dielectric barrier discharge (DBD) plasma processed PMMA. Dyed water is selected and prepared as working liquid. Each surface-driven capillary flow of dyed water is recorded by a CMOS camera. This work …
Published in International Journal of Polymer Science and Engineering · Vol. 6, Issue 2, 2020 · pp. 1–4 Read article
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Experimental Demonstration on Polymer based Microfluidics
Abstract: In this experimental work, a single polymer based gradual expansion microchannel is designed. This microchannel is fabricated by the maskless lithography, hot embossing lithography and direct bonding technique inside the cleanroom laboratory. Dyed water is the prepared working liquid in this work. The surface-driven (passive) microfluidic flow of dyed water is recorded in the fabricated device using a CMOS camera catching 25 frames per second with a corresponding time-scale resolution …
Published in International Journal of Polymer Science and Engineering · Vol. 7, Issue 1, 2021 · pp. 23–26 Read article
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Fabrication of a Novel and Efficient Radiation Grafted Functionalized Polymer Adsorbent and Investigation of its Applicability in the Adsorptive Removal of Cr (VI) Ion from Aqueous Solution
Abstract: The grafting of glycidyl methacrylate (GMA) onto non-woven polyethylene (PE) fabric was accomplished using a radiation-initiated grafting technique. The grafted textiles were allowed to react using triethylamine to create functioning amine groups. Upon bond formation yield, the impact of grafting intensity has been examined. Utilizing the appropriate technologies, such as FTIR, TGA, and SEM, the adsorbents were rigorously examined. There was evidence of GMA grafting and diamines according to FTIR, …
Published in International Journal of Polymer Science and Engineering · Vol. 8, Issue 1, 2022 · pp. 1–15 Read article
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The Current and Potential Usage Areas of Shape Memory Polymer Composites in the Class of Multifunctional Materials
Abstract: Shape memory polymer composites can be programmed into a temporary shape and recover their original shape by applying different stimuli as temperature, UV, magnetic and electrical.In this way, SMPCs in the active and deformable material class, due to its advantages such as being activated by various activation methods and good biocompatibility properties, it has become the focus of research in the field of creating multifunctional materials. They are widely used …
Published in International Journal of Polymer Science and Engineering · Vol. 9, Issue 1, 2023 · pp. 1–4 Read article
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Experimental verification of strength of glass fiber reinforced polymer matrix composites
Abstract: An experimental investigation has been carried out to develop a new PMC (Polymer Matrix Composite) using commercially available Epoxy and Polyurethane resin systems. These resin systems would be reinforced with glass fibers, filler materials and aluminium foils. The laminates have been prepared by using the hand lay-up technique for eight layers and the mechanical tests such as tensile and compression test have been conducted for the PMC. This work has …
Published in International Journal of Structural Mechanics and Finite Elements · Vol. 3, Issue 1, 2017 · pp. 43–51 Read article
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Effect of Natural Cellulosic Fiber Surface Modifications on the Mechanical Feature Reinforced Polymer Composites
Abstract: The current era's remedies to global warming revolve around replacing fossil fuels with more ecologically friendly biodegradable materials in order to slow down the rate at which they are being depleted. Calotropis gigantea fruit bunch (CGFB) fiber is one kind of substitute material that this work envisage using in place of plastics in the construction of composite materials, as supported by the study literature. CGFB fiber was chosen for this …
Published in International Journal of Chemical Engineering and Processing · Vol. 11, Issue 1, 2025 Read article
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A Review of Examining the Mechanical Properties of Natural Fiber Reinforced Polymer Composites for the Automotive Sector
Abstract: The need for lightweight, sustainable materials has increased due to the growing global population, environmental issues, and the fast growth of the automotive sector. Because of their excellent mechanical and physical qualities as well as their environmentally beneficial character, natural fiber-reinforced composites have become a viable option. Due to their ability to blend strength with lightweight properties, these composites are gaining increasing popularity across various industries, including aerospace, automotive, sports, …
Published in International Journal of Composite and Constituent Materials · Vol. 11, Issue 1, 2025 · pp. 1–7 Read article
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Experimental Demonstration on Microfluidic-Leakage in SU-8 based Glass Devices for Applications towards the Polymer Microfluidics
Abstract: Classical mechanics and quantum mechanics belong to the first quantisation in physics. Quantummechanics is dependent on quantum theory. Quantum field theory is the second quantisation inphysics. Fluid mechanics is a branch of classical mechanics (non-quantum). Therefore, fluidmechanics is present at the first quantisation in physics. Bulk-fluidics (microfluidics), microfluidicsand nanofluidics are the three levels of fluid mechanics towards miniaturisation. In this experimentalwork, the microfluidic-leakage is prominently demonstrated by fabrication of 12 …
Published in International Journal of Analytical and Applied Chemistry · Vol. 7, Issue 1, 2021 · pp. 1–7 Read article