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5 articles for “ring opening”
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Tribological Assessment of Chemically Modified Jatropha Curcas Oil Developed by Addition of Graphite Nanoparticles for Biolubricant Applications
Abstract: As an alternative to petroleum-based lubricants, environmentally friendly bio-based lubricants are gaining popularity in the lubrication industry. A sustainable bio-based lubricant, Jatropha Curcas Oil (JCO) incorporates nanoparticles as additives. Nevertheless, this oil cannot be used directly as a biolubricant due to its low oxidative stability. By redesigning the oil's molecular structure through chemical modification, this restriction can be overcome. Epoxidation and oxirane ringopening were the two steps used in this …
Published in Journal of Polymer & Composites · Vol. 13, Issue 2, 2025 · pp. 47–58 Read article
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Polymer Chemistry-Driven Approaches for Improved Therapeutic Delivery
Abstract: Polymer chemistry has revolutionized pharmaceutical technology by enabling the development of advanced drug delivery systems with improved precision, stability, and therapeutic outcomes. This review explores the role of polymer design, synthesis, and functionalization in the development of responsive and targeted drug carriers. Emphasis is placed on various types of polymers—biodegradable, synthetic, natural, and stimuli-responsive—and their suitability for drug delivery platforms such as nanoparticles, micelles, hydrogels, dendrimers, and implants. The physicochemical …
Published in Journal of Polymer & Composites · Vol. 13, Issue 6, 2025 Read article
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Harnessing Polymer Chemistry for Pharmaceutical Technology
Abstract: Polymer chemistry has emerged as a cornerstone of modern pharmaceutical technology, offering unprecedented control over drug formulation, delivery, and therapeutic performance. This review highlights the pivotal role of polymers—both synthetic and natural—in revolutionizing drug delivery systems across various routes, including oral, parenteral, transdermal, ocular, nasal, and pulmonary administration. Special emphasis is placed on the structural and functional versatility of polymers, which allows for tailored drug release profiles, enhanced bioavailability, and …
Published in Journal of Polymer & Composites · Vol. 14, Issue 1, 2026 · pp. 1–6 Read article
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Study on the Profile and Flow Field Variation of Parachute Coating by Seven-hole Probe Method
Abstract: In general, the parachute test is a long test cycle, expensive, and difficult to measure with accuracy, which makes it a very laborious and time-consuming task. Therefore, attempts have been made to overcome this by using a parachute test stand or by simulation, but in our country, there is no numerical simulation of the parachute and there is no research on it. In this paper, the variation of the shape …
Published in Journal of Aerospace Engineering & Technology · Vol. 14, Issue 1, 2024 · pp. 26–37 Read article
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Fluid-Structure Interaction Simulation of Parachute by Eulerian-Lagrangian penalty method
Abstract: In general, modeling and simulation of a model consisting of fluid and solid combinations has been considered difficult, and it has become impossible in terms of computer dependencies and accuracy to be analyzed by Fluent or other programs. The parachute evaluation process, which is historically based on a large amount of experimental data, necessitates many falling experiments. These tests can be costly and time-consuming, and they don't always allow for …
Published in Recent Trends in Fluid Mechanics · Vol. 11, Issue 2, 2024 · pp. 15–22 Read article