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Showing 1 to 20 of 48 for “"Responsive Polymers"”.
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Responsive polymers for optical sensing applications
LCST-type synthetic thermoresponsive polymers can reversibly respond to certain stimuli in aqueous media with a massive change of their physical state. When fluorophores, that are sensitive to such changes, are incorporated into the polymeric structure, the response can be translated into a …
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Interfacial Properties of Environmentally Responsive Polymers
… where the glycine side chains are ionized, the polymers exhibit stereotypical polyelectrolyte behavior. Side chain neutralization at pH 5.0 causes a substantial decrease in the film thickness, and the polymer films adhere strongly. The adhesion is presumably through H-bonding between the glycine …
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Thermally responsive polymers and their applications
… from water upon heating. The thermally responsive properties and applications of polyNIPA are introduced in Chapter One. In Chapter Two, we described the synthesis of polyNIPA gels with an imidazole comomoer and examined copper ion adsorption by the swollen (room temperature) and …
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Targeted and stimuli-responsive polymers as chemotherapeutic delivery systems
… can be increased through targeted, stimuli-responsive delivery, which increases the drug concentration at the diseased site, and releases or activates the drug only when it reaches the target. Cancer is a highly variable disease occurring in many organs. There is a need for delivery systems …
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Responsive polymers for dynamic modulation of bio-macromolecular transport properties
Responsive self-assembling polymers are used in wide range of applications in the food, pharmaceutical, agricultural, electronic and environmental industries, as well as in the biomedical field. The proper design of such polymers is critical for the particular applications being considered. In this …
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Design and Synthesis of Stimuli-Responsive Polymers with Programmable Cleavability
Polymers comprise a large portion of modern-day materials, from everyday plastics that we can hold and use, to nanomaterials imperceptible to the naked eye. Applying synthetic chemistry to impart structural changes to established polymers offers a promising path to introduce novel functionalities …
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Redox-responsive polymers for the reversible extraction of butanol from water
… The goal of this project was to develop a redox-responsive polymer which has preferential selectivity for butanol causing the polymer to selectively extract butanol from aqueous fermentation broth. On application of electric potential, the redox moieties in the polymer were oxidized and charged …
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pH-Responsive Polymers for Biosurfaces: An Investigation of Solution Properties and Surface Modifying Performance
<p>Gantrez® copolymers are used widely in the personal care industry, but their mechanisms of interaction with dental surfaces are poorly understood. In this study, we determined a number of the solution and polymer properties that control deposition, adsorption and adhesion in Gantrez® polymer …
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Development of Soft-Matter Delivery Systems: Coupling pH Responsive Polymers to Porous Silica Particles
… to coupling commercially available diblock polymers we synthesized and characterized a unique dual hydrophilic pH responsive diblock copolymer, PEO-PAA. This hybrid polymeric-nanoparticle system drastically improves targeting and release capabilities through the modular ability to couple …
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Reversible stimulus-responsive polymers for the control of the surface interfacial and nanomechanical properties
Surfaces with reversible stimulus-responsive properties have great potential for a wide variety of applications, such as transport, separation, and detection of biomolecules, controlled adhesion, friction, and lubrication in microfluidic systems, and force or displacement generation in micro- and …
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The multifarious self-assembly of triblock copolymers : from multi-responsive polymers and multi-compartment micelles
New ABC triblock copolymers were synthesized by controlled free-radical polymerization via Reversible Addition-Fragmentation chain Transfer (RAFT). Compared to amphiphilic diblock copolymers, the prepared materials formed more complex self-assembled structures in water due to three different …
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Adsorption/Desorption Process of Stimuli-Responsive Polymers on Simulated Natural Surfaces Using QCM-D & AFM Analysis
<p>The stimuli-responsive adsorption of polyelectrolytes to biosurfaces provides an important vehicle for development of protective coatings, delivery of therapeutic agents, and cosmetic applications. Developing a fundamental understanding of the mechanisms and kinetics of adsorption/desorption …
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Development of Novel Thermosensitive Polymers for Bioresponsive Drug Delivery
Stimuli-responsive polymers have already shotremendous promise in controlled and self-regulated drug delivery. Successful construction of responsive polymers requires amalgamation of chemical, physical and biological principles. For careful therapy, a great deal of advantages offered by …
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REDOX-RESPONSIVE POLYMER DELIVERY SYSTEMS FOR ANTI-CANCER DRUG AND IMAGING
… of safe and efficient delivery systems, stimuli-responsive polymers which undergo significant physical or chemical properties change in response to environmental variations are becoming more important. Exploring the much more reductive environment in intracellular compartments compared to …
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Functional and responsive surfaces via initiated chemical vapor deposition (iCVD)
Stimuli-responsive polymers provide a method to control system behavior through the use of an external stimulus, such as temperature, pH, or electric fields among others. Temperature-responsive polymers, especially those based on N-isopropylacryalmide (NIPAAm), are of particular research interest …
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POLY(N-ISOPROPYL ACRYLAMIDE)-COATED SURFACES: INVESTIGATION OF CYTOTOXICITY WITH MAMMALIAN CELLS AND THE MECHANISM OF CELL DETACHMENT
… tissues, such as those generated from stimulus-responsive polymers. Stimulus-responsive polymers undergo a physical or chemical change when a stimulus is applied. One such material is poly(N-isopropyl acrylamide), (pNIPAM), which undergoes a conformation change in a physiologically relevant …
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