Polymer membranes
Preliminary fabrication of biodegradable polymer membranes from renewable resources
... a polymer is transformed in a controlled manner from a liquid to a solid state (Zhang et ...microporous polymer membranes (Klempner & Frisch, ...
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Plasma modification of microporous polymer membranes for application in biomimetic dissolution studies
... Biomimetic membranes embody essential chemical, physical and topographical properties such as hydrophil- icity (unstirred aqueous layer, wettability of membrane from intestinal fluid), hydrophobicity ...
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Polymer Membranes based on Ionophore impregnated for Nutrients Detection by Electrochemical Methods
... Polymer membranes are becoming ever more attractive for trace analysis based on ionophore-impregnated; offering a wide variety of potential for an even wider variety of ...
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Gas Separations with Polymer Membranes pdf
... } polymer and polymer } polymer inter- actions improves and merges with advancing computer technology, widespread use of molecu- lar dynamics should provide signi R cant insight into gas separation ...
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Light Responsive Polymer Membranes: A Review
... Responsive polymer membranes are systems that sense the changes in their environment as a stimulus and make a desired ...responsive membranes hosting reactive functions is large and includes flat and ...
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Lipid Polymer Membranes as Carriers for L Tryptophan: Molecular and Metabolic Properties
... It has been reported that L-tryptophan has a specific orientation in model lipid membranes [13,31]. L-trypto- phan displays strong preference for the lipid membrane interface; in particular, indole prefers to ...
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Vibrational spectroscopy studies of interdiffusion in polymer laminates and diffusion of water into polymer membranes
... in polymer laminates at the interfacial region between the constituent polymer ...the polymer molecular weight, annealing temperature, and annealing time have been ...the polymer laminate is ...
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Salicylic Acid Complex Imprinted Polymer Membranes: Preparation and Separation Characteristics
... There was a slight weight loss of the two samples at tempera- tures between 50 and 350C, due to the loss of adsorbed wa- ter, acetonitrile, methanol and other volatile residuals. In the case of MIM, the large weight loss ...
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Enzyme Immobilization on Polymer Membranes: A Quantum and Molecular Mechanics Study
... on polymer surfaces is mainly controlled by electrostatic and hydrophobic interactions, as well as by the hydrogen bond at very short distances; thus, the surface charges of interacting systems are necessary to ...
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Penetrant-induced plasticization in glassy polymer membranes for gas separation
... The present paper deals with the performance of glassy polymer membnnes plasticized by penetrant gases. Penetrant-induced plasticization of gas separation_ membranes has been the[r] ...
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Preparation of PVDF/SiO2 Composite Nanofiber Membrane Using Electrospinning for Polymer Electrolyte Analysis
... prepare polymer membranes that are composed of ultrafine fibers with micron and sub-micron ...porous membranes by forcing a polymer melt or solution through a spinneret with an electric ...
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Physiochemical Characteristics of Solid Electrolyte Membranes for High-Temperature PEM Fuel Cell
... cross-linked polymer membranes showed high chemical stability due to their long chain and chain rigidity which refers to the stiffness of the ...bulk polymer has been associated with vibration ...
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Towards high performance metal–organic framework microporous polymer mixed matrix membranes : addressing compatibility and limiting aging by polymer doping
... permeable polymer, in combination with a high performance PIM-1 microporous polymer, we were able to manufacture MOF-based mixed matrix membranes with enhanced phase compatibility, and consequently ...
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Functionalized Polymeric Membranes for CO2 Capture
... metal membranes, and (3) porous inorganic membranes ...hybrid membranes including combinations of these three families are frequent and even desired for merging the general advantages of each ...
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Assessment of Electrochemical Methods for Methanol Crossover Measurement through PEM of Direct Methanol Fuel Cell
... A comparison of methanol permeability values obtained in the present studies with literature data for the Nafion ® 117 membrane is given in Table 1. From the Table, it is clear that the permeability values obtained in ...
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Incorporation of Cu3BTC2 nanocrystals to increase the permeability of polymeric membranes in O2/N2 separation
... high-quality membranes [11]. Hence, mixed-matrix mem- branes (composite membranes) have been proposed as a technically viable option to enhance the permeability and selectivity of polymer ...
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Membranes in Lithium Ion Batteries
... microporous polymer membranes are semi-crystalline polyolefin materials, like polyethylene (PE), polypropylene (PP) and their blends ...microporous membranes can be classified into dry process and ...
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Application of Salt Additives and Response Surface Methodology for Optimization of PVDF Hollow Fiber Membrane in DCMD and AGMD Processes
... PVDF hollow fibers were prepared by the dry/wet spinning process by using the spinning system as shown schematically and experimentally in Figure 1-a and b, respectively. Initially, a solution of Salt/DMAC was prepared ...
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Electrospun polymer nanofibers: the booming cutting edge technology
... multiple polymer and fi- ber substrate by electrostatically spinning polymer fibers on a moving base substrate ...the polymer droplet produced at the tip of the needle when an electric field is applied ...
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Gas Separation Properties of the Dense Polymer — Zeolite Powder Composite Membranes
... constructed membranes are compiled in Table ...versus polymer. The permeabilities of the membranes that contained white spots or white areas were not ...white. Membranes that appeared white ...
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