Download or read book Thermodynmics and Structure of Poly ethylene Oxide in Mixtures of Water and Ethanol written by Sand Hak Shin and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ThermodynamicS AND STRUCTURE OF POLY ETHYLENE OXIDE IN MIXTURES OF WATER AND ETHANOL written by and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Poly(ethylene oxide) (PEO) is one of the most researched synthetic polymers due to the complex behavior which arises from the interplay of the hydrophilic and hydrophobic sites on the polymer chain. PEO in ethanol forms an opaque gel-like mixture with a partially crystalline structure. Addition of a small amount of water disrupts the gel: 5 wt % PEO in ethanol becomes a transparent solution with the addition of 4 vol % water. The phase behavior of PEO in mixed solvents have been studied using small-angle neutron scattering (SANS). PEO solutions (5 wt % PEO) which contain 4 vol % - 10 vol % (and higher) water behave as an athermal polymer solution and the phase behavior changes from UCST to LCST rapidly as the fraction of water is increased. 2 wt % PEO in water and 10 wt % PEO in ethanol/ water mixtures are examined to assess the role of hydration. The observed phase behavior is consistent with a hydration layer forming upon the addition of water as the system shifts from UCST to LCST behavior. At the molecular level, two or three water molecules can hydrate one PEO monomer (water molecules form a sheath around the PEO macromolecule) which is consistent with the suppression of crystallization and change in the mentioned phase behavior as observed by SANS. The clustering effect of aqueous PEO solution (M.W of PEO = 90,000 g/mol) is monitored as an excess scattering intensity at low-Q. Clustering intensity at Q = 0.004 Å^-1 is used for evaluating the clustering effect. The clustering intensity is proportional to the inverse temperature and levels off when the temperature is less than 50 ̊C. When the temperature is increased over 50 ̊C, the clustering intensity starts decreasing. The clustering of PEO is monitored in ethanol/ water mixtures. The clustering intensity increases as the fraction of water is increased. Based on the solvation intensity behavior, we confirmed that the ethanol/ water mixtures obey a random solvent mixing rule, whereby solvent mixtures are bette

Download or read book CRC Handbook of Enthalpy Data of Polymer Solvent Systems written by Christian Wohlfarth and published by CRC Press. This book was released on 2006-02-21 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: The CRC Handbook of Enthalpy Data of Polymer-Solvent Systems presents data that is as essential to the production, process design, and use of polymers as it is to understanding the physical behavior and intermolecular interactions in polymer solutions and in developing thermodynamic polymer models. Providing an all-encompassing collection

Download or read book Handbook of Poylmer Liquid Interaction Parameters and Solubility Parameters written by AllanF.M. Barton and published by Routledge. This book was released on 2018-05-02 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt: Now available for the first time, this valuable reference presents polymer solubility parameters and various polymer-liquid interaction parameters in an easy-to-use form. It critically evaluates and comprehensively compiles data from original sources. It presents these quantities polymer-by-polymer, alphabetically by polymer common chemical name, fully cross-referenced by systematic chemical names, alternative names and trade names. This one-of-a-kind handbook summarizes the relationship between the various quantities and their methods of determination. This resource is an absolute must for all who are interested in the chemical industry, specifically polymer chemistry, chemical engineering, applied chemistry, and physical chemistry.

Download or read book CRC Handbook of Liquid Liquid Equilibrium Data of Polymer Solutions written by Christian Wohlfarth and published by CRC Press. This book was released on 2007-11-19 with total page 687 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermodynamic data form the basis for separation processes used in different fields of science and industry, from specialty chemicals to foods and pharmaceuticals. One obstacle to developing new production processes, products, or optimization is the lack, or inaccessibility, of experimental data related to phase equilibrium. Access More Than 1200 Data Sets, Including 810 Binary Systems, 325 Ternary Systems, and 25 Quaternary (or Higher) Systems The CRC Handbook of Liquid-Liquid Equilibrium Data of Polymer Solutions provides a thorough and up-to-date compilation of experimental liquid-liquid equilibrium (LLE) data and their original sources. Arranged in a consistent format, the handbook provides convenient access to cloud-point and coexistence data as well as upper and lower critical solution temperatures and important demixing data for each system. An Excellent Companion to the Author’s Previous Collections of Thermodynamic Data! While the author’s previous data compilations center around specific types of polymer systems, Wohlfharth’s latest work distinguishes itself by focusing instead on representing LLE data for all types of polymer systems in a single source.

Download or read book Polymer Micelles written by Shin-ichi Yusa and published by MDPI. This book was released on 2018-04-20 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Polymer Micelles" that was published in Polymers

Download or read book Thermodynamics of Some Concentrated Solutions of Polyethylene Oxide written by Yen-huang Chang and published by . This book was released on 1974 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Interaction of Poly ethylene Oxide with Water written by N. E. Nwachuku and published by . This book was released on 1977 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quarterly Journal of the Chemical Society of London written by Chemical Society (Great Britain) and published by . This book was released on 1970 with total page 1416 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin of Chemical Thermodynamics written by and published by . This book was released on 1987 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Journal of the Chemical Society written by and published by . This book was released on 1988 with total page 1456 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Thermodynamic Properties of Mixtures of Water Ethanol Between 298 15 and 383 15 K written by J A.. Larkin and published by . This book was released on 1976 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Solution Thermodynamics of Poly vinyl Pyrrolidone in Ethanol CCl4 Mixtures written by Fanny Schwager and published by . This book was released on 1996 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interactions in Mixtures of Poly ethylene Oxide and Poly methyl Methacrylate written by H. Ito and published by . This book was released on 1987 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Russian Journal of Physical Chemistry written by and published by . This book was released on 1976 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A thermodynamic and spectroscopic study of ethylene oxide written by Charles William Arnold and published by . This book was released on 1954 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chemical Physics of Polymer Nanocomposites written by Vera V. Myasoedova and published by John Wiley & Sons. This book was released on 2024-07-17 with total page 1162 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive knowledge on the preparation, characterization, and applications of polymer nanocomposites Chemical Physics of Polymer Nanocomposites examines the state of the art in preparation, processing, characterizing, and applying a wide range of polymer nanocomposites, elucidating nanofiller/polymer interactions, nanofiller dispersion, distribution, filler-filler interactions, and interface properties, with a particular focus on the rheology of this important class of materials. The dependence of the rheological properties on the preparation techniques is discussed in detail, complemented by an overview of the processing approaches using conventional and micro injection molding, extrusion, compression molding, film blowing, pultrusion, and resin transfer molding. The book covers the latest understanding and accomplishments on polymer composites and presents the huge variety of this materials class. Practice-oriented with industry relevance, it also reviews preparation, characterization, morphology, properties, applications, sustainability, and recyclability. The topics covered in Chemical Physics of Polymer Nanocomposites include: Classification of nano fillers, nano-objects, nanomaterials, and polymer nanocomposites based on chemical nature and identity, and synthesis and characterization of nanoparticles General manufacturing methods and processes, including melt and shear mixing manufacturing of polymer nanocomposites 1D nano fillers and polymer nanocomposites, including polymer nanocomposites based on graphite nanoplatelets (GNP) and amphiphilic graphene platelets Polymer nanocomposites based on nano chitin, starch, and lignin, gold nanowires, titanium dioxide, and graphene and graphene oxide Chemical Physics of Polymer Nanocomposites is an essential resource for materials scientists, polymer chemists, chemical engineers, and engineering scientists in industry.