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Concentration And Temperature Affects On The Shear Dependent And Newtonian Viscosities In Concentrated Polymer Solutions With Volatile Solvents
Download Concentration And Temperature Affects On The Shear Dependent And Newtonian Viscosities In Concentrated Polymer Solutions With Volatile Solvents full books in PDF, epub, and Kindle. Read online Concentration And Temperature Affects On The Shear Dependent And Newtonian Viscosities In Concentrated Polymer Solutions With Volatile Solvents ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Concentration and Temperature Affects on the Shear Dependent and Newtonian Viscosities in Concentrated Polymer Solutions with Volatile Solvents by : Robert W. Foster
Download or read book Concentration and Temperature Affects on the Shear Dependent and Newtonian Viscosities in Concentrated Polymer Solutions with Volatile Solvents written by Robert W. Foster and published by . This book was released on 1986 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Masters Theses in the Pure and Applied Sciences by : Wade H. Shafer
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 32 (thesis year 1987) a total of 12,483 theses titles from 22 Canadian and 176 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 32 reports theses submitted in 1987, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Book Synopsis Viscosity of Polymer Solutions by : Miloslav Bohdanecký
Download or read book Viscosity of Polymer Solutions written by Miloslav Bohdanecký and published by Elsevier Science & Technology. This book was released on 1982 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Molecular Mass, Concentration and Temperature on the Rheological Properties of Non-newtonian Aqueous Polymeric Solutions by : Rupesh Bhatia
Download or read book Effect of Molecular Mass, Concentration and Temperature on the Rheological Properties of Non-newtonian Aqueous Polymeric Solutions written by Rupesh Bhatia and published by . This book was released on 2011 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental study has been conducted to understand the rheological behavior of several non-newtonian polymeric liquids. A constant stress/strain rheometer with cone and cylinder geometry is used to determine the variation of shear stress (and hence apparent viscosity) with shear rate. A number of non-newtonian polymeric liquids that consist of carefully prepared aqueous solutions of Hydroxyethylcellulose (HEC), Polyethyleneoxide (PEO), Carboxymethylcellulose (CMC), Xanthan gum, and Polyacrylic acid (Carbopol) are used in this study. In order to ascertain the effect of molecular mass of the polymers on the apparent viscosity variation with shear rate, different grades of each polymer are used. The tests are done for varying concentrations and temperatures (23-80 deg C) to determine their requisite effects on rheology. Also, intrinsic viscosity of each polymeric liquid is obtained by using an Ubbelohde capillary tube viscometer. This characterizes the inherent capacity of each polymer to alter its solutions viscosity. Depending upon the polymer and its concentration, the results show both shear-thinning behavior with shear rate as well as time-dependent (thixotropy) effects. Time-dependent effects, which are found to be a strong function of concentration and temperature, are evaluated by measuring viscosity by first increasing and successively decreasing the shear rates. The zero-shear viscosity and shear-thinning effects are seen to decrease with concentration. In general for most polymers, high temperatures decrease the viscosity of the solution, with the exception of Carbopol for which the viscosity is seen to increase slightly with temperature and then decrease at even higher temperatures. Carbopol polymers also show thixotropic effects at higher temperatures which are significant at 80 deg C. They further exhibit yield stress at higher concentrations and no yield stress is noticed at lower concentrations. A number of models described in the literature are used to fit the rheological data. It is noticed that the modified power-law model, Sisko model and Herschel Bulkley model are insufficient approximations of the asymptotic forms and hence, could not be used to describe the rheological behavior of all the polymers. The appropriately modified and redefined asymptotic forms of all these models are used to correctly fit the data for various polymers. The variation of the different model parameters with changes in concentration and temperature are quantified, and a detailed comparative study on the effects of molecular mass, concentration, and temperature on rheological properties is presented.
Author :Werner-Michael Kulicke Publisher :Springer Science & Business Media ISBN 13 :3662107961 Total Pages :132 pages Book Rating :4.6/5 (621 download)
Book Synopsis Viscosimetry of Polymers and Polyelectrolytes by : Werner-Michael Kulicke
Download or read book Viscosimetry of Polymers and Polyelectrolytes written by Werner-Michael Kulicke and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: This laboratory handbook offers clear guidelines and tips for the practical everyday application of viscosimetry, as well as supplying a comprehensive companion for the interpretation of viscosimetric data from simple to complex polymer solutions.
Book Synopsis The Effect of Concentration on the Viscosity of Dilute and Moderately Concentrated Polymer Solutions by : Hwa Luh
Download or read book The Effect of Concentration on the Viscosity of Dilute and Moderately Concentrated Polymer Solutions written by Hwa Luh and published by . This book was released on 1967 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The effect of concentration on the viscosity of dilute and moderately concentrated polymer solutions was studied for eight narrow molecular weight polystyrene samples (900
Book Synopsis The Effect of Concentration on the Viscosity of Polyisobutylene Solutions by : Lung-Yu Chou
Download or read book The Effect of Concentration on the Viscosity of Polyisobutylene Solutions written by Lung-Yu Chou and published by . This book was released on 1966 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: "In the past twenty years the viscosity of dilute polymer solutions (i.e., where the solute molecules are far apart) has been investigated in great detail, both theoretically and experimentally. The viscosity characteristics of such systems are well-understood. Only a few studies have been made of the effect of concentration on the viscosity of polymer solutions in the concentration range where the polymer molecules begin to overlap. This range of concentrations is important in practical applications such as dry spinning of fibers, cross-graded automotive motor oils and in many industrial formulations where polymers are used to thicken solvent vehicles. Development of correlations for predicting viscosities in this concentration range from dilute solution measurements (intrinsic viscosities) is needed. It was the purpose of this investigation to obtain accurate viscosity-concentration data in the dilute and in the moderately concentrated range in polyisobutylene solutions in order to correlate these measurements and the literature data on other polymer-solvent systems with concentration and intrinsic viscosity. The effects of the nature of the solvent and polymer molecular weight were studied along with the effect of concentration"--Introduction, leaf 2.
Book Synopsis Liquid Crystalline and Mesomorphic Polymers by : Valery P. Shibaev
Download or read book Liquid Crystalline and Mesomorphic Polymers written by Valery P. Shibaev and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Among the various new directions in modern polymer science, the design and investigation of liquid crystal (LC) polymers have been the ones growing most actively and fruitfully. In spite of that, the possible formation of an anisotropic LC phase was only demonstrated theoretically for the first time in the 1950s by Onsager [1] and Flory [2], and then experimentally verified in the studies with polypeptides solutions. In essence, the studies of these LC lyotropic systems did not deviate from the theme of purely academic interest. It was at the beginning of the 1970s that the experimental "explosion" occurred, when aromatic polyamides were synthesized and their ability to form LC solutions in certain very aggressive solvents was discovered. The search for practical applications of such LC systems was crowned with the successful creation of the new generation of ultrastrong high-modulus ther mostable fibers, such as the Kevlar, due to the high degree of order of the macromolecules in the anisotropic LC state. In fact, these investigations coincided with the swift emergence on the practical "scene" of thermotropic low-molar-mass liquid crystals, with the use of these materials in microelectronics and electro optics (figures and let ters indicators, displays in personal computers, and flat TV, etc.). Polymer scientists also began to develop methods of synthesizing thermotropic LC polymers by incorporating mesogenic fragments in the main (main-chain LC polymers) or side branchings of the macromolecules (side-chain or comb shaped polymers).
Book Synopsis Solvent and Concentration Effects on Diffusion and Viscosity of Polymer Solutions by : Chitrangad
Download or read book Solvent and Concentration Effects on Diffusion and Viscosity of Polymer Solutions written by Chitrangad and published by . This book was released on 1973 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Index written by and published by . This book was released on 1969-07 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mechanism of Shear and Concentration Effects on Polymer Solution Viscosity by : John Cadwallader
Download or read book Mechanism of Shear and Concentration Effects on Polymer Solution Viscosity written by John Cadwallader and published by . This book was released on 1960 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dokumentation Rheologie written by and published by . This book was released on 1986 with total page 1158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurements of Viscosity and Stress Relaxation of Concentrated High Polymer Solutions by : Frederic William Schremp
Download or read book Measurements of Viscosity and Stress Relaxation of Concentrated High Polymer Solutions written by Frederic William Schremp and published by . This book was released on 1950 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Effect of Polymer/solvent Interactions on the Dynamic Viscoelasticity and the Oscillatory Flow Birefringence Properties for Polyisoprene Solutions by : Paul Andrew Merchak
Download or read book The Effect of Polymer/solvent Interactions on the Dynamic Viscoelasticity and the Oscillatory Flow Birefringence Properties for Polyisoprene Solutions written by Paul Andrew Merchak and published by . This book was released on 1987 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Self-diffusion and Viscoelastic Properties in Concentrated Polymer Solutions by : Hui Tao
Download or read book Self-diffusion and Viscoelastic Properties in Concentrated Polymer Solutions written by Hui Tao and published by . This book was released on 1998 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Influence of Polymer/solvent Interactions on the Viscoelastic and Oscillatory Flow Birefringence Properties of Polystyrene and Polyisoprene Solutions by : Theodore M. Stokich
Download or read book The Influence of Polymer/solvent Interactions on the Viscoelastic and Oscillatory Flow Birefringence Properties of Polystyrene and Polyisoprene Solutions written by Theodore M. Stokich and published by . This book was released on 1988 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Excluded Volume Effects in Polymer Solutions by : Lothar Schäfer
Download or read book Excluded Volume Effects in Polymer Solutions written by Lothar Schäfer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: Schäfer gives a concise overview of the static equilibrium properties of polymer solutions. In the first part diagrammatic perturbation theory is derived from scratch. The second part illustrates the basic ideas of the renormalization group (RG). The crucial role of dilation invariance is stressed. The more efficient method of dimensional regularization and minimal subtractions is worked out in part three. The fourth part contains a unified evaluation of the theory to the one loop level. All the important experimental quantities are discussed in detail, and the results are compared extensively to experiment. Empirical methods of data analysis are critically discussed. The final (fifth) part is devoted to extensions of theory. The first three parts of this book may serve as the basis of a course. Parts four and five are hoped to be useful for detailed quantitative evaluations of experiments.
