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Saturday, July 18, 2020 | History

2 edition of study of the behavior of polydisperse polystyrene in binary solvent mixtures found in the catalog.

study of the behavior of polydisperse polystyrene in binary solvent mixtures

Robert M. Johnsen

study of the behavior of polydisperse polystyrene in binary solvent mixtures

by Robert M. Johnsen

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  • 7 Currently reading

Published by [Almqvist & Wiksell] in Uppsala .
Written in English

    Subjects:
  • Polystyrene.,
  • Solvents.

  • Edition Notes

    Statementby Robert M. Johnsen.
    SeriesAbstracts of Uppsala dissertations from the Faculty of Science,, 212, Acta Universitatis Upsaliensis, Acta Universitatis Upsaliensis., 212.
    Classifications
    LC ClassificationsQ64 .A63 no. 212, TP1180.S7 .A63 no. 212
    The Physical Object
    Pagination11 p.
    Number of Pages11
    ID Numbers
    Open LibraryOL5241350M
    LC Control Number75312745

    But two modes in the characteristic linewidth distribution appeared in a polydisperse PS/TOL binary solution with M w = 23 x 10 6, M w /M n ~ , which indicated that polydispersity could lead to the observed bimodal behavior in the characteristic linewidth distribution even at small scattering angles where KR g   The Perturbed-Chain SAFT equation-of-state is applied to binary and ternary mixtures of polymers, solvents and gases. Using a temperature-independent interaction parameter k ij for each binary system, the Perturbed-Chain SAFT equation-of-state gives good correlations of the appropriate phase behavior over wide ranges of conditions. Copolymers or polymers with short-chain branching can be

    It is believed that to improve the performance of both models, the polydisperse nature of vegetable oils should be taken into account. This topic is now under investigation within our working group. CONCLUSIONS. The phase behavior of soybean and olive oils were experimentally investigated in ?script=sci_arttext&pid=S   Furthermore, the binary HS phase diagram may provide a generally useful reference to anticipate and interpret the crystalline phases that emerge in polydisperse mixtures. A recent study of a polydisperse HS system with c V ≈ observed partial crystallization of the aluminum diboride (AlB 2) lattice with d L /d S ≈ 2, a value within the

      These RDP equations produced a good fit to the extensional rheology of polydisperse polystyrene melts in [21 Boudara, V., Supramolecular and entangled polymer materials: Rheological models, Ph.D. thesis, University of Leeds, Leeds, ], although overpredicted the modulus of the linear viscoelastic envelope. This may cause problems at low Wilson DJ, Hurtrez G, Riess G () Colloidal behavior and surface activity of block copolymers. In: Walsh DJ, Higgins JS, Maconnachie A (eds) Polymer blends and mixtures. NATO Advanced Science Institute Series. Mortinus Nijhoff, Dordrecht, The Netherlands, p Google Scholar


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Study of the behavior of polydisperse polystyrene in binary solvent mixtures by Robert M. Johnsen Download PDF EPUB FB2

A study of the behavior of polydisperse polystyrene in binary solvent mixtures Johnsen, Robert M. Uppsala University, Disciplinary Domain of Science and ?pid=diva Viscometric Behavior of Polystyrene in Binary Solutions Used as Eluents in Adsorption Chromatography same mixtures.

This study confirms the relationship raphy, Marcel Dekker, New York,p A systematic study of the global phase behavior of a colloidal system consisting of monodisperse, charge stabilized, polystyrene latex spheres (PLS) in a critical binary liquid mixtures at The initial stages of phase separation in low molecular weight mixtures of polystyrene (Mw = ) and polybutadiene (Mw = and ) have been examined by using time-resolved small-angle X   In the study by Schultz and McCullough on the crystallization and melting of poly(2,6-dimethyl-1,4-phenylene oxide) in ternary mixtures with polystyrene and toluene, experimental data were found to be consist with χ 23 = 0.

Phase Boundary. The determination of phase compositions in a solid polymer mixture poses a challenge to analytical :// We also study the more conventional case of length polydisperse chains in a poor solvent.

Comment: 21 pages, 3 figures,revised version Do you want to read the rest of this article. This study will address the problems just men- tioned in some detail, through comparing experi- ments and theory for the phase behavior of both semicrystalline poly-L-lactide (PLLA) and amor- phous poly-DL-lactide (PDLLA) in several solvent/ nonsolvent mixtures (from these polymers, mem- branes for biomedical purposes can be prepared6)   Density and Derived Properties of Binary Mixtures Containing {2-(Dimethylamino)ethyl Methacrylate + Alcohols} at Temperatures from T = ( to ) K and Pressures of up to 35 MPa.

Journal of Chemical & Engineering Data64 (5), DOI: /8b   Modeling the Phase Behavior of H2S + n-Alkane Binary Mixtures Using the SAFT-VR+D Approach. The Journal of Physical Chemistry B(31), DOI: /jpn. Hooman Haghighi, Antonin Chapoy and Bahman ://   In this paper, we study the self-assembly of this sample and its solution behavior in 1,4-dioxane–methanol mixtures and in low ionic strength aqueous media in detail.

We focus mainly (i) on reversible micellization in binary 1,4-dioxane–methanol mixtures and (ii) on frozen micelles in acidic water prepared via dialysis from binary solvent ~kfmch/kompmolsys/studenti/jana-humpolickova/pub/   E ect of polydispersity on the phase behavior of additive hard spheres in solution, part I Luka Sturtewagen and Erik van der Linden Laboratory of Physics and Physical Chemistry of   This work investigated the phase behavior of polymer/solvent mixtures aiming at identifying appropriate solvents and solvent mixtures of varying compositions that do not demix with a given polymer.

In addition, the influence of temperature and of polymer molecular weight on   Lamellar crystals of polydisperse poly (9,9-di-n-octyl-2,7-fluorene)s were obtained from dilute solution.

By means of scanning electron microscopy (SEM) and atomic force microscopy (AFM), we found that polymer chains formed lamellar single crystals through fractionated crystallization, in which components of the largest mass fraction crystallized first and remained extended in the first :// The polydisperse diblock copolymer of polystyrene-block-poly(4-vinyl pyridine) (PSVP) was prepared by the nitroxide-mediated radical polymerization that contains the fraction of poly(4-vinyl 일반논문[] Phase behavior of polystyrene-b-poly(n-butyl-ran-n-hexyl) methacrylate copolymers 일반논문[] Phase coherence upon heating in diblock copolymer films 일반논문[] Effect of Neutral Solvent on the Phase Behavior ?p_p_id=DeptInfo_WAR.

Effect of neutral solvent on the phase behavior of polystyrene-block-poly(n-butyl methacrylate) copolymers. Macromolecular Research15 (7), DOI: /BF Chaoxu Li, Eun Young Kim, Guang Hua Li, Dong Hyun Lee, Jin Kon Kim.

Effect of solvents on closed-loop phase behavior of block ://   The phase behavior and morphology of binary mixtures of a homogeneous polystyrene-block-polyisoprene (SI diblock) copolymer and a polyisoprene (hPI) were investigated using small-angle X-ray scattering (SAXS), light scattering, transmission electron microscopy (TEM), and oscillatory shear rheometry with an aim to elucidate homopolymer-induced microphase separation of a homogeneous Cowie JMG, McEwen IJ () Polymer co-solvent systems Phase-behavior of polystyrene in binary mixed-solvents of acetone with N-alkanes – examples of classic cosolvency.

Polymer 24(11)– CrossRef Google Scholar The use of highly elastic polymer solutions has been remarkably successful in elucidating the behavior of polymeric materials under flowing conditions.

Here, we present the results of an extensive experimental study into the shear behavior of an athermal, dilute, binary polymer solution that is believed to be free of many of these :// Rebelo, L.P.N. and Van Hook, W.A.() An unusual phase diagram: the polystyrene/acetone system in its hypercritical region; near tricritical behavior in a pseudo-binary solution, J.

Polym. Sci. B., 31, –8 CrossRef Google Scholar. 8 Phase_Diagram Module The Phase_Diagram module allows you to calculate and display thermodynamic properties such as free energy, chemical potential, and activity in binary, quasi-binary, ternary, quasi-ternary, and copolymer systems.

The module also computes liquid-liquid phase diagrams: the spinodal and binodal curves (replaced in quasi-binary and quasi-ternary cases by cloud-point and   Phase Equilibrium Calculations of Ternary Liquid Mixtures with Binary Interaction Parameters and Molecular Size Parameters Determined from Molecular Dynamics.

The Journal of Physical Chemistry B(27), Molecular dynamics simulations of free-standing thin films of neat melts of polyethylene (PE) chains up to CH and their binary mixtures with n-C13H28 are performed employing a united atom model.

We estimate the surface tension values of PE melts from the atomic virial tensor over a range of temperatures, which are in good agreement with experimental ://