Zhao, W. ; Zhao, X. ; Sokolov, J. ; Rafailovich, M. H. ; Sanyal, M. K. ; Sinha, S. K. ; Cao, B. H. ; Kim, M. W. ; Sauer, B. B. (1992) Diffuse X-ray scattering study of toluene and polybromostyrene PBrS/toluene solutions The Journal of Chemical Physics, 97 (11). pp. 8636-8542. ISSN 0021-9606
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Official URL: http://jcp.aip.org/resource/1/jcpsa6/v97/i11/p8536...
Related URL: http://dx.doi.org/10.1063/1.463371
Abstract
We report measurements and calculations of X-ray diffuse scattering from the liquid-vapor Interface of toluene and polybromostyrene(PBrS)/toluene solutions for polymer molecular weights 90 K and 1 M at concentrations up to 11.7 volume %, well into the entangled semidilute regime. We have calculated the static structure factor S(k) and equal time height-height correlation function C(R) for surface hydrodynamic modes based on a coupled two-fluid model where the polymer response is taken to be that of a Maxwell viscoelastic material [Harden et al, J. Chern. Phys. 94, 5208 (1991)]. We obtain the leading correction term to the capillary-wave result for C(R) dependent On the solution shear modulus E0, as well as an analytic approximation valid for large E0, including the case of pure polymer melt.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Institute of Physics. |
Keywords: | Viscoelasticity; X-ray Diffraction; Toluene; Polystyrene; Organic Bromine Compounds; Solutions; Interfaces; Liquids; Vapors; Molecular Weight; Dilution; Structure Factors; Correlation Functions; Hydrodynamics; Oscillation Modes |
ID Code: | 83164 |
Deposited On: | 17 Feb 2012 04:22 |
Last Modified: | 19 May 2016 00:06 |
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