TITLE

Fluctuations effects in diblock copolymer fluids: Comparison of theories and experiment

AUTHOR(S)
Guenza, Marina; Schweizer, Kenneth S.
PUB. DATE
May 1997
SOURCE
Journal of Chemical Physics;5/1/1997, Vol. 106 Issue 17, p7391
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Reports on fluctuation effects in diblock copolymer fluids. Analytic Polymer Reference Interaction Site Model (PRISM) theory of structurally and interaction symmetric Gaussian diblock copolymer fluids; Estimated location of the order-disorder transition; Numerical applications of PRISM theory.
ACCESSION #
4298975

 

Related Articles

  • Short-range fluctuations in the Hartree theory of diblock copolymer melts. Kudlay, Alexander; Stepanow, Semjon // Journal of Chemical Physics;3/1/2003, Vol. 118 Issue 9, p4272 

    We attempt to develop a fluctuation theory of diblock copolymer melts, which would include short-range fluctuations. The one-loop correction has been found to have an ultraviolet divergence, which is shown to be architecture-dependent. The correlation function S(q) is obtained within the Hartree...

  • Theoretical study of polymeric mixtures with different sequence statistics. II. Brazovskii class: Linear random copolymers with diblock copolymers. Qi, Shuyan; Shuyan Qi; Chakraborty, Arup K. // Journal of Chemical Physics;1/15/2000, Vol. 112 Issue 3 

    We use a Landau theory to study the instability of the homogeneous state of a mixture of linear random copolymers and diblock copolymers. Interesting features of the calculated structure factors for different components of the mixture are found, which can be directly compared with scattering...

  • Collective and single-chain correlations near the block copolymer order–disorder transition. Barrat, Jean-Louis; Fredrickson, Glenn H. // Journal of Chemical Physics;7/15/1991, Vol. 95 Issue 2, p1281 

    The concentration pair correlation function and the order–disorder transition in a diblock copolymer melt are studied in the framework of a self-consistent one-loop approximation. In contrast with earlier work, no simplifying assumption on the wave vector dependence of the correlation...

  • Fluctuation effects in the theory of microphase separation in block copolymers. Fredrickson, Glenn H.; Helfand, Eugene // Journal of Chemical Physics;7/1/1987, Vol. 87 Issue 1, p697 

    The effect of composition fluctuations on the microphase separation transition in diblock copolymers is investigated. Such fluctuation corrections, which were neglected in the mean field treatment of Leibler, are found to be significant for the molecular weights usually encountered. The analysis...

  • Viscoelasticity of lyotropic smectics. Lu, C.-Y. D.; Cates, M. E. // Journal of Chemical Physics;9/15/1994, Vol. 101 Issue 6, p5219 

    We study theoretically the contribution of thermal fluctuations to the linear rheological spectrum of lyotropic smectic A phases at low frequencies. The fluctuations are treated at the Gaussian level; their hydrodynamics is controlled by the undulation/baroclinic mode. In the layer-over-layer...

  • Effect of dynamical asymmetry on the viscosity of a random copolymer melt. Kumaran, V. // Journal of Chemical Physics;2/22/1996, Vol. 104 Issue 8, p3120 

    The variation of the viscosity as a function of the sequence distribution in an A–B random copolymer melt is determined. The parameters that characterize the random copolymer are the fraction of A monomers f, the parameter λ which determines the correlation in the monomer identities...

  • Residual dipolar coupling for the assessment of cross-link density changes in γ-irradiated silica-PDMS composite materials. Maxwell, Robert S.; Balazs, Bryan // Journal of Chemical Physics;6/15/2002, Vol. 116 Issue 23, p10492 

    We have measured changes in transverse relaxation times (T[sub 2e]), residual dipolar couplings (...δΩ[sub d]²...), and the mean-squared fluctuations in the residual dipolar couplings (...δΩ[sub d]²...), associated with cross-link density changes in a complex silica-filled...

  • Effect of composition fluctuations on tracer diffusion in symmetric diblock copolymers. Kannan, Rangaramanujam M.; Jie Su // Journal of Chemical Physics;3/15/1998, Vol. 108 Issue 11, p4634 

    Investigates the effect of composition fluctuations on tracer diffusion in symmetric diblock copolymers. Use of Rayleigh scattering measurements; Suppression of diffusion due to fluctuations; Attribution of tracer molecular variations to differential chain localization.

  • A field theory of random heteropolymers near solid surfaces: Analysis of interfacial organization and adsorption–desorption phase diagram. Gutman, Lorin; Chakraborty, Arup K. // Journal of Chemical Physics;12/22/1995, Vol. 103 Issue 24, p10733 

    Understanding the interfacial organization of heteropolymers near solid surfaces is an issue of fundamental interest that is relevant for many technological and biological applications. In this paper we address several questions pertaining to the surface-induced ordering and the...

Share

Read the Article

Courtesy of NEW JERSEY STATE LIBRARY

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics