Dynamical response of a single star polymer chain

Marcelo Carignano, J. L. Alessandrini

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The initial decay rate Ω(k(combining right arrow above sign)) of the dynamical scattering factor of a single regular star polymer is investigated with the chain conformational renormalization group method up to first order in ε. The reduced relaxation rate Ω(k(combining right arrow above sign))/k3 is expressed as the ratio of the mobility to the static structure factor, and we have analyzed the two contributions separately. At the Gaussian fixed point we have found a qualitatively different result to that of the standard calculation in three dimensions, and the difference comes from the effect of the ε-expansion on the mobility. The renormalization group result at the self-avoiding fixed point describes qualitatively well the behavior of Ω(k(combining right arrow above sign))/k3 observed in neutron scattering experiments for 12-arm stars in a good solvent.

Original languageEnglish
Pages (from-to)3444-3449
Number of pages6
JournalMacromolecules
Volume28
Issue number9
Publication statusPublished - 1 Dec 1995
Externally publishedYes

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Stars
Polymers
Neutron scattering
Scattering
Experiments

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

Carignano, M., & Alessandrini, J. L. (1995). Dynamical response of a single star polymer chain. Macromolecules, 28(9), 3444-3449.

Dynamical response of a single star polymer chain. / Carignano, Marcelo; Alessandrini, J. L.

In: Macromolecules, Vol. 28, No. 9, 01.12.1995, p. 3444-3449.

Research output: Contribution to journalArticle

Carignano, M & Alessandrini, JL 1995, 'Dynamical response of a single star polymer chain', Macromolecules, vol. 28, no. 9, pp. 3444-3449.
Carignano M, Alessandrini JL. Dynamical response of a single star polymer chain. Macromolecules. 1995 Dec 1;28(9):3444-3449.
Carignano, Marcelo ; Alessandrini, J. L. / Dynamical response of a single star polymer chain. In: Macromolecules. 1995 ; Vol. 28, No. 9. pp. 3444-3449.
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