A scattering function of star polymers including excluded volume effects

Xin Li, Changwoo Do, Yun Liu, Luis Sánchez-Diáz, Gregory Smith, Wei Ren Chen

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

This work presents a new model for the form factor of a star polymer consisting of self-avoiding branches. This new model incorporates excluded volume effects and is derived from the two-point correlation function for a star polymer. This model is compared with small-angle neutron scattering measurements from polystyrene stars immersed in a good solvent, tetrahydrofuran. It is shown that this model provides a good description of the scattering signature originating from the excluded volume effect, and it explicitly elucidates the connection between the global conformation of a star polymer and the local stiffness of its constituent branch.

Original languageEnglish
Pages (from-to)1901-1905
Number of pages5
JournalJournal of Applied Crystallography
Volume47
Issue number6
DOIs
StatePublished - Dec 1 2014

Keywords

  • excluded volume effects
  • scattering functions
  • star polymers

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