Optical Autocatalysis Establishes Novel Spatial Dynamics in Phase Separation of Polymer Blends during Photocuring

Saeid Biria, Phillip P A Malley, Tara F Kahan, Ian Dean Hosein

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

We report a fundamentally new nonlinear dynamic system that couples optical autocatalytic behavior to phase evolution in photoreactive binary polymer blends. Upon exposure to light, the blend undergoes spontaneous patterning into a dense arrangement of microscale polymer filaments. The filaments' growth in turn induces local spinodal decomposition of the blend along their length, thereby regulating the spatially dynamics of phase separation. This leads to the spontaneous organization of a large-scale binary phase morphology dictated by the filament arrangement. This is a new mechanism for polymer blend organization, which couples nonlinear optical dynamics to chemical phase separation dynamics, and offers a new approach to light-directed patterning and organization of polymer and hybrid blends.

Original languageEnglish (US)
Pages (from-to)1237-1241
Number of pages5
JournalACS Macro Letters
Volume5
Issue number11
DOIs
StatePublished - Nov 15 2016

ASJC Scopus subject areas

  • Polymers and Plastics
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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