Photothermal Nanoparticle Initiation Enables Radical Polymerization and Yields Unique, Uniform Microfibers with Broad Spectrum Light

Rachel Steinhardt, Timothy Mc Cormick Steeves, Brooke Marjorie Wallace, Brittany Moser, Dmitry A. Fishman, Aaron P. Esser-Kahn

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

Photothermal processes are utilized across a variety of fields, from separations to medicine, and are an area of active research. Herein, the action of a solar simulator upon carbon black nanoparticles is shown to result in photothermally initiated chain-growth polymerization of methyl acrylate, butyl acrylate, and methyl methacrylate initiated by benzoyl peroxide. With use of methyl acrylate as the model system, products from this reaction are shown to be apparently indistinguishable on the molecular level, but result in unique microstructures relative to the thermal controls. The relative contribution of bands of the UV/visible spectrum to the polymerization initiation show that red/infrared wavelengths are most important for the initiation to occur. Kinetic analysis of the initiator homolysis indicate that the apparent reaction rate is accelerated in the photothermal condition.

Original languageEnglish (US)
Pages (from-to)39034-39039
Number of pages6
JournalACS Applied Materials and Interfaces
Volume9
Issue number44
DOIs
StatePublished - Nov 8 2017
Externally publishedYes

Keywords

  • carbon black
  • nanoparticles
  • photothermal heating
  • polymers
  • radical polymerization

ASJC Scopus subject areas

  • Materials Science(all)

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