Jump to main content
Jump to site search

Issue 3, 2018
Previous Article Next Article

Rapid and controlled photo-induced thiol–ene wrinkle formation via flowcoating

Author affiliations

Abstract

Spatially controlled wrinkle formation on an elastomeric substrate is achieved through flowcoating of a nanometer thick, high modulus thiol–ene film laminated on a millimeter-thick thiol–ene elastomer. The elastomer substrate is formed via photopolymerization of thiol and ene monomers with a slight stoichiometric excess of thiol to yield a 2.3 MPa elastomer. Separately, thiol and ene monomers, with a higher degree of functionality, are flow coated onto a glass slide and photopolymerized under ambient conditions to yield a 1.9 GPa film tens of nanometers thick. The photocrosslinked thin film is transferred onto the strained elastomer to spontaneously produce wrinkles upon strain release. Careful selection of thiol and ene monomers facilitate tuning of the film and elastomer mechanical properties, while stoichiometry control (i.e., excess thiols in the elastomer and excess enes in the film) allows covalent attachment of the film to the elastomer to prevent delamination upon elastomer destrain. Photopatterning of a flowcoated thin film is demonstrated, which, when wrinkled, generates a very distinct pattern of aligned wrinkle structures with clearly defined boundaries. Finally, by coating and photopatterning in sequence, spatial wrinkle wavelength control is readily attained by defining the film thickness at any given point.

Graphical abstract: Rapid and controlled photo-induced thiol–ene wrinkle formation via flowcoating

Back to tab navigation

Supplementary files

Publication details

The article was received on 26 Jan 2018, accepted on 14 Mar 2018 and first published on 14 Mar 2018


Article type: Communication
DOI: 10.1039/C8MH00118A
Citation: Mater. Horiz., 2018,5, 514-520
  •   Request permissions

    Rapid and controlled photo-induced thiol–ene wrinkle formation via flowcoating

    S. J. Ma, N. J. Wagner and C. J. Kloxin, Mater. Horiz., 2018, 5, 514
    DOI: 10.1039/C8MH00118A

Search articles by author

Spotlight

Advertisements