Journal
POLYMER
Volume 52, Issue 22, Pages 5102-5106Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2011.08.054
Keywords
Breath figure; Porous film; Cross-linked polymers
Categories
Funding
- National Science Foundation [EFRI-1038305]
- Directorate For Engineering
- Emerging Frontiers & Multidisciplinary Activities [1038305] Funding Source: National Science Foundation
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This work demonstrates a new strategy of producing honeycomb-like porous structures in cross-linked polymer films via a simple one-step synthesis/fabrication process. This is based on the breath figure formation during the in situ cross-linking of reactive monomer solutions. A chloroform solution, containing tert-butyl acrylate monomer and tetraethylene glycol dimethacrylate cross-linker, was crosslinked upon UV radiation under a moist and nitrogen saturated chamber. Micron-sized pores with reasonable uniformity were obtained in the cross-linked polymer films. The size, shape, uniformity and ordering of the pores show significant dependences on the processing conditions. Using this method, porous structures were also achieved in a commercially available photo-active resin, NOA 65, illustrating the generality of this approach. (C) 2011 Elsevier Ltd. All rights reserved.
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