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Wrinkle structures formed by formulating {UV}-crosslinkable liquid prepolymers




Artificial wrinkles have recently been in the spotlight due to their potential use in high-tech applications. A spontaneously wrinkled film can be fabricated from UV-crosslinkable liquid prepolymers. Here, we controlled the wrinkle formation by simply formulating two UV-crosslinkable liquid prepolymers, tetraethylene glycol bis(4-ethenyl-2,3,5,6-tetrafluorophenyl) ether (TEGDSt) and tetraethylene glycol diacrylate (TEGDA). The wrinkles were formed from the TEGDSt/TEGDA formulated prepolymer layers containing up to 30 wt% of TEGDA. The wrinkle formation depended upon the rate of photo-crosslinking reaction of the formulated prepolymers. The first order apparent rate constant, kapp, was between ca. 5.7 × 10−3 and 12.2 × 10−3 s−1 for the wrinkle formation. The wrinkle structures were modulated within the kapp mainly due to variation in the extent of shrinkage of the formulated prepolymer layers with the content of TEGDA

Author(s): Seung Koo Park and Young-Je Kwark and Saekwang Nam and Suntak Park and Bongje Park and Sungryul Yun and Jaehyun Moon and Jeong-Ik Lee and Byounggon Yu and Ki-Uk Kyung
Journal: Polymer
Volume: 99
Pages: 447--452
Year: 2016
Month: September
Day: 2

Department(s): Haptic Intelligence
Bibtex Type: Article (article)
Paper Type: Journal

Digital: True
DOI: 10.1016/j.polymer.2016.07.031
State: Published
URL: http://www.sciencedirect.com/science/article/pii/S0032386116305985


  title = {Wrinkle structures formed by formulating {UV}-crosslinkable liquid prepolymers},
  author = {Park, Seung Koo and Kwark, Young-Je and Nam, Saekwang and Park, Suntak and Park, Bongje and Yun, Sungryul and Moon, Jaehyun and Lee, Jeong-Ik and Yu, Byounggon and Kyung, Ki-Uk},
  journal = {Polymer},
  volume = {99},
  pages = {447--452},
  month = sep,
  year = {2016},
  url = {http://www.sciencedirect.com/science/article/pii/S0032386116305985},
  month_numeric = {9}