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A variation in wrinkle structures of {UV}-cured films with chemical structures of prepolymers




Spontaneously wrinkled films can be easily obtained from UV-crosslinkable liquid prepolymers under special UV-curing conditions. They vary wrinkle structures of the UV-cured films and, however, cannot be precisely controlled. Here, five different UV-crosslinkable prepolymers are synthesized to study the chemical structure effect of prepolymers on wrinkle formation and modulation of the UV-cured films irrespective of the UV-curing conditions. Both wavelength and amplitude of the wrinkles are tuned with the different liquid prepolymers from 4.10 to 5.63µm and from 1.00 to 1.66µm, respectively. The wrinkle structures of the UV-cured films are faded by adding a solid prepolymer to a liquid prepolymer due to interference from it in the shrinkage of the liquid prepolymer layer. The wrinkles completely disappear in the UV-cured films fabricated from the formulated prepolymers containing over 50wt% of the solid prepolymer.

Author(s): Seung Koo Park and Young-Je Kwark and Saekwang Nam and Jaehyun Moon and Dong Wook Kim and Suntak Park and Bongje Park and Sungryul Yun and Jeong-Ik Lee and Byounggon Yu and Ki-Uk Kyung
Journal: Materials Letters
Volume: 199
Pages: 105--109
Year: 2017
Month: July
Day: 15

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

Digital: True
DOI: 10.1016/j.matlet.2017.04.063
State: Published
Supplement: https://www.sciencedirect.com/science/article/pii/S0167577X17306092#m0005
URL: http://www.sciencedirect.com/science/article/pii/S0167577X17306092


  title = {A variation in wrinkle structures of {UV}-cured films with chemical structures of prepolymers},
  author = {Park, Seung Koo and Kwark, Young-Je and Nam, Saekwang and Moon, Jaehyun and Kim, Dong Wook and Park, Suntak and Park, Bongje and Yun, Sungryul and Lee, Jeong-Ik and Yu, Byounggon and Kyung, Ki-Uk},
  journal = {Materials Letters},
  volume = {199},
  pages = {105--109},
  month = jul,
  year = {2017},
  url = {http://www.sciencedirect.com/science/article/pii/S0167577X17306092},
  month_numeric = {7}