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학술지 A Variation in Wrinkle Structures of UV-Cured Films with Chemical Structures of Prepolymers
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저자
박승구, 곽영제, 남세광, 문제현, 김동욱, 박선택, 박봉제, 윤성률, 이정익, 유병곤, 경기욱
발행일
201707
출처
Materials Letters, v.199, pp.105-109
ISSN
0167-577X
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.matlet.2017.04.063
협약과제
17ZS1100, 투명소자 및 UX 기술 연구, 경기욱
초록
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 5.63 쨉m and from 1.00 to 1.66 쨉m, 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 50 wt% of the solid prepolymer.
키워드
Chemical structures, Layer shrinkage, Prepolymers, UV-cured films, Wrinkle variations
KSP 제안 키워드
Curing conditions, Layer shrinkage, Structure effect, UV curing, UV-cured films, Wrinkle structure, Wrinkle variations, chemical structure