TY - JOUR
T1 - Molecular aggregation states and wetting behavior of a poly{2-(perfluorooctyl)ethyl acrylate} brush-immobilized nano-imprinted surface
AU - Shinohara, Takamichi
AU - Higaki, Yuji
AU - Nojima, Shiki
AU - Masunaga, Hiroyasu
AU - Ogawa, Hiroki
AU - Okamoto, Yasushi
AU - Aoki, Takashi
AU - Takahara, Atsushi
N1 - Funding Information:
This work was supported by Photon and Quantum Basic Research Coordinated Development Program from the Ministry of Education, Culture, Sports, Science and Technology, Japan. The grazing incidence X-ray diffraction was performed at BL03XU and BL13XU in SPring-8 with the approval of Japan Synchrotron Radiation Institute (JASRI) (Proposal No. 2012A1298, 2012B1219, 2012A7213 and 2012B7263). The synchrotron radiation energy resolve XPS experiments were performed at BL12 at SAGA-LS with the proposal of No. 1303014S. We appreciate Dr. Setoyama for support on XPS measurements. We thank ULVAC-PHI Inc. and Dr. Miyayama for measuring the Ar GCIB XPS. T.S. acknowledges the financial support of a Grant-in-Aid for JSPS Fellows.
Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.
PY - 2015
Y1 - 2015
N2 - Topologically ordered surfaces with a polymer brush-grafted layer were prepared by a combination of nano-imprinting (NI) and surface-initiated atom transfer radical polymerization (SI-ATRP). The molecular aggregation state and the wetting were evaluated by synchrotron radiation X-ray analyses and water droplet contact angle measurements, respectively. An ordered topography was fabricated onto a spin coated thin film of a polymethacrylate-based copolymer with polymerization initiating sites [P(MMA-co-BIEM)] by NI. Then poly{2-(perfluorooctyl)ethyl acrylate} (PFA-C8) chains were grafted onto the thin film by SI-ATRP. The surface geometry was maintained after PFA-C8 grafting when the thickness of the grafted polymer layer was sufficiently thin to a scale of the concave region. The modified P(MMA-co-BIEM) thin film surface was water repellent by a synergetic effect of the surface geometry and the low surface free energy of the grafted PFA-C8 layer.
AB - Topologically ordered surfaces with a polymer brush-grafted layer were prepared by a combination of nano-imprinting (NI) and surface-initiated atom transfer radical polymerization (SI-ATRP). The molecular aggregation state and the wetting were evaluated by synchrotron radiation X-ray analyses and water droplet contact angle measurements, respectively. An ordered topography was fabricated onto a spin coated thin film of a polymethacrylate-based copolymer with polymerization initiating sites [P(MMA-co-BIEM)] by NI. Then poly{2-(perfluorooctyl)ethyl acrylate} (PFA-C8) chains were grafted onto the thin film by SI-ATRP. The surface geometry was maintained after PFA-C8 grafting when the thickness of the grafted polymer layer was sufficiently thin to a scale of the concave region. The modified P(MMA-co-BIEM) thin film surface was water repellent by a synergetic effect of the surface geometry and the low surface free energy of the grafted PFA-C8 layer.
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U2 - 10.1016/j.polymer.2015.05.042
DO - 10.1016/j.polymer.2015.05.042
M3 - Article
AN - SCOPUS:84983123464
SN - 0032-3861
VL - 69
SP - 10
EP - 16
JO - polymer
JF - polymer
ER -