Substrate interaction effects on order to disorder transition behavior in block copolymer films
作者： Hyungju Ahn , Yonghoon Lee , Hoyeon Lee , Yoonkeun Kim , Du Yeol Ryu
DOI: 10.1002/POLB.23266
关键词: Small-angle X-ray scattering 、 Phase transition 、 Substrate Interaction 、 Materials science 、 Flory–Huggins solution theory 、 Block (periodic table) 、 Polymer chemistry 、 Chemical physics 、 Critical thickness 、 Copolymer 、 Thin film
摘要: We present an overview of the recent progress on phase transition in block copolymer (BCP) films terms interfacial interactions effects substrates and χ (Flory-Huggins segmental interaction parameter) between two blocks. For BCP thinner than a critical thickness (Lc) above which is independent film thickness, order-to-disorder (ODT) increased or decreased with decreasing depending types. The rapid slow changes ODT were attributed to relative magnitude enthalpic contribution Interestingly, periodic amplification composition for suppressed compositional fluctuation geometry, resulting shifts from bulk ODTs Lc. This effect was more illustrated by shift strength preferential substrates. © 2013 Wiley Periodicals, Inc. J Polym Sci Part B: Phys,
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