Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Comparing Microscale Behaviors of Block Copolymer with Polymer Blend Thin Films under Electric Fields

전기장 하에서의 블록 공중합체와 고분자 블렌드의 미세 구조 변화 거동 비교

  • Bae, Joonwon (Department of Applied Chemistry, Dongduk Women's University)
  • 배준원 (동덕여자대학교 응용화학과)
  • Received : 2018.02.14
  • Accepted : 2018.04.10
  • Published : 2018.08.10
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Abstract

In this work, profound microscale behaviors of block copolymer and polymer blend under electric field were investigated using microscopic methods and compared systematically. To this end, both the block copolymer and blend containing polyacrylonitrile (PAN) and poly(methyl methacrylate) (PMMA) were introduced. The two polymers have a similar dielectric constant. Under an identical experimental condition such as temperature, film thickness, field intensity, and exposure time, the polymer blend responded more sensitively than the block copolymer. The presence of covalent bond suppressed the mobility of constituents in block copolymer. This study will be essential for future research activities regarding behaviors of polymeric materials under external fields.

전기장 하에서 유기물은 전기장에 의해 부여된 여러 가지 힘의 영향을 받아서 특이한 거동을 나타낸다. 본 연구에서는, 지금까지 개별적으로 고찰되어 왔던 전기장 하에서의 블록 공중합체와 고분자 블렌드의 미세 거동을 비교 분석하여 특징적인 차이점을 알아보고자 한다. 두 가지 고분자가 공유결합으로 연결된 블록 공중합체와 약한 상호작용으로 혼합된 고분자 블렌드 시스템을 비교대상으로 하였다. 이때, 구성 고분자로는 비슷한 유전상수를 갖는 폴리아크릴로 나이트릴과 폴리메틸메타아크릴레이트를 도입하였다. 유사한 분자량, 같은 농도, 같은 전기장 세기하에서 고분자 블렌드가 전기장에 더욱 민감하게 반응하는 것을 알 수 있었다. 이는 공유결합이 분자의 운동성을 제약하여 전기장에 덜 민감하게 반응하도록 거동하기 때문이다. 본 연구는 고분자 물질의 전기장 하에서의 거동을 이해하는 중요한 정보를 제공할 것이다.

Keywords

References

  1. A. Vrij, Possible mechanism for the spontaneous rupture of thin, free liquid films, Discuss. Faraday Soc., 42, 23-33 (1966). https://doi.org/10.1039/df9664200023
  2. A. Sharma and E. Ruckenstein, Finite-amplitude instability of thin free and wetting films: Prediction of lifetimes, Langmuir, 2, 480-494 (1986). https://doi.org/10.1021/la00070a019
  3. I. Hamley, Nanostructure fabrication using block copolymers, Nanotechnology, 14, R39 (2003). https://doi.org/10.1088/0957-4484/14/10/201
  4. H. Xiang, Y. Lin, and T. P. Russell, Electrically induced patterning in block copolymer films, Macromolecules, 37, 5358-5363 (2004). https://doi.org/10.1021/ma049888s
  5. J. Bae, S. J. Park, O. S. Kwon, and J. Jang, A unique embossed carbon layer from induced domain alignment in a block copolymer thin film under an electric field, Chem. Commun., 49, 5456-5458 (2013). https://doi.org/10.1039/c3cc42159g
  6. J. Bae, E. Glogowski, S. Gupta, W. Chen, T. Emrick, and T. P. Russell, Effect of nanoparticles on the electrohydrodynamic instabilities of polymer/nanoparticle thin films, Macromolecules, 41, 2722-2726 (2008). https://doi.org/10.1021/ma702750y
  7. J. Bae, Electrohydrodynamic instabilities of polymer thin films: Filler effect, J. Ind. Eng. Chem., 18, 378-383 (2012). https://doi.org/10.1016/j.jiec.2011.11.049
  8. J. Bae and S. H. Cha, Effect of nanoparticle surface functionality on microdomain orientation in block copolymer thin films under electric field, Polymer, 55, 2014-2020 (2014). https://doi.org/10.1016/j.polymer.2014.02.054
  9. J. Bae, S. J. Park, O, S, Kwon, and J. Jang, The effect of nanoparticle on microdomain alignment in block copolymer thin films under an electric field, J. Mater. Sci., 49, 4323-4331 (2014). https://doi.org/10.1007/s10853-014-8128-0
  10. Q. Tong and S. J. Sibener, Electric-field-induced control and switching of block copolymer domain orientations in nanoconfined channel architectures, J. Phys. Chem. C, 118, 13752-13756 (2014). https://doi.org/10.1021/jp505677f
  11. M. W. Matsen, Electric field alignment in thin films of cylinder- forming diblock copolymer, Macromolecules, 39, 5512-5520 (2006). https://doi.org/10.1021/ma060456m
  12. K. A. Leach, S. Gupta, M. D. Dickey, C. G. Willson, and T. P. Russell, Electric field and dewetting induced hierarchical structure formation in polymer/polymer/air trilayers, Chaos, 15, 047506 (2005). https://doi.org/10.1063/1.2132248
  13. J. E. Mark, Physical Properties of Polymers Handbook, Springer, Cincinnati, OH, USA (2007).