Visualization of two-dimensional single chain conformations solubilized in a miscible polymer blend monolayer by atomic force microscopy

The Journal of Physical Chemistry. B
Kouki Sugihara, Jiro Kumaki

Abstract

Polymer Langmuir monolayers spread on a water surface are one of the best models for two-dimensional (2D) polymer and have been extensively studied. However, the most fundamental issue in understanding a 2D film, the polymer chain packing in the film, is still not well-understood, especially from the experimental point of view. Direct observation of the chain packing by microscopy at a molecular level, such as by atomic force microscopy (AFM), might be one of the most promising ways to study this issue; however, because of the limited resolution of the method, the chain packing of polymer cannot be resolved by AFM, except for especially large polymers. Here, we show that a mixed monolayer of vinyl polymers, poly(methyl methacrylate) (PMMA) and poly(n-nonyl acrylate) (PNA), was miscible at a low surface pressure, and if a small amount of PMMA chains was solubilized in a PNA monolayer, the isolated PMMA chains in the PNA monolayer were, for the first time, successfully visualized by AFM with a clear contrast, which originated from a difference of rigidities of the polymers due to their different glass transition temperatures (105 °C(PMMA) and -89 °C(PNA)). The PMMA chains were found to strongly interpenetrate into the PNA monolay...Continue Reading

References

Apr 22, 1991·Physical Review Letters·D BeagleholeH K Christenson
Apr 17, 2003·Journal of the American Chemical Society·Jiro Kumaki, Takeji Hashimoto
Mar 10, 2004·The European Physical Journal. E, Soft Matter·A N Semenov, A Johner
Oct 16, 2004·The Journal of Chemical Physics·Xiaorong Wang, Victor J Foltz
Apr 21, 2005·Journal of the American Chemical Society·Jiro KumakiEiji Yashima
Jun 2, 2005·Journal of Colloid and Interface Science·Masami Kawaguchi, Mikage Suzuki
Jul 16, 2005·Journal of Colloid and Interface Science·Masaki OhkitaMasami Kawaguchi
Jan 18, 2006·Angewandte Chemie·Shin-Ichiro SakuraiEiji Yashima
Apr 28, 2006·Journal of the American Chemical Society·Shin-ichiro SakuraiEiji Yashima
Dec 14, 2007·Journal of the American Chemical Society·Hisanari OnouchiEiji Yashima
May 31, 2008·Journal of the American Chemical Society·Takeshi MaedaEiji Yashima
Mar 27, 2009·Chemical Society Reviews·Jiro KumakiEiji Yashima

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Citations

Sep 28, 2012·The European Physical Journal. E, Soft Matter·N SchulmannJ P Wittmer
Dec 17, 2014·The Journal of Physical Chemistry. B·Takahiro AnzaiJiro Kumaki
Feb 12, 2017·Journal of Molecular Modeling·Piotr PolanowskiAndrzej Sikorski
Apr 10, 2018·ACS Omega·Chisato ShimanukiJiro Kumaki
Nov 17, 2021·Soft Matter·Jinseong KimChunggi Baig

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