Dewetting of Thin Polymer Films on Wrinkled Graphene Oxide Monolayers

Kyoung Il Jo, Tae Ho Kim, Ki In Choi, Hoyeon Lee, Jae Hak Choi, Joona Bang, Tae Hwan Kim, Guangcui Yuan, Sushil K. Satija, Jaseung Koo

Research output: Contribution to journalArticle

Abstract

We investigated the effect of the morphological structure of a graphene oxide (GO) monolayer on the dewetting dynamics of the upper polymer thin films. The Langmuir-Schaefer (LS) technique was used to prepare a wrinkled GO (wrGO) structure with a root mean square (rms) roughness of 22.7 Å. The dewetting behavior of poly(methyl methacrylate) (PMMA) thin films on the wrGO monolayers was perfectly prevented, whereas the PMMA thin films on a flat GO monolayer were dewetted at 203 °C. This wrinkle effect of the GO can be also obtained when the GOs monolayers are intercalated to the PMMA/polystyrene (PS) interface. In this multilayer, the flat GO monolayer at the interface between the PS and PMMA layers was spontaneously roughened with rms roughness of 46.9 Å after annealing and also prohibited the dewetting behavior. From the results, we found that to improve the compatibility of polymer blends by adding the two-dimensional nanosheets, it is important to control the morphological structure of the sheets at the interface, along with manipulation of the GO-polymer interactions.

Original languageEnglish
JournalLangmuir
DOIs
Publication statusPublished - 2019 Jan 1

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Graphite
Polymer films
Oxides
Graphene
drying
Monolayers
graphene
Polymers
Polymethyl Methacrylate
Polymethyl methacrylates
polymethyl methacrylate
Thin films
oxides
polymers
Polystyrenes
polystyrene
roughness
thin films
Surface roughness
Nanosheets

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

Cite this

Dewetting of Thin Polymer Films on Wrinkled Graphene Oxide Monolayers. / Jo, Kyoung Il; Kim, Tae Ho; Choi, Ki In; Lee, Hoyeon; Choi, Jae Hak; Bang, Joona; Kim, Tae Hwan; Yuan, Guangcui; Satija, Sushil K.; Koo, Jaseung.

In: Langmuir, 01.01.2019.

Research output: Contribution to journalArticle

Jo, KI, Kim, TH, Choi, KI, Lee, H, Choi, JH, Bang, J, Kim, TH, Yuan, G, Satija, SK & Koo, J 2019, 'Dewetting of Thin Polymer Films on Wrinkled Graphene Oxide Monolayers', Langmuir. https://doi.org/10.1021/acs.langmuir.9b00141
Jo, Kyoung Il ; Kim, Tae Ho ; Choi, Ki In ; Lee, Hoyeon ; Choi, Jae Hak ; Bang, Joona ; Kim, Tae Hwan ; Yuan, Guangcui ; Satija, Sushil K. ; Koo, Jaseung. / Dewetting of Thin Polymer Films on Wrinkled Graphene Oxide Monolayers. In: Langmuir. 2019.
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