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

doi:10.1021/acs.langmuir.9b00141

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

Department of Chemical and Biological Engineering

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

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 language	English
Pages (from-to)	5549-5556
Number of pages	8
Journal	Langmuir
Volume	35
Issue number	16
DOIs	https://doi.org/10.1021/acs.langmuir.9b00141
Publication status	Published - 2019 Apr 23

ASJC Scopus subject areas

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

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10.1021/acs.langmuir.9b00141

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@article{3af7cc61fc3d41798f4495beb2c3b9f9,

title = "Dewetting of Thin Polymer Films on Wrinkled Graphene Oxide Monolayers",

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 {\AA}. 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 {\AA} 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.",

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

note = "Funding Information: The authors are grateful for the deep cooperation of the Korea Atomic Energy Research Institute for their offers of a better experimental environment. This work was supported by a grant from the research fund of Chungnam National University and the National Research Foundation of Korea under Contract 2017M2A2A6A01019911. The identification of commercial products does not imply endorsement by the National Institute of Standards and Technology nor does it imply that these are the best for the purpose. Publisher Copyright: {\textcopyright} 2019 American Chemical Society.",

year = "2019",

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doi = "10.1021/acs.langmuir.9b00141",

language = "English",

volume = "35",

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T1 - Dewetting of Thin Polymer Films on Wrinkled Graphene Oxide Monolayers

AU - Jo, Kyoung Il

AU - Kim, Tae Ho

AU - Choi, Ki In

AU - Lee, Hoyeon

AU - Choi, Jae Hak

AU - Bang, Joona

AU - Kim, Tae Hwan

AU - Yuan, Guangcui

AU - Satija, Sushil K.

AU - Koo, Jaseung

N1 - Funding Information: The authors are grateful for the deep cooperation of the Korea Atomic Energy Research Institute for their offers of a better experimental environment. This work was supported by a grant from the research fund of Chungnam National University and the National Research Foundation of Korea under Contract 2017M2A2A6A01019911. The identification of commercial products does not imply endorsement by the National Institute of Standards and Technology nor does it imply that these are the best for the purpose. Publisher Copyright: © 2019 American Chemical Society.

PY - 2019/4/23

Y1 - 2019/4/23

N2 - 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.

AB - 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.

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DO - 10.1021/acs.langmuir.9b00141

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AN - SCOPUS:85065046846

SN - 0743-7463

VL - 35

SP - 5549

EP - 5556

JO - Langmuir

JF - Langmuir

IS - 16

ER -

Dewetting of Thin Polymer Films on Wrinkled Graphene Oxide Monolayers

Abstract

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