Thermoreversible gelation in poly(ethylene oxide)/carbon black hybrid melts

Antonios Kelarakis; Marta J. Krysmann; Emmanuel P. Giannelis

doi:10.1016/j.polymer.2014.10.023

Thermoreversible gelation in poly(ethylene oxide)/carbon black hybrid melts

Antonios Kelarakis, Marta J. Krysmann, Emmanuel P. Giannelis

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

7 Scopus citations

Abstract

The study focuses on the structure and viscoelasticity of poly(ethylene oxide)/carbon black fluids. The hybrids when subjected to extreme thermal annealing (at temperatures far above the melting point of the matrix) exhibit a 3-4 orders of magnitude increase in viscosity. Surprisingly, the effect is reversible and the viscosity reverts back to its initial value upon subsequent cooling. This rather unique sol-gel transition in terms of strength, steepness and thermal reversibility points to major structural rearrangements via extensive particle clustering, in agreement with microscopy observations. In related systems it was found that when matrix-particle electrostatic interactions are present the gelation is essentially diminished.

Original language	English (US)
Pages (from-to)	6278-6281
Number of pages	4
Journal	POLYMER
Volume	55
Issue number	24
DOIs	https://doi.org/10.1016/j.polymer.2014.10.023
State	Published - 2014
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2021-10-08
Acknowledged KAUST grant number(s): KUS-C1-018-02
Acknowledgements: This material is partially based on work supported as part of the Energy Materials Center at Cornell, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number DE-SC0001086. This publication is based on work supported in part by Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST).
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

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10.1016/j.polymer.2014.10.023

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title = "Thermoreversible gelation in poly(ethylene oxide)/carbon black hybrid melts",

abstract = "The study focuses on the structure and viscoelasticity of poly(ethylene oxide)/carbon black fluids. The hybrids when subjected to extreme thermal annealing (at temperatures far above the melting point of the matrix) exhibit a 3-4 orders of magnitude increase in viscosity. Surprisingly, the effect is reversible and the viscosity reverts back to its initial value upon subsequent cooling. This rather unique sol-gel transition in terms of strength, steepness and thermal reversibility points to major structural rearrangements via extensive particle clustering, in agreement with microscopy observations. In related systems it was found that when matrix-particle electrostatic interactions are present the gelation is essentially diminished.",

author = "Antonios Kelarakis and Krysmann, {Marta J.} and Giannelis, {Emmanuel P.}",

note = "KAUST Repository Item: Exported on 2021-10-08 Acknowledged KAUST grant number(s): KUS-C1-018-02 Acknowledgements: This material is partially based on work supported as part of the Energy Materials Center at Cornell, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number DE-SC0001086. This publication is based on work supported in part by Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST). This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

year = "2014",

doi = "10.1016/j.polymer.2014.10.023",

language = "English (US)",

volume = "55",

pages = "6278--6281",

journal = "POLYMER",

issn = "1873-2291",

publisher = "Elsevier",

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T1 - Thermoreversible gelation in poly(ethylene oxide)/carbon black hybrid melts

AU - Kelarakis, Antonios

AU - Krysmann, Marta J.

AU - Giannelis, Emmanuel P.

N1 - KAUST Repository Item: Exported on 2021-10-08 Acknowledged KAUST grant number(s): KUS-C1-018-02 Acknowledgements: This material is partially based on work supported as part of the Energy Materials Center at Cornell, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award Number DE-SC0001086. This publication is based on work supported in part by Award No. KUS-C1-018-02, made by King Abdullah University of Science and Technology (KAUST). This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2014

Y1 - 2014

N2 - The study focuses on the structure and viscoelasticity of poly(ethylene oxide)/carbon black fluids. The hybrids when subjected to extreme thermal annealing (at temperatures far above the melting point of the matrix) exhibit a 3-4 orders of magnitude increase in viscosity. Surprisingly, the effect is reversible and the viscosity reverts back to its initial value upon subsequent cooling. This rather unique sol-gel transition in terms of strength, steepness and thermal reversibility points to major structural rearrangements via extensive particle clustering, in agreement with microscopy observations. In related systems it was found that when matrix-particle electrostatic interactions are present the gelation is essentially diminished.

AB - The study focuses on the structure and viscoelasticity of poly(ethylene oxide)/carbon black fluids. The hybrids when subjected to extreme thermal annealing (at temperatures far above the melting point of the matrix) exhibit a 3-4 orders of magnitude increase in viscosity. Surprisingly, the effect is reversible and the viscosity reverts back to its initial value upon subsequent cooling. This rather unique sol-gel transition in terms of strength, steepness and thermal reversibility points to major structural rearrangements via extensive particle clustering, in agreement with microscopy observations. In related systems it was found that when matrix-particle electrostatic interactions are present the gelation is essentially diminished.

UR - http://hdl.handle.net/10754/672259

UR - https://linkinghub.elsevier.com/retrieve/pii/S0032386114009215

UR - http://www.scopus.com/inward/record.url?scp=84908681911&partnerID=8YFLogxK

U2 - 10.1016/j.polymer.2014.10.023

DO - 10.1016/j.polymer.2014.10.023

M3 - Article

SN - 1873-2291

VL - 55

SP - 6278

EP - 6281

JO - POLYMER

JF - POLYMER

IS - 24

ER -

Thermoreversible gelation in poly(ethylene oxide)/carbon black hybrid melts

Abstract

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