Comprehensive investigation of the viscoelastic properties of PMMA by nanoindentation

Petra Christöfl; Caterina Marina Czibula; Michael Berer; Gernot Oreski; Christian Teichert; Gerald Pinter

doi:10.1016/j.polymertesting.2020.106978

Comprehensive investigation of the viscoelastic properties of PMMA by nanoindentation

Petra Christöfl^*, Caterina Marina Czibula, Michael Berer, Gernot Oreski, Christian Teichert , Gerald Pinter

^*Corresponding author for this work

Institute of Bioproducts and Paper Technology (6610)

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

Abstract

Instrumented nanoindentation (NI) was used to examine the viscoelastic properties of poly(methyl methacrylate) (PMMA) as an amorphous polymer model. An evaluation combining adhesive contact and empiric spring–dashpot models has been applied to obtain the instantaneous elastic modulus E ₀ and the infinitely elastic modulus E _∞ from nanoindentation creep curves. The value of E ₀ has been compared to moduli obtained with atomic force microscopy-based nanoindentation (AFM-NI) and compression tests. Furthermore, the elastic modulus has been evaluated by the method introduced by Oliver and Pharr (O&P) for the NI and AFM-NI results. Comparison of the elastic modulus E ₀ from the creep measurements of NI and AFM-NI to compression tests reveals good agreement of the results. However, only the O&P based AFM-NI results yield to lower values.

Original language	English
Article number	106978
Journal	Polymer Testing
Volume	93
DOIs	https://doi.org/10.1016/j.polymertesting.2020.106978
Publication status	Published - 2021

Keywords

AFM
Amorphous
Compression test
Creep
Nanoindentation

ASJC Scopus subject areas

Polymers and Plastics
Organic Chemistry

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10.1016/j.polymertesting.2020.106978Licence: CC BY-NC-ND 4.0

Cite this

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title = "Comprehensive investigation of the viscoelastic properties of PMMA by nanoindentation",

abstract = "Instrumented nanoindentation (NI) was used to examine the viscoelastic properties of poly(methyl methacrylate) (PMMA) as an amorphous polymer model. An evaluation combining adhesive contact and empiric spring–dashpot models has been applied to obtain the instantaneous elastic modulus E 0 and the infinitely elastic modulus E ∞ from nanoindentation creep curves. The value of E 0 has been compared to moduli obtained with atomic force microscopy-based nanoindentation (AFM-NI) and compression tests. Furthermore, the elastic modulus has been evaluated by the method introduced by Oliver and Pharr (O&P) for the NI and AFM-NI results. Comparison of the elastic modulus E 0 from the creep measurements of NI and AFM-NI to compression tests reveals good agreement of the results. However, only the O&P based AFM-NI results yield to lower values. ",

keywords = "AFM, Amorphous, Compression test, Creep, Nanoindentation",

author = "Petra Christ{\"o}fl and Czibula, {Caterina Marina} and Michael Berer and Gernot Oreski and Christian Teichert and Gerald Pinter",

note = "Publisher Copyright: {\textcopyright} 2020 The Authors",

year = "2021",

doi = "10.1016/j.polymertesting.2020.106978",

language = "English",

volume = "93",

journal = "Polymer Testing",

issn = "0142-9418",

publisher = "Elsevier B.V.",

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T1 - Comprehensive investigation of the viscoelastic properties of PMMA by nanoindentation

AU - Christöfl, Petra

AU - Czibula, Caterina Marina

AU - Berer, Michael

AU - Oreski, Gernot

AU - Teichert , Christian

AU - Pinter, Gerald

PY - 2021

Y1 - 2021

N2 - Instrumented nanoindentation (NI) was used to examine the viscoelastic properties of poly(methyl methacrylate) (PMMA) as an amorphous polymer model. An evaluation combining adhesive contact and empiric spring–dashpot models has been applied to obtain the instantaneous elastic modulus E 0 and the infinitely elastic modulus E ∞ from nanoindentation creep curves. The value of E 0 has been compared to moduli obtained with atomic force microscopy-based nanoindentation (AFM-NI) and compression tests. Furthermore, the elastic modulus has been evaluated by the method introduced by Oliver and Pharr (O&P) for the NI and AFM-NI results. Comparison of the elastic modulus E 0 from the creep measurements of NI and AFM-NI to compression tests reveals good agreement of the results. However, only the O&P based AFM-NI results yield to lower values.

AB - Instrumented nanoindentation (NI) was used to examine the viscoelastic properties of poly(methyl methacrylate) (PMMA) as an amorphous polymer model. An evaluation combining adhesive contact and empiric spring–dashpot models has been applied to obtain the instantaneous elastic modulus E 0 and the infinitely elastic modulus E ∞ from nanoindentation creep curves. The value of E 0 has been compared to moduli obtained with atomic force microscopy-based nanoindentation (AFM-NI) and compression tests. Furthermore, the elastic modulus has been evaluated by the method introduced by Oliver and Pharr (O&P) for the NI and AFM-NI results. Comparison of the elastic modulus E 0 from the creep measurements of NI and AFM-NI to compression tests reveals good agreement of the results. However, only the O&P based AFM-NI results yield to lower values.

KW - AFM

KW - Amorphous

KW - Compression test

KW - Creep

KW - Nanoindentation

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DO - 10.1016/j.polymertesting.2020.106978

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SN - 0142-9418

VL - 93

JO - Polymer Testing

JF - Polymer Testing

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Comprehensive investigation of the viscoelastic properties of PMMA by nanoindentation

Abstract

Keywords

ASJC Scopus subject areas

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Comprehensive investigation of the viscoelastic properties of PMMA by nanoindentation

Abstract

Keywords

ASJC Scopus subject areas

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CD-Laboratory for Fiber Swelling and Paper Performance

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