Comprehensive investigation of the viscoelastic properties of PMMA by nanoindentation

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

*Korrespondierende/r Autor/in für diese Arbeit

Publikation: Beitrag in einer FachzeitschriftArtikel

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.

Originalspracheenglisch
Aufsatznummer106978
FachzeitschriftPolymer Testing
Jahrgang93
DOIs
PublikationsstatusVeröffentlicht - 2021

ASJC Scopus subject areas

  • !!Polymers and Plastics
  • Organische Chemie

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