6533b86dfe1ef96bd12c94fb

RESEARCH PRODUCT

Accurately evaluating Young’s modulus of polymers through nanoindentations: a phenomenological correction factor to the Oliver and Pharr procedure

Alexander AlexeevJ Joachim LoosDavide TranchidaStefano Piccarolo

subject

chemistry.chemical_classificationMaterials sciencePhysics and Astronomy (miscellaneous)Young's modulusLarge rangePolymernanoindentation elastic modulus polymersNanoindentationViscoelasticityModulisymbols.namesakeSettore ING-IND/22 - Scienza E Tecnologia Dei MaterialiClassical mechanicschemistryIndentationsymbolsComposite materialElastic modulus

description

The Oliver and Pharr [J. Mater. Res. 7, 1564 (1992)] procedure is a widely used tool to analyze nanoindentation force curves obtained on metals or ceramics. Its application to polymers is, however, difficult, as Young’s moduli are commonly overestimated mainly because of viscoelastic effects and pileup. However, polymers spanning a large range of morphologies have been used in this work to introduce a phenomenological correction factor. It depends on indenter geometry: sets of calibration indentations have to be performed on some polymers with known elastic moduli to characterize each indenter.

yearjournalcountryeditionlanguage
2006-10-23
10.1021/ma062140khttp://hdl.handle.net/10447/9634