Correlations between Microscale Indentation Creep and Macroscale Tensile Creep of Polymers
We compared the results of various microscale indentation creep (microcreep) measurements with macroscale tensile creep (macrocreep) measurements of three common polymers: high-density polyethylene (PE), polypropylene (PP), and polystyrene (PS). The main objective was to verify if the short-term mic...
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MDPI AG
2023-01-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/2/834 |
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| author | Miroslav Slouf Milos Steinhart Pavel Nemecek Veronika Gajdosova Jiri Hodan |
| author_facet | Miroslav Slouf Milos Steinhart Pavel Nemecek Veronika Gajdosova Jiri Hodan |
| author_sort | Miroslav Slouf |
| collection | DOAJ |
| description | We compared the results of various microscale indentation creep (microcreep) measurements with macroscale tensile creep (macrocreep) measurements of three common polymers: high-density polyethylene (PE), polypropylene (PP), and polystyrene (PS). The main objective was to verify if the short-term microcreep experiments could predict long-term macrocreep behavior of the selected polymers, whose properties ranged from very soft and ductile (PE) to very hard and brittle (PS). The second objective was to compare several creep predictive schemes: the empirical power law model (PL) and several types of phenomenological elasto-visco-plastic models (EVP). In order to facilitate this task, we developed a universal program package named MCREEP, which fits PL and EVP models to both tensile and indentation creep data. All experimental results and theoretical predictions documented that: (i) regardless of the creep experiment type, both micro- and macrocreep resistance increased in the following order: PE < PP < PS, (ii) the short-term microcreep experiments could be used to predict qualitatively the long-term macrocreep behavior, and (iii) the simple empirical power law model yielded better predictions of long-term creep behavior than the more sophisticated elasto-visco-plastic models. |
| first_indexed | 2024-03-09T11:47:54Z |
| format | Article |
| id | doaj.art-dba31de555ac4a7499d336ffe1d7e672 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T11:47:54Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-dba31de555ac4a7499d336ffe1d7e6722023-11-30T23:18:51ZengMDPI AGMaterials1996-19442023-01-0116283410.3390/ma16020834Correlations between Microscale Indentation Creep and Macroscale Tensile Creep of PolymersMiroslav Slouf0Milos Steinhart1Pavel Nemecek2Veronika Gajdosova3Jiri Hodan4Institute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovsky Sq. 2, 16206 Prague, Czech RepublicInstitute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovsky Sq. 2, 16206 Prague, Czech RepublicInstitute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovsky Sq. 2, 16206 Prague, Czech RepublicInstitute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovsky Sq. 2, 16206 Prague, Czech RepublicInstitute of Macromolecular Chemistry of the Czech Academy of Sciences, Heyrovsky Sq. 2, 16206 Prague, Czech RepublicWe compared the results of various microscale indentation creep (microcreep) measurements with macroscale tensile creep (macrocreep) measurements of three common polymers: high-density polyethylene (PE), polypropylene (PP), and polystyrene (PS). The main objective was to verify if the short-term microcreep experiments could predict long-term macrocreep behavior of the selected polymers, whose properties ranged from very soft and ductile (PE) to very hard and brittle (PS). The second objective was to compare several creep predictive schemes: the empirical power law model (PL) and several types of phenomenological elasto-visco-plastic models (EVP). In order to facilitate this task, we developed a universal program package named MCREEP, which fits PL and EVP models to both tensile and indentation creep data. All experimental results and theoretical predictions documented that: (i) regardless of the creep experiment type, both micro- and macrocreep resistance increased in the following order: PE < PP < PS, (ii) the short-term microcreep experiments could be used to predict qualitatively the long-term macrocreep behavior, and (iii) the simple empirical power law model yielded better predictions of long-term creep behavior than the more sophisticated elasto-visco-plastic models.https://www.mdpi.com/1996-1944/16/2/834microindentationindentation creeptensile creeppolymersviscoelasticity |
| spellingShingle | Miroslav Slouf Milos Steinhart Pavel Nemecek Veronika Gajdosova Jiri Hodan Correlations between Microscale Indentation Creep and Macroscale Tensile Creep of Polymers Materials microindentation indentation creep tensile creep polymers viscoelasticity |
| title | Correlations between Microscale Indentation Creep and Macroscale Tensile Creep of Polymers |
| title_full | Correlations between Microscale Indentation Creep and Macroscale Tensile Creep of Polymers |
| title_fullStr | Correlations between Microscale Indentation Creep and Macroscale Tensile Creep of Polymers |
| title_full_unstemmed | Correlations between Microscale Indentation Creep and Macroscale Tensile Creep of Polymers |
| title_short | Correlations between Microscale Indentation Creep and Macroscale Tensile Creep of Polymers |
| title_sort | correlations between microscale indentation creep and macroscale tensile creep of polymers |
| topic | microindentation indentation creep tensile creep polymers viscoelasticity |
| url | https://www.mdpi.com/1996-1944/16/2/834 |
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