The Influence of Nanohydroxyapatite on the Thermal, Mechanical, and Tribological Properties of Polyoxymethylene Nanocomposites
The influence of nanohydroxyapatite on the glass transition region and its activation energy, as well as on the tribological and mechanical properties of polyoxymethylene nanocomposites, was investigated using DMA, TOPEM DSC, nanoindentation, and nondestructive ultrasonic methods. It was found that...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2017-01-01
|
| Series: | International Journal of Polymer Science |
| Online Access: | http://dx.doi.org/10.1155/2017/9051914 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832555958367158272 |
|---|---|
| author | Kinga Pielichowska Dariusz Bieliński Michał Dworak Ewelina Kilian Beata Macherzyńska Stanisław Błażewicz |
| author_facet | Kinga Pielichowska Dariusz Bieliński Michał Dworak Ewelina Kilian Beata Macherzyńska Stanisław Błażewicz |
| author_sort | Kinga Pielichowska |
| collection | DOAJ |
| description | The influence of nanohydroxyapatite on the glass transition region and its activation energy, as well as on the tribological and mechanical properties of polyoxymethylene nanocomposites, was investigated using DMA, TOPEM DSC, nanoindentation, and nondestructive ultrasonic methods. It was found that the glass transition for unmodified POM was in the lower temperature range than in POM/HAp nanocomposites. Moreover, ΔCp and activation energy were larger for POM/HAp nanocomposites. Friction coefficient was higher for POM/HAp nanocomposites in comparison to both POM homopolymer and POM copolymer. Simultaneously, the indentation test results show that microhardness is also higher for POM/HAp nanocomposites than for POM. From ultrasonic investigations it was found that the highest values of both longitudinal and transverse propagation waves and Young’s and shear modulus for POM homopolymer (DH) and POM copolymer T2H and their nanocomposites can be attributed to their higher degree of crystallinity in comparison to UH copolymer. Moreover, for POM/HAp nanocomposites with 5% of HAp, ultrasonic longitudinal wave velocity was almost constant even after 1000000 mechanical loading cycles, evidencing an enhancement of mechanical properties by HAp nanoparticles. |
| format | Article |
| id | doaj-art-d332ec07bd384117bec5b8118904db8a |
| institution | Kabale University |
| issn | 1687-9422 1687-9430 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Polymer Science |
| spelling | doaj-art-d332ec07bd384117bec5b8118904db8a2025-02-03T05:46:50ZengWileyInternational Journal of Polymer Science1687-94221687-94302017-01-01201710.1155/2017/90519149051914The Influence of Nanohydroxyapatite on the Thermal, Mechanical, and Tribological Properties of Polyoxymethylene NanocompositesKinga Pielichowska0Dariusz Bieliński1Michał Dworak2Ewelina Kilian3Beata Macherzyńska4Stanisław Błażewicz5Department of Biomaterials, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, PolandPolymer Institute, Technical University of Lodz, ul. Zwirki 36, 90-924 Łódź, PolandDepartment of Biomaterials, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, PolandDepartment of Biomaterials, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, PolandDepartment of Biomaterials, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, PolandDepartment of Biomaterials, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Kraków, PolandThe influence of nanohydroxyapatite on the glass transition region and its activation energy, as well as on the tribological and mechanical properties of polyoxymethylene nanocomposites, was investigated using DMA, TOPEM DSC, nanoindentation, and nondestructive ultrasonic methods. It was found that the glass transition for unmodified POM was in the lower temperature range than in POM/HAp nanocomposites. Moreover, ΔCp and activation energy were larger for POM/HAp nanocomposites. Friction coefficient was higher for POM/HAp nanocomposites in comparison to both POM homopolymer and POM copolymer. Simultaneously, the indentation test results show that microhardness is also higher for POM/HAp nanocomposites than for POM. From ultrasonic investigations it was found that the highest values of both longitudinal and transverse propagation waves and Young’s and shear modulus for POM homopolymer (DH) and POM copolymer T2H and their nanocomposites can be attributed to their higher degree of crystallinity in comparison to UH copolymer. Moreover, for POM/HAp nanocomposites with 5% of HAp, ultrasonic longitudinal wave velocity was almost constant even after 1000000 mechanical loading cycles, evidencing an enhancement of mechanical properties by HAp nanoparticles.http://dx.doi.org/10.1155/2017/9051914 |
| spellingShingle | Kinga Pielichowska Dariusz Bieliński Michał Dworak Ewelina Kilian Beata Macherzyńska Stanisław Błażewicz The Influence of Nanohydroxyapatite on the Thermal, Mechanical, and Tribological Properties of Polyoxymethylene Nanocomposites International Journal of Polymer Science |
| title | The Influence of Nanohydroxyapatite on the Thermal, Mechanical, and Tribological Properties of Polyoxymethylene Nanocomposites |
| title_full | The Influence of Nanohydroxyapatite on the Thermal, Mechanical, and Tribological Properties of Polyoxymethylene Nanocomposites |
| title_fullStr | The Influence of Nanohydroxyapatite on the Thermal, Mechanical, and Tribological Properties of Polyoxymethylene Nanocomposites |
| title_full_unstemmed | The Influence of Nanohydroxyapatite on the Thermal, Mechanical, and Tribological Properties of Polyoxymethylene Nanocomposites |
| title_short | The Influence of Nanohydroxyapatite on the Thermal, Mechanical, and Tribological Properties of Polyoxymethylene Nanocomposites |
| title_sort | influence of nanohydroxyapatite on the thermal mechanical and tribological properties of polyoxymethylene nanocomposites |
| url | http://dx.doi.org/10.1155/2017/9051914 |
| work_keys_str_mv | AT kingapielichowska theinfluenceofnanohydroxyapatiteonthethermalmechanicalandtribologicalpropertiesofpolyoxymethylenenanocomposites AT dariuszbielinski theinfluenceofnanohydroxyapatiteonthethermalmechanicalandtribologicalpropertiesofpolyoxymethylenenanocomposites AT michałdworak theinfluenceofnanohydroxyapatiteonthethermalmechanicalandtribologicalpropertiesofpolyoxymethylenenanocomposites AT ewelinakilian theinfluenceofnanohydroxyapatiteonthethermalmechanicalandtribologicalpropertiesofpolyoxymethylenenanocomposites AT beatamacherzynska theinfluenceofnanohydroxyapatiteonthethermalmechanicalandtribologicalpropertiesofpolyoxymethylenenanocomposites AT stanisławbłazewicz theinfluenceofnanohydroxyapatiteonthethermalmechanicalandtribologicalpropertiesofpolyoxymethylenenanocomposites AT kingapielichowska influenceofnanohydroxyapatiteonthethermalmechanicalandtribologicalpropertiesofpolyoxymethylenenanocomposites AT dariuszbielinski influenceofnanohydroxyapatiteonthethermalmechanicalandtribologicalpropertiesofpolyoxymethylenenanocomposites AT michałdworak influenceofnanohydroxyapatiteonthethermalmechanicalandtribologicalpropertiesofpolyoxymethylenenanocomposites AT ewelinakilian influenceofnanohydroxyapatiteonthethermalmechanicalandtribologicalpropertiesofpolyoxymethylenenanocomposites AT beatamacherzynska influenceofnanohydroxyapatiteonthethermalmechanicalandtribologicalpropertiesofpolyoxymethylenenanocomposites AT stanisławbłazewicz influenceofnanohydroxyapatiteonthethermalmechanicalandtribologicalpropertiesofpolyoxymethylenenanocomposites |