Evaluating the Effects of Nanosilica on Mechanical and Tribological Properties of Polyvinyl Alcohol/Polyacrylamide Polymer Composites for Artificial Cartilage from an Atomic Level
Due to the superior performances of nanosilica particles, this research has been designed to study their effects on the mechanical and trigological properties of a PVA/PAM polymer composite by a molecular dynamics simulation method. To realize the research objectives mentioned above, the molecular m...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-01-01
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| Series: | Polymers |
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| Online Access: | http://www.mdpi.com/2073-4360/11/1/76 |
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| author | Qinghua Wei Yanen Wang Yiwen Rao Anguo Jiang Kun Zhang Tingli Lu Xiongbiao Chen |
| author_facet | Qinghua Wei Yanen Wang Yiwen Rao Anguo Jiang Kun Zhang Tingli Lu Xiongbiao Chen |
| author_sort | Qinghua Wei |
| collection | DOAJ |
| description | Due to the superior performances of nanosilica particles, this research has been designed to study their effects on the mechanical and trigological properties of a PVA/PAM polymer composite by a molecular dynamics simulation method. To realize the research objectives mentioned above, the molecular models of amorphous cells and sandwiched friction models for pure polyvinyl alcohol (PVA)/polyacrylamide (PAM) (component weight ratio is 1:1) and PVA/PAM/nanosilica (component weight ratio is 5.75:5.75:1) polymer composites were constructed and simulated, respectively. The simulation results of the mechanical properties show increases about 31.6% in the bulk modulus, 53.1% in the shear modulus, and 50.1% in the Young’s modulus by incorporating a nanosilica particle into a pure PVA/PAM polymer composite. Meanwhile, the changes in Cauchy pressure, B/G ratio, and Poisson’s ratio values indicate that incorporating a nanosilica particle into pure PVA/PAM weakened the ductility of the composite. Incorporating a nanosilica particle into a pure PVA/PAM composite also showed a decrease about 28.2% in the abrasion rates and relative concentration distributions of polymer molecules in the final friction models. Additionally, the binding energy and the pair correlation functions between a nanosilica particle and the polymer chains in a cubic cell demonstrate that incorporating nanosilica into PVA/PAM polymer composites improves the internal binding strength between different components through the forming hydrogen bonds. As a result, the mechanical and tribological properties of PVA/PAM polymer composites can be enhanced by incorporating nanosilica particles. |
| first_indexed | 2024-04-13T08:13:06Z |
| format | Article |
| id | doaj.art-fb0894433d164639bd425aa1f7a35975 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-04-13T08:13:06Z |
| publishDate | 2019-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-fb0894433d164639bd425aa1f7a359752022-12-22T02:54:55ZengMDPI AGPolymers2073-43602019-01-011117610.3390/polym11010076polym11010076Evaluating the Effects of Nanosilica on Mechanical and Tribological Properties of Polyvinyl Alcohol/Polyacrylamide Polymer Composites for Artificial Cartilage from an Atomic LevelQinghua Wei0Yanen Wang1Yiwen Rao2Anguo Jiang3Kun Zhang4Tingli Lu5Xiongbiao Chen6Department of Industry Engineering, College of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, ChinaDepartment of Industry Engineering, College of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, ChinaDepartment of Industry Engineering, College of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, ChinaDepartment of Industry Engineering, College of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, ChinaDepartment of Industry Engineering, College of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, ChinaKey Laboratory for Space Bioscience & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi’an 710072, ChinaDepartment of Mechanical Engineering, College of Engineering, University of Saskatchewan, Saskatoon, SK S7N 5A9, CanadaDue to the superior performances of nanosilica particles, this research has been designed to study their effects on the mechanical and trigological properties of a PVA/PAM polymer composite by a molecular dynamics simulation method. To realize the research objectives mentioned above, the molecular models of amorphous cells and sandwiched friction models for pure polyvinyl alcohol (PVA)/polyacrylamide (PAM) (component weight ratio is 1:1) and PVA/PAM/nanosilica (component weight ratio is 5.75:5.75:1) polymer composites were constructed and simulated, respectively. The simulation results of the mechanical properties show increases about 31.6% in the bulk modulus, 53.1% in the shear modulus, and 50.1% in the Young’s modulus by incorporating a nanosilica particle into a pure PVA/PAM polymer composite. Meanwhile, the changes in Cauchy pressure, B/G ratio, and Poisson’s ratio values indicate that incorporating a nanosilica particle into pure PVA/PAM weakened the ductility of the composite. Incorporating a nanosilica particle into a pure PVA/PAM composite also showed a decrease about 28.2% in the abrasion rates and relative concentration distributions of polymer molecules in the final friction models. Additionally, the binding energy and the pair correlation functions between a nanosilica particle and the polymer chains in a cubic cell demonstrate that incorporating nanosilica into PVA/PAM polymer composites improves the internal binding strength between different components through the forming hydrogen bonds. As a result, the mechanical and tribological properties of PVA/PAM polymer composites can be enhanced by incorporating nanosilica particles.http://www.mdpi.com/2073-4360/11/1/76Nano-silicapolymer compositesmechanical propertiestribological propertiesreinforce mechanismmolecular dynamics |
| spellingShingle | Qinghua Wei Yanen Wang Yiwen Rao Anguo Jiang Kun Zhang Tingli Lu Xiongbiao Chen Evaluating the Effects of Nanosilica on Mechanical and Tribological Properties of Polyvinyl Alcohol/Polyacrylamide Polymer Composites for Artificial Cartilage from an Atomic Level Polymers Nano-silica polymer composites mechanical properties tribological properties reinforce mechanism molecular dynamics |
| title | Evaluating the Effects of Nanosilica on Mechanical and Tribological Properties of Polyvinyl Alcohol/Polyacrylamide Polymer Composites for Artificial Cartilage from an Atomic Level |
| title_full | Evaluating the Effects of Nanosilica on Mechanical and Tribological Properties of Polyvinyl Alcohol/Polyacrylamide Polymer Composites for Artificial Cartilage from an Atomic Level |
| title_fullStr | Evaluating the Effects of Nanosilica on Mechanical and Tribological Properties of Polyvinyl Alcohol/Polyacrylamide Polymer Composites for Artificial Cartilage from an Atomic Level |
| title_full_unstemmed | Evaluating the Effects of Nanosilica on Mechanical and Tribological Properties of Polyvinyl Alcohol/Polyacrylamide Polymer Composites for Artificial Cartilage from an Atomic Level |
| title_short | Evaluating the Effects of Nanosilica on Mechanical and Tribological Properties of Polyvinyl Alcohol/Polyacrylamide Polymer Composites for Artificial Cartilage from an Atomic Level |
| title_sort | evaluating the effects of nanosilica on mechanical and tribological properties of polyvinyl alcohol polyacrylamide polymer composites for artificial cartilage from an atomic level |
| topic | Nano-silica polymer composites mechanical properties tribological properties reinforce mechanism molecular dynamics |
| url | http://www.mdpi.com/2073-4360/11/1/76 |
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