Effects of carbon nanotube aspect ratio on strengthening and tribological behavior of ultra high molecular weight polyethylene composite |
| |
| Affiliation: | 1. Biomaterials and Multiscale Mechanics Lab, Indian Institute of Technology Roorkee, Roorkee 247667, India;2. Department of Metallurgical and Materials Engineering, Indian Institute of Technology Roorkee, Roorkee 247667, India;1. State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering and, Sichuan University, Chengdu 610065, People''s Republic of China;2. Department of Biomedical Engineering, College of Polymer Science and Engineering and, Sichuan University, Chengdu 610065, People''s Republic of China;3. Rehabilitation Centre, Sport Hospital Attached to Chengdu Sport University, 251 Wuhou Temple Street, Chengdu 610041, People''s Republic of China;1. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, PR China;2. University of Chinese Academy of Sciences, Beijing 100039, PR China;1. Department of Materials Science and Technology, Instituto de Investigación en Ingeniería de Aragón, I3A, Universidad de Zaragoza, 50018 Zaragoza, Spain;2. Instituto de Carboquímica ICB-CSIC, Miguel Luesma Castán 4, 50018 Zaragoza, Spain;1. Department of Mechanical Engineering, National Institute of Science and Technology, Berhampur 761008, Odisha, India;2. Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Guwahati 781039, Assam, India |
| |
| Abstract: | Carbon-based nanomaterials are great choice as reinforcement to Ultra-High Molecular-Weight Polyethylene (UHMWPE), with potential use in orthopedics. While high in-plane-stiffness and strength of these nanomaterials help in toughening, their weaker out-of-plane integrity offers lubrication. Present study investigates effect of aspect ratio of carbon nanotubes (CNT) on toughening and solid-lubrication efficiency of UHMWPE-matrix. A nominal 0.05–0.1 wt.% of CNT addition increases hardness and elastic modulus of UHMWPE by 3–45% and 8–42%, respectively. Higher aspect ratio (HAR) CNTs are found more effective in improving hardness and modulus of UHMWPE. Wear rate and friction-coefficient also increase by 530% and 220%, respectively, while reinforced with HAR CNTs. Thermal analysis shows slight increase in crystallinity and stability of composite. HAR CNTs improve interfacial bonding with matrix, due to their morphological similarity to polymer chains, as compared to low aspect ratio CNT. Aspect ratio of CNTs significantly dominates strengthening and tribological behavior of UHMWPE. |
| |
| Keywords: | A. Polymer-matrix composites (PMCs) B. Wear B. Mechanical properties D. Thermal analysis |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
