Evaluation of Dynamic Mechanical and Thermal Behavior of HDPE Reinforced with MWCNT/h-BNNP: An Attempt to Find Possible Substitute for a Metallic Knee in Transfemoral Prosthesis

Nanotechnology has extended applications of conventional engineering plastics like high-density polyethylene (HDPE) to different biomedical implants such as articular cartilage and fracture fixation plates. However, applications in a load-bearing element like a prosthetic knee require estimation of...

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Bibliographic Details
Published in:International journal of thermophysics 2019-10, Vol.40 (10), p.1-20, Article 93
Main Authors: Badgayan, Nitesh Dhar, Sahu, Santosh Kumar, Samanta, Sutanu, Sreekanth, P. S. Rama
Format: Article
Language:English
Subjects:
Biomedical engineering
Boron nitride
Cartilage
Classical Mechanics
Condensed Matter Physics
Damping
Elastic properties
Fracture toughness
Geophysics
Heat conductivity
Heat transfer
High density polyethylenes
Impact strength
Industrial Chemistry/Chemical Engineering
Load bearing elements
Mechanical knees
Mechanical properties
Multi wall carbon nanotubes
Nanocomposites
Nanotechnology
Physical Chemistry
Physics
Physics and Astronomy
Polymers
Prostheses
Stability analysis
Stiffness
Substitutes
Surgical implants
Thermal analysis
Thermal conductivity
Thermal stability
Thermodynamic properties
Thermodynamics
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Summary:Nanotechnology has extended applications of conventional engineering plastics like high-density polyethylene (HDPE) to different biomedical implants such as articular cartilage and fracture fixation plates. However, applications in a load-bearing element like a prosthetic knee require estimation of static, dynamic mechanical, and variation of mechanical properties with temperature. The current work reports on the application of HDPE-based nanocomposite as a possible substitute for a metallic knee in a prosthetic leg. HDPE was reinforced with multiwalled carbon nanotubes (MWCNTs)-1D and boron nitride nanoplatelets (h-BNNPs)-2D to form different composites and hybrids. The preparation route followed the mechanical mixing tandem by curing in a vacuum oven. Dynamic mechanical thermal analysis (DMTA) results confirmed the best elastic and damping property by 0.1 MWCNT composite. The mechanical properties like hardness, impact toughness, and stiffness of 0.25 MWCNT/0.15 h-BNNP were observed to increase by 172 %, 190 %, and 50 % in comparison with pure HDPE. A similar observation was noted during the evaluation of thermal conductivity, thermal stability, and %crystallinity. A modified Halpin–Tsai and Hamilton–Crosser model was used to predict the stiffness and thermal conductivity of composites. The test results confirmed 0.25 MWCNT/0.15 h-BNNP as a potential possible substitute for a metallic knee in a transfemoral prosthesis.
ISSN:0195-928X
1572-9567
DOI:10.1007/s10765-019-2559-4