Effect of infill pattern on the mechanical properties of polydopamine-coated polylactic acid orthopedic bone plates developed by fused filament fabrication
bone plate;
coating;
elongation at break;
flexural strength;
infill pattern;
polydopamine;
tensile strength;
SCAFFOLDS;
CHEMISTRY;
CELL;
D O I:
10.1002/pen.26210
中图分类号:
TQ [化学工业];
学科分类号:
0817 ;
摘要:
Distal fractures are the most commonly experienced type of fractures that require fixation of bone plates for healing of fractured bones. Poly Lactic Acid (PLA)-based bone plates are porous and light in weight. However, they lack mechanical properties that limit their application in biomedical field. Polydopamine coating has been witnessed to undergo covalent interactions, enhancing the mechanical properties of the substrate. The present study is based on the fabrication of PLA-based bone plates using Fused Filament Fabrication with varying infill patterns. The infill patterns in the study include octet, cubic, grid, concentric, lines, and gyroid. Thereafter, polydopamine coating was deposited on these bone plates using direct immersion coating method. In the study, the effect of infill pattern on coating deposition and modification of mechanical properties has been studied. The microscopic images of fractured bone plates were captured. It was concluded that polydopamine coating was successful in improving mechanical properties for all infill patterns. The findings suggested that a concentric pattern should be used for applications that require both high mechanical strength and maximum elongation at break because elongation at break is higher for concentric patterns than gyroid patterns. Also, for applications requiring only high mechanical strength, a gyroid pattern should be used.
机构:
Washington State Univ, Sch Mech & Mat Engn, WM Keck Biomed Mat Res Lab, Pullman, WA 99164 USAWashington State Univ, Sch Mech & Mat Engn, WM Keck Biomed Mat Res Lab, Pullman, WA 99164 USA
Bose, Susmita
Roy, Mangal
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机构:
Washington State Univ, Sch Mech & Mat Engn, WM Keck Biomed Mat Res Lab, Pullman, WA 99164 USAWashington State Univ, Sch Mech & Mat Engn, WM Keck Biomed Mat Res Lab, Pullman, WA 99164 USA
Roy, Mangal
Bandyopadhyay, Amit
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机构:
Washington State Univ, Sch Mech & Mat Engn, WM Keck Biomed Mat Res Lab, Pullman, WA 99164 USAWashington State Univ, Sch Mech & Mat Engn, WM Keck Biomed Mat Res Lab, Pullman, WA 99164 USA
机构:
Washington State Univ, Sch Mech & Mat Engn, WM Keck Biomed Mat Res Lab, Pullman, WA 99164 USAWashington State Univ, Sch Mech & Mat Engn, WM Keck Biomed Mat Res Lab, Pullman, WA 99164 USA
Bose, Susmita
Roy, Mangal
论文数: 0引用数: 0
h-index: 0
机构:
Washington State Univ, Sch Mech & Mat Engn, WM Keck Biomed Mat Res Lab, Pullman, WA 99164 USAWashington State Univ, Sch Mech & Mat Engn, WM Keck Biomed Mat Res Lab, Pullman, WA 99164 USA
Roy, Mangal
Bandyopadhyay, Amit
论文数: 0引用数: 0
h-index: 0
机构:
Washington State Univ, Sch Mech & Mat Engn, WM Keck Biomed Mat Res Lab, Pullman, WA 99164 USAWashington State Univ, Sch Mech & Mat Engn, WM Keck Biomed Mat Res Lab, Pullman, WA 99164 USA