Biomimetic study of a polymeric composite material for joint repair applications

2007 ◽  
Vol 22 (6) ◽  
pp. 1632-1639 ◽  
Author(s):  
Rahul Ribeiro ◽  
Poulomi Ganguly ◽  
Donald Darensbourg ◽  
Meitin Usta ◽  
A. Hikmet Ucisik ◽  
...  
Keyword(s):  
Composite Material ◽  
Polymeric Composite ◽  
Ultrahigh Molecular Weight Polyethylene ◽  
Elastic Behavior ◽  
Experimental Investigations ◽  
Polymeric Composite Material ◽  
Multiwalled Carbon ◽  
Atomic Force ◽  
Joint Repair

A longer lifespan is still being sought for biomaterials used for joint repair. We developed a new nanocomposite material of polytrimethylene carbonate (PTMC), hydroxyapatite (HAP), and multiwalled carbon nanotubes (MWNT) to mimic real cartilage. Experimental results were compared with those of natural cartilage and the conventional joint replacement material ultrahigh-molecular-weight polyethylene (UHMWPE). Friction experiments showed that our developed composite material had a coefficient of friction close to that of articular cartilage. Nanoindentation experiments indicated that the surface elastic behavior was similar to that of cartilage. The surface attraction forces on a silicon atomic force microscope tip were much higher for cartilage than those for the other two materials. These results hold promise for this artificial cartilage composite material’s performance in vivo, following further experimental investigations and chemical modifications.

POLYMERIC COMPOSITE MATERIAL FOR BONE IMPLANTS WITH THE FEASIBILITY OF INTRAOPERATIVE FORM CORRECTION

2021 ◽  
Vol 1 (19) ◽  
pp. 31-32
Author(s):  
F.S. Senatov ◽  
N.V. Strukova ◽  
M.S. Krivozubov ◽  
M.S. Generalova ◽  
K.E. Nikitin ◽  
...  
Keyword(s):  
Composite Material ◽  
Mechanical Characteristics ◽  
Polymeric Composite ◽  
In Vivo Studies ◽  
Polymeric Composite Material ◽  
Bone Implants

A biomimetic composite material based on polylactide (PLA), polycaprolactone (PCL) and hydroxyapatite (HAP) with high biocompatibility and osteoconductive properties was developed. The structural and mechanical characteristics of the material were investigated and in vitro and in vivo studies were carried out.

The interrelation between physical and mechanical properties of the polymeric composite and fractal dimension of structural elements its surface

2021 ◽  
pp. 54-60
Author(s):  
Val.I. Surikov ◽  
◽  
E.A. Rogachev ◽  
A.M. Lasitsa ◽  
◽  
...  
Keyword(s):  
Fractal Dimension ◽  
Physical And Mechanical Properties ◽  
Polymeric Composite ◽  
Polymeric Composite Material ◽  
Structural Elements ◽  
Qualitative And Quantitative Analysis ◽  
Force Microscopy ◽  
Qualitative And Quantitative ◽  
Atomic Force ◽  
Dimension Parameter

The paper shows the promising use of the "fractal dimension" parameter for qualitative and quantitative analysis of the surface structure of samples based of micrographs obtained by scanning electron microscopy and atomic force microscopy. The interrelation of this parameter with some mechanical characteristics of polymeric composite material PTFE-3%tu121 is investigated.

scholarly journals Cutting mode impact upon output process parameters at processing of polycrystalline composite materials

2017 ◽  
Vol 2 (6) ◽  
pp. 34-38
Author(s):  
Ю. Зубарев ◽  
Yu. Zubarev ◽  
А. Приемышев ◽  
A. Priyomyshev ◽  
А. Заостровский ◽  
...  
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Process Parameters ◽  
Polymeric Composite ◽  
Polymeric Composite Material ◽  
Output Process ◽  
Product Surface ◽  
Required Quality ◽  
Material Cutting

The peculiarities in polymeric composite material cutting are considered. The recommendations for use of different materials for cutters, their geometry and treatment modes are offered that allows obtaining the required quality of a product surface.

scholarly journals Design of a polymeric composite material femoral stem for hip joint implant

Polímeros ◽  
2019 ◽  
Vol 29 (4) ◽  
Author(s):  
Romeu Rony Cavalcante da Costa ◽  
Fellipe Roberto Biagi de Almeida ◽  
Amanda Albertin Xavier da Silva ◽  
Sandra Mara Domiciano ◽  
André Ferreira Costa Vieira
Keyword(s):  
Composite Material ◽  
Hip Joint ◽  
Femoral Stem ◽  
Polymeric Composite ◽  
Polymeric Composite Material ◽  
Joint Implant

scholarly journals A Polymeric Composite Material (rGO/PANI) for Acid Blue 129 Adsorption

Polymers ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1051 ◽  
Author(s):  
Tomasz Kukulski ◽  
Stanisław Wacławek ◽  
Daniele Silvestri ◽  
Kamil Krawczyk ◽  
Vinod V. T. Padil ◽  
...  
Keyword(s):  
Composite Material ◽  
Polymeric Composite ◽  
Cost Effective ◽  
Polymeric Composite Material ◽  
X Ray Diffraction ◽  
Reduced Graphene ◽  
Pseudo Second Order ◽  
Industrial Compounds ◽  
Acid Blue 129 ◽  
Acid Blue

Over the years, polyaniline (PANI) has received enormous attention due to its unique properties. Herein, it was chosen to develop a new polymeric composite material: reduced graphene oxide/polyaniline (rGO/PANI). The composite was prepared by a simple and cost-effective fabrication method of formation by mixing and sonication in various conditions. The obtained materials were characterized and identified using various techniques such as scanning electron microscopy (SEM), Raman and ATR–FTIR spectroscopy, and X-ray diffraction (XRD). The objective of the paper was to confirm its applicability for the removal of contaminants from water. Water could be contaminated by various types of pollutants, e.g., inorganics, heavy metals, and many other industrial compounds, including dyes. We confirmed that the Acid Blue 129 dyes can be substantially removed through adsorption on prepared rGO/PANI. The adsorption kinetic data were modeled using the pseudo-first-order and pseudo-second-order models and the adsorption isotherm model was identified.

Cranioplasty: Surgical Repair of Cranial Defects

1991 ◽  
Vol 8 (4) ◽  
pp. 247-249 ◽  
Author(s):  
Donald Leake
Keyword(s):  
Computed Tomography ◽  
Composite Material ◽  
Bone Grafting ◽  
Surgical Repair ◽  
Three Dimensional ◽  
Polymeric Composite ◽  
Polymeric Composite Material ◽  
Complex Contour ◽  
Contour Defects

A lightweight polymeric composite material is described for use with bone grafting for the restoration of complex contour defects of the neurocranium. Custom fabrication based on three-dimensional computed tomography provides an anatomically precise reconstruction with reestablishment of the bony integrity of the skull.

Synthesis of polystyrene-grafted carbon nanocapsules

2007 ◽  
Vol 22 (1) ◽  
pp. 132-140 ◽  
Author(s):  
Hsuan-Ming Huang ◽  
Hung-Chieh Tsai ◽  
I-Chun Liu ◽  
Raymond Chien-Chao Tsiang
Keyword(s):  
Electron Microscopy ◽  
Molecular Weight ◽  
Polymeric Composite ◽  
Decomposition Temperature ◽  
Polymeric Composite Material ◽  
Scanning Calorimetry ◽  
Force Microscopy ◽  
Atomic Force ◽  
Transmission Electron ◽  
Carbon Nanocapsules

A novel polymeric composite material, polystyrene (PS)-grafted carbon nanocapsules (CNCs), has been prepared. sec-butyllithium was first used to introduce negative charges on CNCs, and these CNC carbanions acted then as initiators for anionic polymerization of styrene. Based on a weight loss at the decomposition temperature of the butyl groups, the quantity of the butyls attached to the CNC surface was determined as 1.18 wt%, corresponding to 0.25 mol% initiator per mol of carbon atom on the CNC surface. Furthermore, the decomposition temperature of butylated CNCs was lower than that of the pristine CNCs by nearly 200 °C. The polystyrene content in our PS-grafted CNC sample was approximately 20%, and the molecular weight of the grafted PS on the surface of CNCs was calculated as 1200 gmol−1. Compared with the molecular weight of the ungrafted PS, the molecular weight of grafted PS was lower, thus indicating rates of initiation and/or propagation for CNC-bound carbanions lower than those of the free sec-butyllithium. The PS-grafted CNCs had good dispersion in toluene, tetrahydrofuran, cyclohexane, and other common organic solvents in which polystyrene was dissolvable and thus indicated good compatibility when further blended with other styrenic polymers. The PS-grafted CNCs were characterized and examined by Fourier transform infrared, thermogravimetric analysis, atomic force microscopy, differential scanning calorimetry, ultraviolet-visible spectroscopy, Raman spectroscopy, scanning electron microscopy, and transmission electron microscopy. The electron microscopy images indicated that the PS-grafted CNCs were homogeneous composites containing uniform polymer/CNC ratios.

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