Characterization of electrically conductive biodegradable materials for potential medical application

Electrically conductive porous Si/SiC fiber media were prepared by infiltration of liquid silicon into porous carbon fiber preforms. The series rule of mixture for the effective electrical conductivity was applied to the disc shaped samples to estimate their silicon content, effective electrical conductivity and porosity. The electrical conductivity was estimated by assuming the disc sample as a plate of equivalent geometry, i.e., same thickness, electrode distance and volume. As the volumetric content of silicon in a sample increases from 0.026% to 0.97%, the estimated electrical conductivity increases from 0.17 S/cm to 2.09 S/cm. The porosity of the samples measured by Archimedes principle was in the range of 75~83% and 1~4% less than the one estimated by the series rule of mixture for the effective electrical conductivity.

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Synthesis and characterization of polypyrrole-graft-poly(ε-caprolactone) copolymers: new electrically conductive nanocomposites

Synthetic Metals ◽

10.1016/s0379-6779(01)00503-3 ◽

2002 ◽

Vol 126 (2-3) ◽

pp. 173-178 ◽

Cited By ~ 56

Author(s):

D Mecerreyes ◽

R Stevens ◽

C Nguyen ◽

J.A Pomposo ◽

M Bengoetxea ◽

...

Keyword(s):

Synthesis And Characterization ◽

Electrically Conductive ◽

Conductive Nanocomposites

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Enhanced Cellular Activity on Conducting Polymer

Research Anthology on Emerging Technologies and Ethical Implications in Human Enhancement ◽

10.4018/978-1-7998-8050-9.ch038 ◽

2021 ◽

pp. 734-773

Author(s):

Rajiv Borah ◽

Ashok Kumar

Keyword(s):

Tissue Engineering ◽

Conducting Polymer ◽

Neural Tissue ◽

Neuronal Model ◽

Neural Tissue Engineering ◽

Electrically Conductive ◽

Pc12 Cell Line ◽

Nih 3T3

This chapter includes detailed review of the research undertaken with conducting polymer (CP) based composites with chitosan (Ch) for tissue engineering till date. The beneficial role of electrically conductive biomaterials has been discussed with the possible strategies to overcome the shortcomings of CP alone through blending with Ch due to its excellent biocompatibility, biodegradability, and bioactivity. Additionally, this embodiment deals with the optimization and characterization of electrically conductive, biocompatible and biodegradable Polyaniline: Chitosan (PAni:Ch) nanocomposites as cell culture substrates for MDA-MB-231 and NIH 3T3 fibroblast in order to examine the combined effect of nanofiber structure and surface modification on cell-biomaterial interactions. The nanocomposites were further checked as a conductive scaffold for electrical stimulation of a neuronal model PC12 cell line in order to explore the potential of the materials in neural tissue engineering.

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Synthesis, Crystal Structures, and Spectroscopic Characterization of Bis-aldehyde Monomers and Their Electrically Conductive Pristine Polyazomethines

Polymers ◽

10.3390/polym11091498 ◽

2019 ◽

Vol 11 (9) ◽

pp. 1498 ◽

Cited By ~ 2

Author(s):

Abdul Hafeez ◽

Zareen Akhter ◽

John F. Gallagher ◽

Nawazish Ali Khan ◽

Asghari Gul ◽

...

Keyword(s):

Electrical Conductivity ◽

Spectroscopic Characterization ◽

Spectroscopic Techniques ◽

Conductivity Measurements ◽

X Ray Diffraction ◽

Electrically Conductive ◽

X Ray ◽

Vis Spectroscopy ◽

Ft Ir

Bis-aldehyde monomers 4-(4′-formyl-phenoxy)benzaldehyde (3a), 3-methoxy-4-(4′-formyl-phenoxy)benzaldehyde (3b), and 3-ethoxy-4-(4′-formyl-phenoxy)benzaldehyde (3c) were synthesized by etherification of 4-fluorobenzaldehyde (1) with 4-hydroxybenzaldehyde (2a), 3-methoxy-4-hydroxybenzaldehyde (2b), and 3-ethoxy-4-hydroxybenzaldehyde (2c), respectively. Each monomer was polymerized with p-phenylenediamine and 4,4′-diaminodiphenyl ether to yield six poly(azomethine)s. Single crystal X-ray diffraction structures of 3b and 3c were determined. The structural characterization of the monomers and poly(azomethine)s was performed by FT-IR and NMR spectroscopic techniques and elemental analysis. Physicochemical properties of polymers were investigated by powder X-ray diffraction, thermogravimetric analysis (TGA), viscometry, UV–vis, spectroscopy and photoluminescence. These polymers were subjected to electrical conductivity measurements by the four-probe method, and their conductivities were found to be in the range 4.0 × 10−5 to 6.4 × 10−5 Scm−1, which was significantly higher than the values reported so far.

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