Creep, the deformation over time of a material under stress, is one characteristic of composites ... more Creep, the deformation over time of a material under stress, is one characteristic of composites that has resulted in poor performance in certain applications. This work was undertaken to investigate the advantages of using PP fibres in random poly(propylene-co-ethylene) (PPE) with different fibre concentrations. Addition of long polypropylene fibres into PPE greatly improved the creep resistance and modulus of elasticity
Journal of Biomedical Materials Research Part A, 2015
In the current study, we describe the synthesis, material characteristics and cytocompatibility o... more In the current study, we describe the synthesis, material characteristics and cytocompatibility of conducting poly(ε-caprolactone) (PCL) based nano-composite films. Electrically conducting carbon nano-fillers (carbon nano-fiber (CNF), nano-graphite (NG) and liquid exfoliated graphite (G)) were used to prepare porous film type scaffolds using modified solvent casting methods. The electrical conductivity of the nano-composite films was increased when carbon nano-fillers were incorporated in the PCL matrix. CNF based nano-composite films showed the highest increase in electrical conductivity. The presence of an ionic solution significantly improved the conductivity of some of the polymers, however at least 24 h was required to absorb the simulated ion solutions. CNF based nano-composite films were found to have good thermo-mechanical properties compared to other conducting polymer films due to better dispersion and alignment in the critical direction. Increased nano-filler content incr...
Creep, the deformation over time of a material under stress, is one characteristic of composites ... more Creep, the deformation over time of a material under stress, is one characteristic of composites that has resulted in poor performance in certain applications. This work was undertaken to investigate the advantages of using PP fibres in random poly(propylene-co-ethylene) (PPE) with different fibre concentrations. Addition of long polypropylene fibres into PPE greatly improved the creep resistance and modulus of elasticity
Journal of Biomedical Materials Research Part A, 2015
In the current study, we describe the synthesis, material characteristics and cytocompatibility o... more In the current study, we describe the synthesis, material characteristics and cytocompatibility of conducting poly(ε-caprolactone) (PCL) based nano-composite films. Electrically conducting carbon nano-fillers (carbon nano-fiber (CNF), nano-graphite (NG) and liquid exfoliated graphite (G)) were used to prepare porous film type scaffolds using modified solvent casting methods. The electrical conductivity of the nano-composite films was increased when carbon nano-fillers were incorporated in the PCL matrix. CNF based nano-composite films showed the highest increase in electrical conductivity. The presence of an ionic solution significantly improved the conductivity of some of the polymers, however at least 24 h was required to absorb the simulated ion solutions. CNF based nano-composite films were found to have good thermo-mechanical properties compared to other conducting polymer films due to better dispersion and alignment in the critical direction. Increased nano-filler content incr...
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