Jun 14, 2014

High-performance aminated poly(phenylene sulfide)/ZnO nanocomposites for medical applications

ACS Applied Materials & Interfaces
Ana M Díez-Pascual, Angel L Díez-Vicente

Abstract

An aminated poly(phenylene sulfide) derivative (PPS-NH2) has been melt-blended with different contents of ZnO nanoparticles, and the morphology, thermal, mechanical, tribological, antibacterial, and dielectric properties of the resulting nanocomposites have been investigated. The nanoparticles were dispersed within the matrix without the need for surfactants or coupling agents. A gradual rise in the crystallization temperature and the degree of crystallinity was found with increasing ZnO loading, confirming that the nanoparticles act as nucleating agents for PPS-NH2 crystallization. The nanoparticles reduced the water absorption and strongly increased the thermal stability of the matrix, leading to an extraordinary increase in the initial degradation temperature of 80 °C at 8.0 wt % nanoparticle content. The results showed that the stiffness, strength, toughness, glass transition, and heat distortion temperature were remarkably enhanced, whereas the coefficient of thermal expansion decreased upon addition of ZnO, ascribed to strong hydrogen bonding interactions between the amino groups of the matrix and the hydroxyl moieties of the nanoparticles. Moreover, the nanocomposites retained the tensile properties after being exposed t...Continue Reading

Mentioned in this Paper

Sulfides
Science of Morphology
VEPH1 gene
Digestive Surfactants
Gram-Negative Bacteria
Metabolic Inhibition
Catabolism
Abnormal Shape
Stiffness
Anti-Bacterial Agents

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