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High Density Polyethylene Containing Antibacterial Silver Nanoparticles for Medical Applications
Author(s) -
Ziąbka Magdalena,
Mertas Anna,
Król Wojciech,
Bobrowski Andrzej,
Chłopek Jan
Publication year - 2012
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201250527
Subject(s) - materials science , silver nanoparticle , high density polyethylene , composite material , polymer , polyethylene , extrusion , wetting , scanning electron microscope , microstructure , composite number , nanoparticle , durability , chemical engineering , nanotechnology , engineering
Abstract High density polyethylene (HDPE) and composites with silver nanoparticles were processed via extrusion and injection moulding. The materials thus produced were tested against Gram‐positive Staphylococcus aureus and Gram‐negative Escherichia coli. The release of silver ions Ag + from composites was measured by means of ICP‐MS method. Surface parameters such as wettability and roughness were determined because of their effect on the most important processes at biomaterial interface. Scanning electron microscopy was used to investigate the microstructure. Durability tests of polymer and composite materials were carried out in a simulated biological solution by monitoring the pH and electrical conductivity, mass changes as well as the longitudinal ultrasonic wave measurements. Antibacterial tests prove that nanosilver modified materials have bactericidal activity against tested bacteria. Biological durability studies reveal stable behavior of incubated materials. Spectrometric analysis shows that the amount of silver release depends on the immersion time and the amount of nanopowder introduced into the polymer matrix.