HYBRID MATERIAL CONTAINING SILVER NANOPARTICLES, METHOD FOR OBTAINING THE SAME AND USE THEREOF
HYBRID MATERIAL CONTAINING SILVER NANOPARTICLES, METHOD FOR OBTAINING THE SAME AND USE THEREOF
The hybrid material is composed of calcium carbonate microparticles with the polyelectrolyte additive and silver nanoparticles (nAg) embedded in its structure. The process of making of the hybrid material comprises of ultrasound-assisted coprecipitation of calcium carbonate in aqueous medium in the presence of polyelectrolyte and in the presence of silver nanoparticles (nAg). The hybrid material can be used as an antibacterial and antifungal agent, especially to protect goose down feathers from
The research and development efforts concerning this technology are continued at the Faculty of Chemistry of the Jagiellonian University. Currently the Centre for Innovations, Technology Transfer and University Development (CITTRU) is looking for companies and institutions interested in obtaining a license for the material and its applications described above.
License agreement
Patent Number: PL395002A1
Application Number: PL395002A
Inventor: ZAPOTOCZNY SZCZEPAN | BULWAN MARIA | DLUGOSZ MACIEJ | NOWAKOWSKA MARIA
Priority Date: 24 May 2011
Priority Number: PL395002A1
Application Date: 24 May 2011
Publication Date: 3 Dec 2012
IPC Current: A01N002508 | A01N005906 | A01N005916 | A01P000100 | A01P000300
Assignee Applicant: Univ Jagiellonski
Summary: Hybrid material used as antibacterial and antifungal agent for protecting aqueous solutions and aqueous dispersions or non-aqueous solutions and dispersions and polymer materials such as lacquers, paints, building materials, or protecting goose down feathers from negative influence of microorganisms, where the goose down feathers are used as fillings of ready products such as blankets, pillows, jackets, suits (all claimed). Microbiological tests were carried out for the hybrid material as well as for the feathers protected with it. All experiments were done in bacterial suspensions (in physiological salt) of a given concentration expressed in McFarland scale (McF) based on densitometric measurements standardized on barium sulfate colloids. An initial rise in the bacterial concentration after addition of silver microparticles was noted which can be attributed to their contribution to the scattering of the probing light beam. The bacterial concentration measurements in the case of down feathers were done only after removing the feathers from the suspension. Antibacterial and antifungal action of the hybrid material of calcium carbonate microparticles containing silver nanoparticles showed that Candida species 3 concentration after 24 hours of incubation was 0.7 McF from an initial concentration of 0.9 McF. Bacteriostatic action of feathers protected with the hybrid material showed that Staphylococcus epidermidis concentration after 24 hours of incubation was 0.7 McF from an initial concentration of 1 McF.
Novelty: Hybrid material used as antibacterial and antifungal agent, e.g. to protect goose down feathers from microorganisms, comprises calcium carbonate microparticle matrix with polyelectrolyte and with silver nanoparticles embedded inside
生物医学
病原
波兰
