SciELO - Scientific Electronic Library Online

 
vol.26 issue45In vitro comparison of cytocompotibility between Fibroin and polypropylene biomoteriolsDevelopment of o refractory mold based on chamotte/ plaster for jewelry micro-casting with pre-set emeralds author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Article

Indicators

Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google

Share


Revista Facultad de Ingeniería

Print version ISSN 0121-1129

Abstract

ROJAS-LEMA, Sandra Paola; GALEAS-HURTADO, Salomé Gabriela  and  GUERRERO-BARRAGAN, Víctor Hugo. Improvement of silver nonoporticle impregnation on cotton fabrics using o binder. Rev. Fac. ing. [online]. 2017, vol.26, n.45, pp.109-119. ISSN 0121-1129.  http://dx.doi.org/10.19053/01211129.v26.n45.2017.6420.

In this work, silver nanoparticles were synthesized by the polyol process, which reduces silver nitrate with ethylene glycol. The temperature effect and the polyvinylpyrrolidone (PVP) amount were studied. The temperatures used were 100, 120 and 140 °C. Three ratios of 0.00, 0.25, and 0.50 (% w/w) of PVP/AgNO3 were established. Nanoparticles with sizes less than 30 nm were obtained in conditions of 120 °C and 0.5 % w/w of PVP/AgNO3. Posteriorly, nanoparticles in concentrations of 10 and 20 ppm were deposited on cotton fabric by the pad-dry-cure technique, in order to analyze their bactericidal properties against the Gram positive bacteria Staphylococcus aureus 25923. The tests showed that cotton fabric with nanoparticles in concentrations of 10 and 20 ppm had good bactericidal properties, reducing bacterial colonies by over 98 %. Finally, a washing stability study of the fabrics impregnated with silver nanoparticles was performed, and an acrylic binder was added during the impregnation process. The results were obtained by bacteriological analyzes.

Keywords : Bactericidal Properties; Binder; Cotton; Silver Nanoparticles.

        · abstract in Spanish | Portuguese     · text in English     · English ( pdf )