Synthesis of polyethylene/silica-silver nanocomposites with antibacterial properties by in situ polymerization

Giovani Pavoski, Renan Kalikoski, Gustavo Souza, Luiz Fernando Wentz Brum, Cristiane dos Santos, Ahmad Abo Markeb, João Henrique Zimnoch dos Santos, Xavier Font, Ignacio dell'Erba, Griselda Barrera Galland

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4 Citations (Scopus)

Abstract

© 2018 Elsevier Ltd Synthesis of polyethylene/silica-silver nanocomposites (PE/SiAg) by in situ polymerization with supported and non-supported catalysts was achieved using the Cp2ZrCl2/MAO catalytic system. Silica-silver nanoparticles (SiAg) were synthesized via two routes (acidic and basic) and characterized to determine the silver content, morphology, and size. The basic route resulted in particles with a lower concentration of silver and with smaller diameters. The polymerizations of ethylene in the presence of the fillers produced high yields of nanocomposites. The catalyst support in SiAg was efficient, although the percentage of Zr effectively immobilized was very low. Polyethylene melting and crystallization temperatures did not change significantly with the addition of the filler. SEM images showed differences in the morphologies between the supported and non-supported catalysis, and between the acidic and basic conditions for SiAg preparation. Two different tests were performed and showed that the nanocomposites inhibited the proliferation of bacteria in contact with the films.
Original languageEnglish
Pages (from-to)92-101
JournalEuropean Polymer Journal
Volume106
DOIs
Publication statusPublished - 1 Sep 2018

Keywords

  • Nanocomposites
  • Polymerization
  • Silver nanoparticles

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