Covalent assembly of metal nanoparticles on cellulose fabric and its antimicrobial activity

Sung Yong Park, Jae Woo Chung, Rodney D. Priestley, Seung Yeop Kwak

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

We develop an antimicrobial active robust metal-cellulose nanohybrid by covalent assembly of metal nanoparticles on cellulose fabric using a simple impregnation of thiol-modified cellulose fabric in colloidal silver (Ag) or palladium (Pd) nanoparticle solutions. The combined results of high resolution transmission electron microscopy (HR-TEM), field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDXS) and inductively coupled plasma atomic emission spectrometry (ICP-AES) reveal that the nanoparticles are highly loaded and dispersed in the thiol-modified cellulose fabric, and X-ray photoelectron spectroscopy (XPS) analysis reveals that the nanoparticles are immobilized in the fabric by a strong and stable covalent bond with thiol functional group. This robust covalent linkage between the nanoparticles and the fabric leads to a remarkable suppression of the release of metal nanoparticles from the fabric. In addition, the metal-cellulose nanohybrids show high antimicrobial activity in excess of 99. 9 % growth inhibition of the microorganism. Thus, we anticipate that our metal-cellulose nanohybrid may not only protect cell damage caused by penetration and fixation of metal nanoparticles into the human body but also act as a sustainable biomedical textile.

Original languageEnglish (US)
Pages (from-to)2141-2151
Number of pages11
JournalCellulose
Volume19
Issue number6
DOIs
StatePublished - Dec 1 2012

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics

Keywords

  • Antimicrobial activity
  • Covalent bonding
  • Metal-cellulose nanohybrids
  • Palladium nanoparticles
  • Silver nanoparticles

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