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- Title
Covalent assembly of metal nanoparticles on cellulose fabric and its antimicrobial activity.
- Authors
Park, Sung; Chung, Jae; Priestley, Rodney; Kwak, Seung-Yeop
- 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.
- Subjects
NANOPARTICLES; CELLULOSE; ANTI-infective agents; PALLADIUM; SILVER
- Publication
Cellulose, 2012, Vol 19, Issue 6, p2141
- ISSN
0969-0239
- Publication type
Article
- DOI
10.1007/s10570-012-9773-6