UPM Institutional Repository

Physical and antimicrobial characterization of self assembled silver nanoparticle/chitosan onto low density polyethylene film as active packaging polymer


Citation

Jokar, Maryam and Abdul Rahman, Russly and Abdullah, Luqman Chuah (2014) Physical and antimicrobial characterization of self assembled silver nanoparticle/chitosan onto low density polyethylene film as active packaging polymer. Journal of Nano Research, 27. pp. 53-64. ISSN 1662-5250; ESSN: 1661-9897

Abstract

Colloidal Silver nanoparticles with a size of 5 nm produced by chemical reduction using poly ethylene glycol (PEG 200). Layers of silver nanoparticles and chitosan were deposited onto low density polyethylene (LDPE) substrate by layer by layer (LBL) self-assembly technique. Silver nanocomposite films were built by sequential dipping of LDPE film in either anionic silver nanoparticles or cationic chitosan. Silver nanoparticles and chitosan led to the formation of nanocomposite films possessing antimicrobial properties with the thickness of 2, 4, 8, 12 and 20 layers. Silver nanocomposite films were characterized by atomic force microscopy (AFM). Thermal, mechanical and barrier properties of LBL deposited nanocomposite films were investigated. Results showed that the LBL deposition of silver nanoparticles and chitosan increased the crystallinity of the composites and also improved mechanical and barrier properties of LDPE film significantly (p<0.05). Antimicrobial activity of silver nanocomposites against Escherichia coli and Staphylococcus aureus was evaluated. Growth kinetic parameters of E.coli and S.aureus affected by silver nanocomposites were calculated by modeling of absorbance data according to Gomperz equation. LDPE-silver nanocomposite affected bacterial growth parameters significantly (p<0.05). The specific growth rate reduced from 0.30 to 0.11 h-1 for E. coli and decreased 0.27 to 0.06 h-1 for S. aureus.


Download File

[img]
Preview
PDF (Abstract)
Physical and antimicrobial characterization of self assembled silver nanoparticlechitosan onto low density polyethylene film as active packaging polymer.pdf

Download (36kB) | Preview

Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Faculty of Food Science and Technology
DOI Number: https://doi.org/10.4028/www.scientific.net/JNanoR.27.53
Publisher: Trans Tech Publications
Keywords: Active polymer; Chitosan; Layer by layer deposition; Silver nanocomposite
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 10 Oct 2016 08:05
Last Modified: 10 Oct 2016 08:05
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.4028/www.scientific.net/JNanoR.27.53
URI: http://psasir.upm.edu.my/id/eprint/34914
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item