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Studies on properties of rice straw/polymer nanocomposites based on polycaprolactone and Fe₃O₄ nanoparticles and evaluation of antibacterial activity


Citation

Khandanlou, Roshanak and Ahmad @ Ayob, Mansor and Shameli, Kamyar and Saki, Elnaz and Kalantari, Katayoon (2014) Studies on properties of rice straw/polymer nanocomposites based on polycaprolactone and Fe₃O₄ nanoparticles and evaluation of antibacterial activity. International Journal of Molecular Sciences, 15 (10). pp. 18466-18483. ISSN 1422-0067

Abstract

Modified rice straw/Fe3O4/polycaprolactone nanocomposites (ORS/Fe3O4/ PCL-NCs) have been prepared for the first time using a solution casting method. The RS/Fe3O4-NCs were modified with octadecylamine (ODA) as an organic modifier. The prepared NCs were characterized by using X-ray powder diffraction (XRD), Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), Thermogravimetric analysis (TGA) and Fourier transform infrared spectroscopy (FT-IR). The XRD results showed that as the intensity of the peaks decreased with the increase of ORS/Fe3O4-NCs content in comparison with PCL peaks, the Fe3O4-NPs peaks increased from 1.0 to 60.0 wt. %. The TEM and SEM results showed a good dispersion of ORS/Fe3O4-NCs in the PCL matrix and the spherical shape of the NPs. The TGA analysis indicated thermal stability of ORS/Fe3O4-NCs increased after incorporation with PCL but the thermal stability of ORS/Fe3O4/PCL-NCs decreased with the increase of ORS/Fe3O4-NCs content. Tensile strength was improved with the addition of 5.0 wt. % of ORS/Fe3O4-NCs. The antibacterial activities of the ORS/Fe3O4/PCL-NC films were examined against Gram-negative bacteria (Escherichia coli) and Gram-positive bacteria (Staphylococcus aureus) by diffusion method using nutrient agar. The results indicated that ORS/Fe3O4/PCL-NC films possessed a strong antibacterial activity with the increase in the percentage of ORS/Fe3O4-NCs in the PCL.


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Official URL or Download Paper: http://www.mdpi.com/1422-0067/15/10/18466

Additional Metadata

Item Type: Article
Divisions: Faculty of Medicine and Health Science
Faculty of Science
DOI Number: https://doi.org/10.3390/ijms151018466
Publisher: MDPI AG
Keywords: Polycaprolactone; Rice straw/Fe3O4 nanocomposites; X-ray powder diffraction; Scanning and transmission electron microscopy; Antibacterial activity
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 11 Jan 2016 05:03
Last Modified: 11 Oct 2018 03:44
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.3390/ijms151018466
URI: http://psasir.upm.edu.my/id/eprint/35504
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