Affiliation:
1. Department of Applied Chemistry, Chaoyang University of Technology, No. 168, Jifeng E. Rd., Wufeng District, Taichung 41349, Taiwan
2. Department of Chemistry, Faculty of Mathematics and Natural Science, University of Mataram, Jalan Majapahit No.62, NTB 83115, Indonesia
Abstract
This study aims to determine the effectiveness of silver nanoparticles (Ag0-NPs) and silver oxide (Ag2O) as antibacterial agents against E. coli bacteria in PLA/PBS-D matrix. In addition, 10% of diatomite (D) was added to be the absorbent for Ag0-NPs. Synthesis of composites PLA/PBS-10D-Ag0NPs-1% and PLA/PBS-10D-Ag2O-1%-GPTS-3% was carried out where 3-glycidyloxypropyl-trimethoxysilane (GPTS) was used as the compatibilizer. The resulting composites were analyzed by IR, XRD, hardness, impact, tensile strength, and thermal properties. The antibacterial agent was obtained from Ag0-NPs, which impregnated into diatomite pores to form silver nanoparticle-diatomite (Ag0-NPsD). The XRD diffractograms showed peaks at 2[Formula: see text] 16.64[Formula: see text], 33.01[Formula: see text], 38.1[Formula: see text], and 44.38[Formula: see text] for PLA-PBS, Ag2O, and Ag0-NPs. Adding 10 phr of Ag0-NPsD, D and 3%-GPTS to the PLA-PBS system increased the hardness to 84.67 and 86.33, respectively. The impact strength of the composites increased significantly after the addition of 3% GPTS. The addition of Ag0-NPsD and 3%GPTS increased thermal properties of the composites. The antibacterial test results showed that the composite PLA/PBS-10D-Ag2O-1%-GPTS-3% was not effective as an antibacterial agent. In contrast, PLA/PBS-10D-Ag0 NPs-1% showed the ability to inhibit the E. Coli bacterial growth up to 99%. In the PLA/PBS-D system, Ag0-NPs are more effective for inhibiting the E. Coli bacterial growth than Ag2O.
Publisher
World Scientific Pub Co Pte Ltd
Subject
Condensed Matter Physics,Statistical and Nonlinear Physics
Cited by
2 articles.
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