Silver-embedded modified hyperbranched epoxy/clay nanocomposites as antibacterial materials

被引：49

作者：

Roy, Buddhadeb ^{[1
]}

Bharali, Pranjal ^{[2
]}

Konwar, B. K. ^{[2
]}

Karak, Niranjan ^{[1
]}

机构：

[1] Tezpur Univ, Dept Chem Sci, Adv Polymer & Nanomat Lab, Tezpur, India

[2] Tezpur Univ, Dept Mol Biol & Biotechnol, Tezpur, India

来源：

BIORESOURCE TECHNOLOGY | 2013年 / 127卷

关键词：

Silver-embedded clay; Antibacterial; Hyperbranched epoxy; Nanocomposites; RESIN; NANOPARTICLES; POLYURETHANE; STABILITY; STRENGTH; BLENDS; CLAY;

D O I：

10.1016/j.biortech.2012.09.129

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Silver-embedded modified hyperbranched epoxy/clay nanocomposites were prepared at different wt.% of octadecyl amine-modified montmorillonite at a constant silver concentration (1 wt.%). UV-visible, XRD and TEM studies confirmed the formation of silver nanoparticles. Compared to the system without silver and clay, the gloss from 70 degrees to 94 degrees, scratch hardness from 4 to 5.8 kg, impact strength from 60 to 90 cm, tensile strength from 8.5 to 15.5 MPa, adhesive strength from 5 to 7.1 x 10(9) N/m, flexibility from >6 to <4 mm, and thermostability from 230 to 260 degrees C increased for the modified system. Resistance to aqueous 10% HCl, 0.5% NaOH, 10% NaCl also increased. The nanocomposites showed antibacterial activity in well diffusion assays against Staphylococcus aureus (ATCC11632), Bacillus subtilis (ATCC11774), Escherichia coli (MTCC40). Pseudomonas aeruginosa (MTCC7814) and Klebsiella pneumoniae (ATCC10031). The results showed that these nanocomposites have potential to be used as antimicrobial materials. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：175 / 180

页数：6

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