Preparation and characterization of maleimide-polystyrene/SiO2-Al2O3 hybrid nanocomposites by an in situ sol-gel process and its antimicrobial activity

Ramesh S.; Sivasamy A.; Rhee K. Y.; Park S. J.; Hui D.

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Preparation and characterization of maleimide-polystyrene/SiO2-Al2O3 hybrid nanocomposites by an in situ sol-gel process and its antimicrobial activity

机译：马来酰亚胺-聚苯乙烯/ SiO2-Al2O3杂化纳米复合材料的原位溶胶-凝胶法制备，表征及其抗菌活性

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Inorganic-organic nanocomposites have unlocked new opportunities in the design of innovative materials and compounds with enhanced and unique properties, based on soft chemistry. In the present study, a hybrid nanocomposite of maleimide-polystyrene (PSMA) with SiO2 and Al2O3 (PSMA-SA) was synthesized by means of the sol-gel approach in the presence of gamma-aminotriethoxysilane (gamma-APTES), in which tetraethoxysilane (TEOS) and aluminum isopropoxide (AIP) were used as precursors. The Michael reaction led to bonding between the PSMA and SiO2-Al2O3, giving a stable cross-linked network that prevented aggregation and mechanical mixing of the nanoparticles. XRD and FTIR analysis confirmed the effects of the coupling agent in promoting the Michael reaction. Thermal properties of the hybrid nanocomposites were tested through TGA and DSC. SEM, TEM and optical tests confirmed the controlled morphology and optical transparency of the composites. Additionally, the hybrid nanocomposites showed excellent solvent resistance and antimicrobial activity against pathogenic bacteria such as Bacillus cereus and Escherichia coli. (C) 2015 Elsevier Ltd. All rights reserved.

机译：无机-有机纳米复合材料为基于软化学的具有增强和独特性能的创新材料和化合物的设计带来了新的机遇。在本研究中，在存在γ-氨基三乙氧基硅烷（γ-APTES）的情况下，通过溶胶-凝胶法合成了马来酰亚胺-聚苯乙烯（PSMA）与SiO2和Al2O3的杂化纳米复合材料（PSMA-SA），其中四乙氧基硅烷（TEOS）和异丙醇铝（AIP）被用作前体。迈克尔反应导致PSMA与SiO2-Al2O3之间的键合，形成稳定的交联网络，从而防止了纳米粒子的聚集和机械混合。 XRD和FTIR分析证实了偶联剂在促进迈克尔反应中的作用。通过TGA和DSC测试了杂化纳米复合材料的热性能。 SEM，TEM和光学测试证实了复合材料具有受控的形态和光学透明性。另外，杂化纳米复合材料显示出优异的耐溶剂性和对诸如蜡样芽孢杆菌和大肠杆菌的病原菌的抗菌活性。（C）2015 Elsevier Ltd.保留所有权利。

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来源
《Composites》 |2015年第6期|167-175|共9页
作者
Ramesh S.; Sivasamy A.; Rhee K. Y.; Park S. J.; Hui D.;
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作者单位

Cent Leather Res Inst, Chem Engn Area, Madras 20, Tamil Nadu, India;

Cent Leather Res Inst, Chem Engn Area, Madras 20, Tamil Nadu, India;

Kyung Hee Univ, Dept Mech Engn, Yongin 449701, South Korea;

Inha Univ, Dept Chem, Inchon 402701, South Korea;

Univ New Orleans, Dept Mech Engn, New Orleans, LA 70148 USA;

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正文语种 eng
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关键词
Polymer-matrix composites (PMCs); Chemical analysis; Electron microscopy; Thermal analysis;

机译：聚合物基复合材料（PMC）;化学分析;电子显微镜;热分析;

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Preparation and characterization of maleimide-polystyrene/SiO2-Al2O3 hybrid nanocomposites by an in situ sol-gel process and its antimicrobial activity

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