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ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 2016,Vol.32>> Issue(11)>> 2761-2768     doi: 10.3866/PKU.WHXB201608261         中文摘要
Double-Network Hydrogel Consisting of Nano Na-Montmorillonite with Enhanced Mechanical and Antimicrobial Properties
LI Ting, XIANG Shuang-Fei, DONG Wei-Fu, MA Pi-Ming, SHI Dong-Jian, CHEN Ming-Qing
School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, Jiangsu Province, P. R. China
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(3-Acrylamidopropyl)trimethylammonium chloride (ATC), acrylamide and montmorillonite (MMT) without organic modification were synthesized through free radical polymerization to strengthen the mechanical properties of hydrogels. MMT platelets were considered as chemical "plane" cross-linkers different from "point" cross-linkers because of the cation-exchange reaction between MMT and ATC (cationic monomer) during the synthesis of hydrogels, while a double network was used to improve the mechanical properties of the hydrogels. Investigations of compressive and tensile properties indicated that compressive modulus and stress, fracture stress, ultimate strain and Young's modulus were significantly improved in the presence of MMT. The mechanical properties of double-network hydrogels improved with increasing monomer concentration of the first network. Scanning electron microscopy (SEM) revealed that large quantities of micro-network structures were located in the pores and the formation of embedded micro-network structures led to an increase in the compressive strength and toughness. Moreover, the gels with ATC exhibited good antibacterial effects against E. coli and S. aureus. These developments provide a new route to prepare hydrogels with high mechanical properties.



Keywords: Montmorillonite   Nanocomposite hydrogel   Double-network   Mechanical property   Antibacterial property  
Received: 2016-06-29 Accepted: 2016-08-26 Publication Date (Web): 2016-08-26
Corresponding Authors: CHEN Ming-Qing Email: mq-chen@jiangnan.edu.cn

Fund: The project was supported by the National Natural Science Foundation of China (51373070), Research Project of Chinese Ministry of Education, China (113034A), and Fundamental Research Funds for the Central Universities, China (JUSRP51624A).

Cite this article: LI Ting, XIANG Shuang-Fei, DONG Wei-Fu, MA Pi-Ming, SHI Dong-Jian, CHEN Ming-Qing. Double-Network Hydrogel Consisting of Nano Na-Montmorillonite with Enhanced Mechanical and Antimicrobial Properties[J]. Acta Phys. -Chim. Sin., 2016,32 (11): 2761-2768.    doi: 10.3866/PKU.WHXB201608261

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