A Novel Nanocomposite Hydrogel with Precisely Tunable UCST and LCST

descriptionPublicationkeyboard_double_arrow_right Article 22 Jan 2015 English Publisher:WileyJournal:Macromolecular Rapid Communications, volume 36, pages 477-482 (issn: 1022-1336, eissn: 1521-3927,

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Authors: Mengge, Xia; Yanhua, Cheng; Zhouqi, Meng; Xiaoze, Jiang; Zhigang, Chen; Patrick, Theato; Meifang, Zhu;

doi: 10.1002/marc.201400665

pmid: 25611464

A Novel Nanocomposite Hydrogel with Precisely Tunable UCST and LCST

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Abstract

Novel thermosensitive nanocomposite (NC) hydrogels consisting of organic/inorganic networks are prepared via in situ free radical polymerization of 2‐(2‐methoxyethoxy) ethyl methacrylate (MEO2MA) and oligo(ethylene glycol) methacrylate (OEGMA) in the presence of inorganic cross‐linker clay in aqueous solution. The obtained clay/P(MEO2MA‐co‐OEGMA) hydrogels exhibit double volume phase transition temperatures, an upper critical solution temperature (UCST), and a lower critical solution temperature (LCST), which can be controlled between 5 and 85 °C by varying the fraction of OEGMA units and the weight percentage of cross‐linker clay. These new types of NC hydrogels with excellent reversible thermosensitivity are promising for temperature‐sensitive applications such as smart optical switches. image

Related Organizations

Universität Hamburg
Germany
Donghua University
China (People's Republic of)
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
China (People's Republic of)

Keywords

Free Radicals, Polymers, Temperature, Hydrogels, Phase Transition, Nanocomposites, Polymerization, Solutions, Clay, Methacrylates, Aluminum Silicates

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