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A Novel NIR Laser Switched Nanocomposite Hydrogel as Remote Stimuli Smart Valve
Author(s) -
Hou Kai,
Wu Weijie,
Xia Mengge,
Zhu Meifang
Publication year - 2017
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201700213
Subject(s) - materials science , self healing hydrogels , nanocomposite , photothermal therapy , photothermal effect , laser , near infrared spectroscopy , smart material , biomaterial , nanotechnology , nanoparticle , polymer chemistry , optics , physics
Thermosensitive nanocomposite (NC) hydrogels are considered as a significant kind of intelligent material to be utilized as sensor, biomaterial, drug carrier, etc. Recently, preparation of remotely controlled NC hydrogel with high‐performance attracts more and more concern. To produce facile remote‐stimuli thermosensitive NC hydrogel, a novel near‐infrared (NIR) laser switched CuS/clay/poly(OEGMA‐ co ‐MEO 2 MA) hydrogel is demonstrated, which can be precisely remote‐stimulated by NIR irradiation based on the excellent NIR photothermal conversion property of CuS nanoparticle. The temperature change of hydrogel is related to the NIR intensity, CuS content, and crosslinking density. Moreover, the influences on dimensional variation of hydrogel on macroscale are systematically studied, and the hydrogel as smart liquid valve is further utilized which can be remotely controlled by NIR switch on/off successfully. Cyclic test illustrates that this novel CuS/clay/poly(OEGMA‐ co ‐MEO 2 MA) hydrogel exhibits stable cyclic volume transition property which has promising applications in the areas of sensors, valves, and intelligent switches.