Tunable swelling and deswelling of temperature- and light-responsive graphene oxide-poly(N-isopropylacrylamide) composite hydrogels,Polymer Chemistry

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Tunable swelling and deswelling of temperature- and light-responsive graphene oxide-poly(N-isopropylacrylamide) composite hydrogels
Polymer Chemistry ( IF 4.1 ) Pub Date : 2020/03/04 , DOI: 10.1039/c9py01934k
Minghao Li _{1,

2,

3,

4} , Jinhye Bae _{1,

2,

3,

4,

5}

Affiliation

Tunable swelling and deswelling behaviors of graphene oxide-poly(N-isopropylacrylamide) (GO-PNIPAM) composite hydrogels are demonstrated by controlling the internal microstructures and the rate of the external temperature change. The different internal microstructures of GO-PNIPAM composite hydrogels as a function of concentrations of GO and chemical crosslinkers explain their different swelling and deswelling ratios. Furthermore, the light-driven shape deformation of GO-PNIPAM is demonstrated by utilizing the photothermal properties of GO. This approach offers promise for light and temperature-responsive actuators and sensors, and biomedical applications.

中文翻译：

温度和光响应性氧化石墨烯-聚（N-异丙基丙烯酰胺）复合水凝胶的可调溶胀和溶胀

通过控制内部微观结构和外部温度变化率，证明了氧化石墨烯-聚（N-异丙基丙烯酰胺）（GO-PNIPAM）复合水凝胶的可溶胀和溶胀行为。GO-PNIPAM复合水凝胶的不同内部微观结构随GO和化学交联剂浓度的变化而变化，说明了它们的溶胀和溶胀比不同。此外，通过利用GO的光热性质证明了GO-PNIPAM的光驱动形状变形。这种方法为光敏和温度敏感的执行器和传感器以及生物医学应用提供了希望。

更新日期：2020-03-31

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