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

Minghao Li; Jinhye Bae

doi:10.1039/C9PY01934K

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

Minghao Li

^a and Jinhye Bae

*^abc

Author affiliations

* Corresponding authors

^a Materials Science and Engineering Program, University of California San Diego, La Jolla, CA 92093, USA

^b Department of NanoEngineering, University of California San Diego, La Jolla, CA 92093, USA
E-mail: j3bae@ucsd.edu

^c Chemical Engineering Program, Department of Nanoengineering, University of California San Diego, La Jolla, CA 92093, USA

Abstract

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.

This article is part of the themed collection: Polymer Chemistry Emerging Investigators

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Article information

DOI: https://doi.org/10.1039/C9PY01934K
Article type: Communication
Submitted: 26 Dec 2019
Accepted: 01 Mar 2020
First published: 04 Mar 2020

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Polym. Chem., 2020,11, 2332-2338

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

M. Li and J. Bae, Polym. Chem., 2020, 11, 2332 DOI: 10.1039/C9PY01934K

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Polymer Chemistry

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

Abstract

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

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