Issue 31, 2017, Issue in Progress
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RSC Advances

Continuous fabrication of multi-stimuli responsive graphene oxide composite hydrogel fibres by microfluidics†

Li Peng,a   Yan Liu, ORCID logo ab   Jinghua Gong,a   Kaihuan Zhang ORCID logo *b  and  Jinghong Ma ORCID logo *a  

* Corresponding authors

a State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai, China
E-mail: mjh68@dhu.edu.cn

b Materials Science and Technology of Polymers, MESA+ Institute of Nanotechnology, University of Twente, P. O. Box 217, 7500 AE Enschede, The Netherlands
E-mail: k.zhang-1@utwente.nl

Abstract

Microfluidics appeared in the 1990s as a promising technology and has received considerable attention in developing stimuli-responsive hydrogel fibres in microscale for tissue engineering and actuation devices. In this work, thermo- and electro-responsive graphene oxide/poly(N-isopropylacrylamide)/sodium alginate (GO/PNIPAM/SA) hydrogel fibres were prepared via microfluidics and off-chip free radical polymerization. The composite hydrogel fibres were characterised using FTIR, SEM, and DSC. The thermo-triggered volume-phase transition and electrically triggered bending behaviours were also investigated. The results show that the hydrogel fibres have porous internal structures and the pore size becomes smaller with the increase of GO content due to the hydrogen bonding between the amide groups of PNIPAM chains and oxygen-containing groups on the GO nanosheets. Besides this, the incorporation of increased GO content enlarges the swelling ratio of the hydrogel fibre. The hydrogel fibres also exhibit bending behaviour under the non-contact direct current electric field.

Graphical abstract: Continuous fabrication of multi-stimuli responsive graphene oxide composite hydrogel fibres by microfluidics

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Article information

DOI
https://doi.org/10.1039/C7RA01750B
Article type
Paper
Submitted
12 Feb 2017
Accepted
25 Mar 2017
First published
31 Mar 2017
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2017,7, 19243-19249

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Continuous fabrication of multi-stimuli responsive graphene oxide composite hydrogel fibres by microfluidics

L. Peng, Y. Liu, J. Gong, K. Zhang and J. Ma, RSC Adv., 2017, 7, 19243 DOI: 10.1039/C7RA01750B

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