Remotely Self-Healable, Shapeable and pH-Sensitive Dual Cross-Linked Polysaccharide Hydrogels with Fast Response to Magnetic Field

Shibaev, Andrey V.; Smirnova, Maria E.; Kessel, Darya E.; Bedin, Sergey A.; Razumovskaya, Irina V.; Philippova, Olga E.

doi:10.3390/nano11051271

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Remotely Self-Healable, Shapeable and pH-Sensitive Dual Cross-Linked Polysaccharide Hydrogels with Fast Response to Magnetic Field

by

Andrey V. Shibaev

^1,*

,

Maria E. Smirnova

¹,

Darya E. Kessel

¹,

Sergey A. Bedin

²

,

Irina V. Razumovskaya

² and

Olga E. Philippova

¹

Physics Department, Lomonosov Moscow State University, 119991 Moscow, Russia

²

Institute of Physics, Technology and Informational Systems, Moscow Pedagogical State University, 119435 Moscow, Russia

^*

Author to whom correspondence should be addressed.

Nanomaterials 2021, 11(5), 1271; https://doi.org/10.3390/nano11051271

Submission received: 21 April 2021 / Revised: 7 May 2021 / Accepted: 9 May 2021 / Published: 12 May 2021

(This article belongs to the Special Issue Advanced Magnetic Nanocomposites: Structural, Physical Properties and Application)

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Abstract

The development of actuators with remote control is important for the construction of devices for soft robotics. The present paper describes a responsive hydrogel of nontoxic, biocompatible, and biodegradable polymer carboxymethyl hydroxypropyl guar with dynamic covalent cross-links and embedded cobalt ferrite nanoparticles. The nanoparticles significantly enhance the mechanical properties of the gel, acting as additional multifunctional non-covalent linkages between the polymer chains. High magnetization of the cobalt ferrite nanoparticles provides to the gel a strong responsiveness to the magnetic field, even at rather small content of nanoparticles. It is demonstrated that labile cross-links in the polymer matrix impart to the hydrogel the ability of self-healing and reshaping as well as a fast response to the magnetic field. In addition, the gel shows pronounced pH sensitivity due to pH-cleavable cross-links. The possibility to use the multiresponsive gel as a magnetic-field-triggered actuator is demonstrated.

Keywords: polymer hydrogel; self-healing; magnetic gel; actuator

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MDPI and ACS Style

Shibaev, A.V.; Smirnova, M.E.; Kessel, D.E.; Bedin, S.A.; Razumovskaya, I.V.; Philippova, O.E. Remotely Self-Healable, Shapeable and pH-Sensitive Dual Cross-Linked Polysaccharide Hydrogels with Fast Response to Magnetic Field. Nanomaterials 2021, 11, 1271. https://doi.org/10.3390/nano11051271

AMA Style

Shibaev AV, Smirnova ME, Kessel DE, Bedin SA, Razumovskaya IV, Philippova OE. Remotely Self-Healable, Shapeable and pH-Sensitive Dual Cross-Linked Polysaccharide Hydrogels with Fast Response to Magnetic Field. Nanomaterials. 2021; 11(5):1271. https://doi.org/10.3390/nano11051271

Chicago/Turabian Style

Shibaev, Andrey V., Maria E. Smirnova, Darya E. Kessel, Sergey A. Bedin, Irina V. Razumovskaya, and Olga E. Philippova. 2021. "Remotely Self-Healable, Shapeable and pH-Sensitive Dual Cross-Linked Polysaccharide Hydrogels with Fast Response to Magnetic Field" Nanomaterials 11, no. 5: 1271. https://doi.org/10.3390/nano11051271

APA Style

Shibaev, A. V., Smirnova, M. E., Kessel, D. E., Bedin, S. A., Razumovskaya, I. V., & Philippova, O. E. (2021). Remotely Self-Healable, Shapeable and pH-Sensitive Dual Cross-Linked Polysaccharide Hydrogels with Fast Response to Magnetic Field. Nanomaterials, 11(5), 1271. https://doi.org/10.3390/nano11051271

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Remotely Self-Healable, Shapeable and pH-Sensitive Dual Cross-Linked Polysaccharide Hydrogels with Fast Response to Magnetic Field

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