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Smart Biopolymer Hydrogels Developments for Biotechnological Applications

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Cellulose-Based Superabsorbent Hydrogels

Abstract

Natural-based polyelectrolytes, especially polysaccharides, have received increasing attention in biomedical and pharmaceutical fields due to biodegradability, biocompatibility, natural abundance, unique chemical structures and physicochemical/biological properties, and the ability to form hydrogels. A class of hydrogel which changes its shape, surface characteristics, and solubility or undergoes formation of an intricate molecular self-assembly or phase or conformational transition with external stimuli, such as pH, temperature, ionic strength, solvent composition, the presence of salt ions, light, or electric field, is considered to be a “smart” hydrogel (also referred to as stimuli-responsive hydrogel). These kinds of hydrogels have been proposed for biotechnological applications, such as the delivery of therapeutic agents, tissue engineering, flow control, sensors/diagnostic devices, and actuators. Among these hydrogels, alginate and chitosan biopolymers have been categorized as pH-sensitive, temperature-sensitive, as well as dual pH- and temperature-responsive hydrogels and were discussed in this chapter.

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Correspondence to Mohamed S. Mohy Eldin .

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Omer, A.M., Tamer, T.M., Khalifa, R.E., Gaber, S.A., Mohy Eldin, M.S. (2019). Smart Biopolymer Hydrogels Developments for Biotechnological Applications. In: Mondal, M. (eds) Cellulose-Based Superabsorbent Hydrogels. Polymers and Polymeric Composites: A Reference Series. Springer, Cham. https://doi.org/10.1007/978-3-319-77830-3_50

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