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Smart Biopolymer Hydrogels Developments for Biotechnological Applications

  • Ahmed M. Omer
  • Tamer M. Tamer
  • Randa E. Khalifa
  • Samar A. Gaber
  • Mohamed S. Mohy Eldin
Living reference work entry
Part of the Polymers and Polymeric Composites: A Reference Series book series (POPOC)

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.

Keywords

Biopolymer Smart hydrogel Alginate Chitosan pH sensitivity Temperature sensitivity 

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Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Ahmed M. Omer
    • 1
  • Tamer M. Tamer
    • 1
  • Randa E. Khalifa
    • 1
  • Samar A. Gaber
    • 1
  • Mohamed S. Mohy Eldin
    • 1
  1. 1.Polymer Materials Research DepartmentAdvanced Technology and New Materials Research Institute (ATNMRI), City of Scientific Research and Technological Applications (SRTA-City)AlexandriaEgypt

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