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Read e-book online Biomedical Applications of Hydrogels Handbook PDF

By Hossein Omidian, Kinam Park (auth.), Raphael M. Ottenbrite, Kinam Park, Teruo Okano (eds.)

ISBN-10: 1441959181

ISBN-13: 9781441959188

ISBN-10: 144195919X

ISBN-13: 9781441959195

Hydrogels are networks of polymer chains that can produce a colloidal gel containing over ninety nine in keeping with cent water. The superabsorbency and permeability of clearly happening and artificial hydrogels provide this type of fabrics an grand array of makes use of. those makes use of diversity from wound dressings and pores and skin grafts to oxygen-permeable touch lenses to biodegradable supply structures for medications or insecticides and scaffolds for tissue engineering and regenerative drugs. Biomedical purposes of Hydrogels Handbook offers a entire description of this diversified category of fabrics, overlaying either synthesis and houses and a wide variety of analysis and advertisement purposes. The guide is split into 4 sections: Stimuli-Sensitive Hydrogels, Hydrogels for Drug supply, Hydrogels for Tissue Engineering, and Hydrogels with distinctive Properties.

Key beneficial properties:

  • Provides finished assurance of the elemental technology and functions of a various category of materials
  • Includes either evidently happening and artificial hydrogels
  • Edited and written by means of all over the world leaders within the field

Editorial Advisory Board:

Nicholas A. Peppas,Chair (The college of Texas at Austin)

Allan Hoffman (University of Washington)

Emo Chiellini (University of Pisa)

Fu-Zhai Cui (Tsinghua University)

Karel Dusek (Academy of Sciences of the Czech Republic)

Jindrich Kopecek (University of Utah)

Claudio Migliaresi (University of Trento)

Yoshihito Osada (Hokkaido University)

Buddy D. Ratner (University of Washington)

Nathan Ravi (Washington collage in St. Louis)

Etienne Schacht (Ghent University)

Tianwei Tan (Bejing college of Chemical Technology)

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Extra info for Biomedical Applications of Hydrogels Handbook

Example text

0, in response to external glucose concentration (bottom). The gels operate at physiological pH bearing phenylborate derivatives as a glucose-sensing moiety [30]. There are many other self-regulated DDS that response to pH, electrical, magnetic changes [31–33]. Intelligent Surfaces for Bioseparation These self-regulated DDS utilize changes in permeability or diffusivity of the gels by structural changes that accompany swelling and deswelling changes. New modulation systems, to control the surface properties or solubility of materials in response to an external signal, are designed with the stimuli-responsive polymers on a material surface, or by modifying the surface with bioactive substances, such as enzyme.

A weak hydrogels in its fully swollen state under mild stress can also break apart into smaller swollen particles. These smaller particles increase the contact area of the swollen hydrogels with the surrounding dry environment and causing faster desorption. The desorption in hydrogels is dependent on many factors. Desorption similar to the absorption process is a diffusion process. Therefore, depending on how wet the surrounding environment is, the desorption process takes place at a slow or fast rate.

The temperature-responsive polymer poly(N-isopropylacrylamide) (PIPAAm) exhibits a transition from hydrophobic to hydrophilic across its lower critical solution temperature (LCST) of 32°C. After electron-beam polymerization and grafting to normal tissue-culture polystyrene (TCPS) dishes, temperature-responsive culture surfaces can be produced. The noninvasive harvest of various cell types as intact sheets, along with deposited extracellular matrix, can be achieved by reducing the culture temperature.

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Biomedical Applications of Hydrogels Handbook by Hossein Omidian, Kinam Park (auth.), Raphael M. Ottenbrite, Kinam Park, Teruo Okano (eds.)

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