Hydrogels
7/26/2008
The hydrogel is soft, solid-like material consisting of a network of insoluble polymer chains in water. The can contain over 99% water and can be formed from natural or synthetic polymers. Because of their high water content, they behave much like living cells The common desert. Jello is a very good example of a hydrogel.
RDC 6/12/2008
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“Hydrogels may be uncrosslinked or crosslinked. Uncrosslinked hydrogels are able to absorb water but do not dissolve due to the presence of hydrophobic and hydrophilic regions. Covalently crosslinked networks of hydrophilic polymers, including water soluble polymers, are traditionally denoted as hydrogels in the hydrated state.”
Sawhney, US Patent 7,413,752 (8/19/2008) [9/6/2008]
Polyethylene Oxide (PEO) Hydrogels
Protein
/Polypeptide Hydrogels
Superabsorbent Hydrogels
Warning: Sometimes the older links no longer work. Go to the US Patent number search page, copy the Patent number into the search box and search. For the articles, use your browser to go the Journal site.
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Notes
Applications:
tissue engineering scaffolds
controlled release systems
sorbents
biosensors
disposable diapers
contact lenses
medical electrodes
explosives
breast implants
moisture absorbents in soil
bandages
Common hydrogel polymers include polyvinyl alcohol, acrylate polymers and
copolymers. Natural hydrogels are agarose, methylcellulose and hylaronan. (RDC
6/12/2008)
(Wikipedia:
http://en.wikipedia.org/wiki/Gel)
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“Hydrophilic polymeric materials suitable for use in forming hydrogels include poly(hydroxyalkyl methacrylate), poly(electrolyte complexes), poly(vinylacetate) cross-linked with hydrolyzable bonds, water-swellable N-vinyl lactams polysaccharides, natural gum, agar, agarose, sodium alginate, carrageenan, fucoidan, furcellaran, laminaran, hypnea, eucheuma, gum arabic, gum ghatti, gum karaya, gum tragacanth, locust beam gum, arabinogalactan, pectin, amylopectin, gelatin, hydrophilic colloids such as carboxymethyl cellulose gum or alginate gum crosslinked with a polyol such as propylene glycol, and the like.”
Sawhney, US Patent 7,413,752 (8/19/2008) [9/6/2008]
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Review Articles
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US Patents
11/4/2008
7,445,812
Process for making water-swellable material comprising coated water-swellable
polymers
9/2/2008
7,420,013
Mixtures
of compounds comprising at least two double bonds and use thereof
8/26/2008
7,417,101
Thermo-responsive water-soluble polymers for viscosity switch
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Journal Articles
2/13/209
Effect of Pore-Forming Agent Type on Swelling Properties of Macroporous Poly(N-[3-(dimethylaminopropyl)]-methacrylamide-co-acrylamide)
Hydrogels
(58 – 64) Journal
of Macromolecular Science Part A - Pure and Applied Chemistry 46 #1 (2009)Authors:
G
k
en
Birlik Demirel; Tuncer Caykara; Melike Demiray; Metin G
r
Radiation Synthesis and Characterization of Polyvinyl Alcohol/Methacrylic
Acid-Gelatin Hydrogel for Vitro Drug Delivery
(170 – 178)
Journal of Macromolecular Science Part A - Pure and Applied Chemistry 46 #2
(2009)
1/23/2009
Calcite Growth in Hydrogels: Assessing the
Mechanism of Polymer-Network Incorporation into Single Crystals
(p 470-473)
Advanced Materials 21 #4 (2009)
Abstract
Synthesis and water absorbency of polyampholytic
hydrogels with antibacterial activity
(p 439-446)
Journal of Applied Polymer Science 112 #1 (2009)
Abstract
Effect of solvent state and isothermal conditions on gelation of methylcellulose
hydrogels
(1611-1623)
Journal of Biomaterials Science. Polymer Edition 19 #12 (2008)
Electron spin resonance studies of the effects of
sterilization on poly(ethylene glycol) hydrogels
(p 409-418)
Journal of Biomedical Materials Research 88A #2 (2009)
Abstract
1/16/2008
Iron Tris(bipyridine) PEG Hydrogels with Covalent and Metal Coordinate
Cross-Links
(128–133)
Biomacromolecules 10 #1 (2009)
1/9/2009
In situ steady state fluorescence (SSF) technique to study drying of PAAm
hydrogels made of various cross-linker contents
(600-605)
Chemical Engineering and Processing 48, #2 (2009)
11/21/2008
Temperature responsive pore-filled membranes
based on a BSA/poly(N-isopropylacrylamide) hydrogel
(p 27-34)
Advances in Polymer Technology 27 #1 (2008)
Abstract
Modeling the effect of environmental solution pH on the mechanical
characteristics of glucose-sensitive hydrogels
(690-700)
Biomaterials 30 #4 (2009)
Cell adhesive hydrogels synthesised by copolymerisation of arg-protected
Gly-Arg-Gly-Asp-Ser methacrylate monomers and enzymatic deprotection
(5951 - 5953)
Chemical Communications #45 (2008)
Preparation of comb-type grafted hydrogels
composed of polyacrylamide and chitosan and their use for DNA adsorption
(p 1862-1868)
Journal of Applied Polymer Science 111 #4 (2009)
Abstract
11/7/2008
Synthesis and characteristic of the thermo- and pH-sensitive hydrogel and
microporous hydrogel induced by the NP-10 aqueous two-phase system
(3688-3699)
European Polymer Journal 44 #11 (2008)
In situ formation of hydrogels as vitreous
substitutes: Viscoelastic comparison to porcine vitreous
(p 656-665)
Journal of Biomedical Materials Research 87A #3 (2008)
Abstract
10/31/1008
Hydrogel based tissue
mimicking phantom for in-vitro ultrasound contrast agents studies
(p 338-345)
Journal of Biomedical Materials Research 87B #2 (2008)
Abstract
10/3/2008
Undesirable effects of heating on hydrogels
(p 3420-3430)
Journal of Applied Polymer Science 110 #6 (2008)
Abstract
9/19/2008
Facile fabrication of conducting polymer hydrogels via supramolecular
self-assembly
(4279 – 4281)
Chemical Communications #36 (2008)
9/5/2008
101[2008] Modelling leading to water entrapment point
in thermally driven hydrogelation of methyl cellulose
e-Polymers (9/5/2008) (117)
[Abstract]
8/22/2008
Thermoresponsive Hydrogel Photonic Crystals by Three-Dimensional Holographic
Lithography
(p 3061-3065)
Advanced Materials 20 #16 (2008)
Abstract
7/25/2008
Preparation of Homogeneous Hydrogels by Controlling the Crosslinker
Reactivity and Availability
(769 – 775)
Journal of Macromolecular Science Part A - Pure and Applied Chemistry 45 #9
(2008)
Anions bonded on the supramolecular hydrogel surface as the growth center of
biominerals
(84-89)
Colloids and Surfaces B: Biointerfaces 66 #1 (2008)
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Roger D. Corneliussen
Editor
Telephone: 610 883 0055
rcorneliussen@4spe.org
www.maropolymeronline.com
Copyright 2009 by Roger D. Corneliussen