Superporous IPN hydrogels having enhanced mechanical properties
نویسندگان
چکیده
منابع مشابه
Swelling and Mechanical Properties of Modified HEMA- based Superporous Hydrogels
Superporous hydrogels (SPHs), based on poly(2-hydroxyethyl methacrylate) (PHEMA), were prepared by adding minute amounts of an ioncomplexable hydrophilic acrylic acid. PHEMA SPHs are generally strong, but their swelling is minimal. To improve the swelling, different poly(HEMA-coacrylic acid) hydrogels were polymerized and crosslinked, then physically treated with divalent calcium and trivalent ...
متن کاملAdvances in superporous hydrogels.
Superporous hydrogels (SPHs) are different from superabsorbent polymers (SAPs) in that SPHs swell fast, within minutes, to the equilibrium swollen state regardless of their size. The fast swelling property is based on water absorption through open porous structure by capillary force. The poor mechanical strength of SPHs was overcome by developing the second-generation SPH composites (SPHCs) and...
متن کاملPore Structure of Superporous Hydrogels
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متن کاملBiodegradable HEMA-based hydrogels with enhanced mechanical properties.
Hydrogels are widely used in the biomedical field. Their main purposes are either to deliver biological active agents or to temporarily fill a defect until they degrade and are followed by new host tissue formation. However, for this latter application, biodegradable hydrogels are usually not capable to sustain any significant load. The development of biodegradable hydrogels presenting load-bea...
متن کاملRecent developments in superporous hydrogels.
Superporous hydrogels (SPHs) were originally developed as a novel drug delivery system to retain drugs in the gastric medium. These systems should instantly swell in the stomach and maintain their integrity in the harsh stomach environment, while releasing the pharmaceutical active ingredient. For years, the synthetic features and properties of these SPH materials have been modified and improve...
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ژورنال
عنوان ژورنال: AAPS PharmSciTech
سال: 2003
ISSN: 1530-9932
DOI: 10.1208/pt040451