Brandl, Ferdinand and Henke, Matthias and Rothschenk, Stefan and Gschwind, Ruth and Breunig, Miriam and Blunk, Torsten and Tessmar, Joerg and Goepferich, Achim (2007) Poly(ethylene glycol) based hydrogels for intraocular applications. ADVANCED ENGINEERING MATERIALS, 9 (12). pp. 1141-1149. ISSN 1438-1656,
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Hydrogels are attractive materials for biomedical applications due to their versatility and excellent biocompatibility. In this study, we report the preparation of poly(ethylene glycol) (PEG) based hydrogels for intraocular applications. We synthesized branched PEG-succinimidyl propionates (10 kDa molecular weight) and different types of PEG-amines (linear and branched, 2 and 10 kDa molecular weight). Transparent hydrogels were formed in situ upon chemical reaction of these macromers. The gels were characterized by oscillatory rheometry and NMR experiments. By varying the concentration of macromers, the functionality of the PEG-amine, and the conditions during cross-linking, gels with adequate gelation times of approx 5-10 min and gel strengths of approx 350-1500 Pa were obtained. The crosslinked hydrogels showed no cytotoxic effects and may be used as vitreous substitutes or intraocular drug release systems.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MICHAEL-TYPE ADDITION; BEHAVIOR; CULTURE; DESIGN; BIOMATERIALS; SUBSTITUTES; POLYMERS; DELIVERY; MATRICES; DISEASES; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences 600 Technology > 615 Pharmacy |
| Divisions: | Chemistry and Pharmacy > Institute of Pharmacy > Pharmaceutical Technology (Prof. Göpferich) Chemistry and Pharmacy > Institut für Organische Chemie > Arbeitskreis Prof. Dr. Ruth Gschwind |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 Nov 2020 08:04 |
| Last Modified: | 25 Nov 2020 08:04 |
| URI: | https://pred.uni-regensburg.de/id/eprint/31816 |
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