Emulsion pathway for gelatin cross-linking

✍ Scribed by G. Xu; E. Ruckenstein

• Book ID: 102736842
• Publisher: John Wiley and Sons
• Year: 1993
• Tongue: English
• Weight: 1007 KB
• Volume: 47
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1993.070470804

✦ Synopsis

A new method for gelatin cross-linking is suggested that starts with the generation of an emulsion between an aqueous solution containing gelatin and a surfactant, and a monomer (MMA) that contains an initiator ( AIBN) . The emulsion is prepared at 50°C under intense stirring, but is brought, subsequently, to room temperature. There are conditions under which the gellike emulsions thus obtained are transparent and extremely stable at room temperature. A slow cross-linking reaction occurs in the latter gels that leads to a material that is insoluble in water. The swelling of this material in water, which is very large after 5 days, reduces appreciably after 25 days of reaction. The cross-linking occurs only when MMA contains the initiator.