# SWELLING BEHAVIOR STUDY OF PHYSICALLY CROSSLINKED GELATIN HYDROGELS

> Title: SWELLING BEHAVIOR STUDY OF PHYSICALLY CROSSLINKED GELATIN HYDROGELS Page Range: p.53-58 Author(s): Congde Qiao; Xiaolu Cao; Fei Wang File size: 217K Download the pdf (subscribers only) Buy the pdf (non-subscribers) Journal: Polymers and Polymer Composites Issue Year: ppc Volume: 20 Issue...

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Published: 2012-01-01T00:00:00+00:00
Categories: Polymers and Polymer Composites

**Title: SWELLING BEHAVIOR STUDY OF PHYSICALLY CROSSLINKED GELATIN HYDROGELS**
 Page Range: p.53-58
 Author(s): Congde Qiao; Xiaolu Cao; Fei Wang
 File size: 217K
 ![](http://dload.gif) [Download the pdf](http://journals.asp?Page=111&JournalDownload=ON&JournalType=ppc&JournalIssue=ppc20-1-2&JournalID=101539&JIP=) (subscribers only)
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 Journal: Polymers and Polymer Composites
 Issue Year: ppc
 Volume: 20
 Issue No: No.1-2

**Abstract**
 A series of physically crosslinked gelatin networks were prepared and the effects of salt, pH, temperature and polymer concentration on the swelling properties of gelatin hydrogels were studied in detail. The swelling equilibrium of the gelatin networks can be described as a simple superposition of polyelectrolyte behaviour and polyampholyte behaviour. It was found that high temperature, low gelatin concentration and deviation from the isoelectric point can promote the swelling of the polymer networks. Moreover, the swelling kinetics of gelatin hydrogels at different salt concentration solutions was also investigated. It is found that the rate of swelling of gelatin could be described by a second-order rate equation, which indicated that the structure of the gelatin networks is homogenous. 18 Refs.

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