Abstract
A new form of polymer blend, macroporous chitosan/poly(vinyl alcohol) (PVA) foams made by a starch expansion process, exhibits the functionalities of chitosan while avoiding its poor mechanical properties and chemical instabilities. The appropriate conditions for foaming are discussed using both insoluble and water-soluble chitosan. The chitosan/PVA foams demonstrated interconnected and open-cell structures with large pore size from tens to hundreds of micrometers and high porosities from 73.6 to 84.3%. Glutaraldehyde was employed to improve the retention of chitosan and copper adsorption of the chitosan/ PVA foams. While it increased the retention of chitosan and the adsorption capacities, glutaraldehyde decreased the pore size and porosity. The macroporous structure of the chitosan/PVA foams indicates extensive application prospects in terms of the considerable adsorption of heavy metal ions.
| Original language | English |
|---|---|
| Pages (from-to) | 1230-1235 |
| Number of pages | 6 |
| Journal | Polymer International |
| Volume | 55 |
| Issue number | 11 |
| DOIs | |
| State | Published - 2006.11 |
Keywords
- Adsorption
- Chitosan
- Foam
- Heavy metal
- Poly(vinyl alcohol)
Quacquarelli Symonds(QS) Subject Topics
- Materials Science
- Engineering - Petroleum
- Chemistry
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