Abstract
A new generation of biomaterials composed of the natural polysaccharides, ulvans extracted from the green seaweed Ulva rigida and chitosan have been investigated. Ulvan, chitosan alone and ulvan/chitosan polyelectrolyte membranes have been synthesised and characterised. The structure of the membranes was altered by the weight ratio of the polyion components. Fibrous and nanofibrous morphology was created, in accordance with a supramolecular self assembly. ATR-FTIR measurements suggested the presence of both polycationic chitosan and polyanionic ulvan in the polyelectrolyte membranes. The cytocompatibility of these new materials was examined by fluorescence microscopy. The results show that ulvan as well as ulvan/chitosan membranes promoted the attachment and proliferation of 7F2 osteoblasts and maintained the cell morphology and viability. Thus, ulvan and chitosan which possess unique properties might have high impact in biomedical applications as potential scaffold materials.
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