01286naa a2200205 a 450000100080000000500110000800800410001910000180006024500750007826000090015352005080016265000130067065000130068365300080069665300210070470000200072570000240074570000250076977302860079410297552006-03-28       1999    bl ---       0--  u    #d1 aVIEIRA, D. C.  aPore-size estimation of chitosan thin-film by atomoc force microscopy.  c1999  aChitosan (CHI) is a polysaccharide derived from chitin, the second most abundant renewable organic compound on earth next to cellulose. Chitin found in crustacean shells, insect exoskeletons and plankton, and when deacetylated (which attain around 80% of the units) generates the chitosan. CHI is composed primarily of repeating units of beta (1-4) 2-amino-2-deoxy-D-glucose (or D-glucosamine) whose structure is similar to cellulose with the hydroxy groups in position 2 replaced by acetylamino groups.  achitosan  aCelulose  aCHI  aPolissacarídeos1 aASSIS, O. B. G.1 aBERNARDES-FILHO, R.1 aCAMPANA-FILHO, S. P.  tActa Microscopica, Rio de Janeirogv.8, p. 317-318, Oct. 1999. Supplement A. Edição de Proceedings of the XVII Congress of the Brazilian Society for Microscopy and Microanalysis; X Congress of the Brazilian Society for Cell Biology held in Santos-SP, October 13-16, 1999. Resumo.