RT Journal Article
T1 Chitosan hydrophobic domains are favoured at low degree of acetylation and molecular weight
A1 Novoa Carballal, Ramón
A1 Riguera Vega, Ricardo
A1 Fernández Megía, Eduardo
K1 Chitosan
K1 Pyrene fluorescence
K1 Rheology
AB The aggregation of chitosan (CS) has been studied as a function of concentration, degree of acetylation (DA), and degree of polymerization (DP) by means of pyrene fluorescence and rheology. Fluorescence experiments show that aggregation of CS involves hydrophobic domains (HD) which are more favoured as lower the DA and DP. Consistent with these results, the viscosity of CS solutions decreases continuously on increasing DA, in the whole range of DP. These results, which rule out the participation of the acetyl groups in the HD, have been interpreted by the theory of hydrophobic polyelectrolytes in terms of the electrostatic energy of the aggregates
PB Elsevier
SN 0032-3861
YR 2013
FD 2013-04-03
LK http://hdl.handle.net/10347/16972
UL http://hdl.handle.net/10347/16972
LA eng
NO Novoa-Carballal, R., Riguera, R., & Fernandez-Megia, E. (2013). Chitosan hydrophobic domains are favoured at low degree of acetylation and molecular weight. Polymer, 54(8), 2081-2087. doi: 10.1016/j.polymer.2013.02.024
NO This work was financially supported by the Spanish Government (CTQ2009-10963 and CTQ2009-14146-C02-02) and the Xunta de Galicia (10CSA209021PR and CN2011/037)
DS Minerva
RD 25 abr 2026