Abstract：
:This work emphazises the importance of the solubilizing conditions for the elaboration of chitosan hydrogel beads, which were produced using electromagnetic laminar jet breakup technology, resulting in dried porous beads by further freeze-drying. Paramaters such as the acid nature and concentration (acetic, formic, citric, lactic, maleic and malic, 0.1 to 0.5 mol·L-1), the chitosan concentration (2 to 5 wt%) and composition of the gelation bath (NaOH, with or without EtOH) were studied. Viscosity versus strain rate measurements were carried out on chitosan acidic solutions and the viscoelastic behaviour was studied on hydrogels. The solutions exhibiting the highest viscosities led to the stiffest macrohydrogels, as a result of chitosan carboxylate interactions. Specific surface areas of the freeze-dried beads were determined in the range from 12 to 107 m2·g-1. Their internal texture was observed by Scanning Electron Microscopy. Water uptake was also measured for further use in the field of water purification.
journal_name
Int J Biol Macromoljournal_title
International journal of biological macromoleculesauthors
Lakehal I,Montembault A,David L,Perrier A,Vibert R,Duclaux L,Reinert Ldoi
10.1016/j.ijbiomac.2019.01.216subject
Has Abstractpub_date
2019-05-15 00:00:00pages
68-77eissn
0141-8130issn
1879-0003pii
S0141-8130(18)35167-5journal_volume
129pub_type
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journal_title：International journal of biological macromolecules
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