Modification of chitin structure with tailored ionic liquids
Małgorzata Maria Jaworska , Izabela Stępniak , Maciej Galiński , Dawid Kasprzak , Dorota Biniaś , Andrzej Górak
AbstractChitin, poly N-acetylglucosamine, has a great potential for use on an industrial scale as an enzyme carrier but it has an unfavorable particle structure that can be modified using ionic liquids (ILs). Several ionic liquids were investigated that have the same substituents on the ring (methyl- and propyl-) but differed in the type of cationic ring (pyrrolidinium, piperidinium, and piperazinium). Organic acid ions (acetic and lactic) were used as counter ions. 1-ethyl-3-methyl-imidazolium acetate and 1-ethyl-3-methyl-imidazolium lactate were used as a reference. The results confirm that the chitin particle structure or size, or both, simultaneously changes if chitin is dissolved in an IL and then precipitated. Organic acid anions and short substituents on the cationic ring of ILs influenced particle modification substantially, whereas the type of ring played a minor role. Additionally, the ionic liquids [MPpyrr][OAc], [MPpip][OAc] and [DMPpz][OAc] could be reused up to at least 4 times without losing their ability to dissolve chitin.
|Journal series||Carbohydrate Polymers, ISSN 0144-8617|
|Publication size in sheets||0.5|
|Keywords in English||chitin, ionic liquid, organic acids, structure, particle size|
|ASJC Classification||; ;|
|Score||= 40.0, 10-06-2020, ArticleFromJournal|
|Publication indicators||= 3; = 4; : 2018 = 1.72; : 2018 = 6.044 (2) - 2018=5.975 (5)|
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