Application of 1-Allyl-3-(1-butyl)imidazolium Chloride in the Synthesis of Cellulose Esters: Properties of the Ionic Liquid, and Comparison with Other Solvents
| Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
|---|---|
| Data(s) |
20/10/2012
20/10/2012
2009
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| Resumo |
The ionic liquid (IL), 1-allyl-3-(1-butyl)imidazolium chloride (AlBuImCl), has been synthesized and its properties determined. Increase in the temperature increased its conductivity and decreased its density, polarity, and viscosity. Microcrystalline cellulose (MCC), dissolves in thisIL by heating at 80 degrees C; this did not affect its degree of polymerization, decreased its index of crystallinity (Ic), and changed in morphology after regeneration. Convenient acylation of MCC was achieved by using 50% excess anhydride at 80 degrees C, for 24 or 48 h for acetic and butyric anhydride, respectively. The composition of the mixed esters depended on the initial ratio of the anhydrides, and their order of addition. FAPESP Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) CNPq |
| Identificador |
MACROMOLECULAR BIOSCIENCE, v.9, n.8, p.813-821, 2009 1616-5187 http://producao.usp.br/handle/BDPI/31392 10.1002/mabi.200900034 |
| Idioma(s) |
eng |
| Publicador |
WILEY-V C H VERLAG GMBH |
| Relação |
Macromolecular Bioscience |
| Direitos |
restrictedAccess Copyright WILEY-V C H VERLAG GMBH |
| Palavras-Chave | #activation energy adsorption #cellulose acetate #cellulose butyrate #ionic Liquids (ILs) #1-allyl-3-(1-butyl)imidazolium chloride (AlBuImCl) #DILUTE-SOLUTION PROPERTIES #RHEOLOGICAL PROPERTIES #1-ALLYL-3-METHYLIMIDAZOLIUM CHLORIDE #BACTERIAL CELLULOSE #DISSOLUTION #DERIVATIVES #CHEMISTRY #ACYLATION #ACETATE #POLYSACCHARIDES #Biochemistry & Molecular Biology #Materials Science, Biomaterials #Polymer Science |
| Tipo |
article original article publishedVersion |
