Issue 48, 2015

Effects of polarity, hydrophobicity, and density of ionic liquids on cellulose solubility

Abstract

We have synthesised novel ionic liquids (ILs) to show both cellulose dissolution ability and LCST-type phase transition after mixing with water. To realise both polar and hydrophobic properties, tetraalkylphosphonium cations and a series of carboxylate anions were employed to assume hydrophobic and highly polar properties, respectively. Effects of their alkyl chain length on the water compatibility and cellulose solubility of the corresponding ILs were systematically examined. We succeeded in synthesising novel ILs which dissolve cellulose and separable with water at moderate temperature. Through the present study, we have clarified that not only polarity but also density of ILs is an important factor in designing the ILs for cellulose dissolution.

Graphical abstract: Effects of polarity, hydrophobicity, and density of ionic liquids on cellulose solubility

Supplementary files

Article information

Article type
Paper
Submitted
29 Sep 2015
Accepted
09 Nov 2015
First published
09 Nov 2015

Phys. Chem. Chem. Phys., 2015,17, 32276-32282

Author version available

Effects of polarity, hydrophobicity, and density of ionic liquids on cellulose solubility

M. Abe, K. Kuroda, D. Sato, H. Kunimura and H. Ohno, Phys. Chem. Chem. Phys., 2015, 17, 32276 DOI: 10.1039/C5CP05808B

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