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Ionic Liquid-Mediated Homogeneous Esterification of Cinnamic Anhydride to Xylans.
- Source :
-
International journal of molecular sciences [Int J Mol Sci] 2017 Nov 23; Vol. 18 (12). Date of Electronic Publication: 2017 Nov 23. - Publication Year :
- 2017
-
Abstract
- A new functional biopolymer was synthesized through an ionic liquid-mediated homogeneous grafting of cinnamic anhydride to xylans. The ionic liquid used was 1-allyl-3-methylimidazolium chloride (AMIMCl) ionic liquid. Xylans with degrees of substitution (DS) between 0.11 and 0.57 were accessible in a completely homogeneous system by changing catalysts (NaOH, KOH and LiOH), time, reaction temperature, and cinnamic anhydride/xylan molar ratio. The chemical structure and the thermal stability of the derivatives were characterized by Fourier transform infrared spectroscopy (FT-IR), <superscript>13</superscript> C-NMR spectroscopy, and thermogravimetry. The thermal stability of the derivatives was reduced compared with the original xylan. Possible applications of the cinnamic anhydride-acylated xylan derivatives include wet-end papermaking, organic-inorganic composite films, and hydrogels.<br />Competing Interests: The authors declare no conflict of interest.
Details
- Language :
- English
- ISSN :
- 1422-0067
- Volume :
- 18
- Issue :
- 12
- Database :
- MEDLINE
- Journal :
- International journal of molecular sciences
- Publication Type :
- Academic Journal
- Accession number :
- 29168768
- Full Text :
- https://doi.org/10.3390/ijms18122502