Dissolution of kraft lignin using Protic Ionic Liquids and characterization

In the present research three Protic Ionic Liquids (pyridinium formate, pyridinium acetate and pyridinium propionate) were synthesized and tested for the dissolution and subsequent regeneration of kraft lignin. Among the investigated solvents, pyridinium formate showed a higher dissolution capacity...

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Main Authors: Rashid, T., Kait, C.F., Regupathi, I., Murugesan, T.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.30863 /
Published: Elsevier B.V. 2016
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84958171322&doi=10.1016%2fj.indcrop.2016.02.017&partnerID=40&md5=5f743c12dcac01200499bb1d1a36e984
http://eprints.utp.edu.my/30863/
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spelling utp-eprints.308632022-03-25T07:39:43Z Dissolution of kraft lignin using Protic Ionic Liquids and characterization Rashid, T. Kait, C.F. Regupathi, I. Murugesan, T. In the present research three Protic Ionic Liquids (pyridinium formate, pyridinium acetate and pyridinium propionate) were synthesized and tested for the dissolution and subsequent regeneration of kraft lignin. Among the investigated solvents, pyridinium formate showed a higher dissolution capacity (70 w/w) i.e. (710 g/L) at 75 °C within 1 h. The results indicated that the introduced solvent is thermally stable, noncorrosive, possesses low viscosity and is easy to recycle. The dissolution process is purely physical and the physicochemical analysis of the regenerated lignin showed high thermal stability, with reduction in polydispersity and the average molecular weight was reduced from 4119 g/mol to 1249 g/mol. FTIR spectroscopy and 1H NMR results proved that the regenerated lignin is less degraded. Moreover the OH vibrations of regenerated lignin showed a weak inter and intramolecular interaction in regenerated lignin, which could positively help in reducing its chemical resistance towards processing for further commercial applications. Due to the higher solubility of lignin and its stability towards recyclability, the pyridinium formate proved that present selective dissolution and regeneration of lignin could significantly enhance the pretreatment techniques for lignocellulosic biomass. © 2016 Elsevier B.V. Elsevier B.V. 2016 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-84958171322&doi=10.1016%2fj.indcrop.2016.02.017&partnerID=40&md5=5f743c12dcac01200499bb1d1a36e984 Rashid, T. and Kait, C.F. and Regupathi, I. and Murugesan, T. (2016) Dissolution of kraft lignin using Protic Ionic Liquids and characterization. Industrial Crops and Products, 84 . pp. 284-293. http://eprints.utp.edu.my/30863/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description In the present research three Protic Ionic Liquids (pyridinium formate, pyridinium acetate and pyridinium propionate) were synthesized and tested for the dissolution and subsequent regeneration of kraft lignin. Among the investigated solvents, pyridinium formate showed a higher dissolution capacity (70 w/w) i.e. (710 g/L) at 75 °C within 1 h. The results indicated that the introduced solvent is thermally stable, noncorrosive, possesses low viscosity and is easy to recycle. The dissolution process is purely physical and the physicochemical analysis of the regenerated lignin showed high thermal stability, with reduction in polydispersity and the average molecular weight was reduced from 4119 g/mol to 1249 g/mol. FTIR spectroscopy and 1H NMR results proved that the regenerated lignin is less degraded. Moreover the OH vibrations of regenerated lignin showed a weak inter and intramolecular interaction in regenerated lignin, which could positively help in reducing its chemical resistance towards processing for further commercial applications. Due to the higher solubility of lignin and its stability towards recyclability, the pyridinium formate proved that present selective dissolution and regeneration of lignin could significantly enhance the pretreatment techniques for lignocellulosic biomass. © 2016 Elsevier B.V.
format Article
author Rashid, T.
Kait, C.F.
Regupathi, I.
Murugesan, T.
spellingShingle Rashid, T.
Kait, C.F.
Regupathi, I.
Murugesan, T.
Dissolution of kraft lignin using Protic Ionic Liquids and characterization
author_sort Rashid, T.
title Dissolution of kraft lignin using Protic Ionic Liquids and characterization
title_short Dissolution of kraft lignin using Protic Ionic Liquids and characterization
title_full Dissolution of kraft lignin using Protic Ionic Liquids and characterization
title_fullStr Dissolution of kraft lignin using Protic Ionic Liquids and characterization
title_full_unstemmed Dissolution of kraft lignin using Protic Ionic Liquids and characterization
title_sort dissolution of kraft lignin using protic ionic liquids and characterization
publisher Elsevier B.V.
publishDate 2016
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-84958171322&doi=10.1016%2fj.indcrop.2016.02.017&partnerID=40&md5=5f743c12dcac01200499bb1d1a36e984
http://eprints.utp.edu.my/30863/
_version_ 1741197479662059520
score 11.62408

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