Physicochemical properties of low transition temperature mixtures in water

A new generation of designer solvents, low transition temperature mixtures (LTTMs) could be the ideal solvent for the separation of the main biopolymers in lignocellulosic biomass such as lignin, cellulose and hemicellulose. The separated biopolymers have prospective to be converted into high valuab...

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Main Authors: Yiin, C.L., Yusup, S., Quitain, A.T., Uemura, Y.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.31614 /
Published: Italian Association of Chemical Engineering - AIDIC 2015
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946110265&doi=10.3303%2fCET1545255&partnerID=40&md5=48b31d6bd29b58ffdefd3cb0a29b8c4e
http://eprints.utp.edu.my/31614/
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spelling utp-eprints.316142022-03-26T03:24:24Z Physicochemical properties of low transition temperature mixtures in water Yiin, C.L. Yusup, S. Quitain, A.T. Uemura, Y. A new generation of designer solvents, low transition temperature mixtures (LTTMs) could be the ideal solvent for the separation of the main biopolymers in lignocellulosic biomass such as lignin, cellulose and hemicellulose. The separated biopolymers have prospective to be converted into high valuable products. LTTMs can be synthesized from two natural high melting point materials through hydrogen bonding interactions. The objective of this research was to study the effects of water in the physicochemical properties of LTTMs such as hydrogen bonding, thermal stability and lignin solubility. LTTMs were prepared in the presence and absence of distilled water with malic acid as the hydrogen bond donor (HBD) and sucrose as hydrogen bond acceptor (HBA). The molar ratio of malic acid to sucrose was fixed at 1:1. Based on the fourier transform infrared spectroscopy (FTIR) analysis, the FT-IR spectra of all the LTTMs shown representative peak of carboxylic acid group of malic acid turned broader at 1,710 cm-1 for the C=O group. Nevertheless, the peaks involved in the H-bonding due to the formation of LTTMs shifted and became broader within 2,500-3,600 cm-1 for the OH groups of carboxylic acid and alcohols in the presence of water. The degradation temperature of LTTM was not affected by the addition of water which remained at 400 K. In addition, the LTTM with water had increased the lignin solubility from 6.22 to 6.38 wt without affecting the thermal behaviour of LTTMs. Copyright © 2015, AIDIC Servizi S.r.l.,. Italian Association of Chemical Engineering - AIDIC 2015 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946110265&doi=10.3303%2fCET1545255&partnerID=40&md5=48b31d6bd29b58ffdefd3cb0a29b8c4e Yiin, C.L. and Yusup, S. and Quitain, A.T. and Uemura, Y. (2015) Physicochemical properties of low transition temperature mixtures in water. Chemical Engineering Transactions, 45 . pp. 1525-1530. http://eprints.utp.edu.my/31614/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description A new generation of designer solvents, low transition temperature mixtures (LTTMs) could be the ideal solvent for the separation of the main biopolymers in lignocellulosic biomass such as lignin, cellulose and hemicellulose. The separated biopolymers have prospective to be converted into high valuable products. LTTMs can be synthesized from two natural high melting point materials through hydrogen bonding interactions. The objective of this research was to study the effects of water in the physicochemical properties of LTTMs such as hydrogen bonding, thermal stability and lignin solubility. LTTMs were prepared in the presence and absence of distilled water with malic acid as the hydrogen bond donor (HBD) and sucrose as hydrogen bond acceptor (HBA). The molar ratio of malic acid to sucrose was fixed at 1:1. Based on the fourier transform infrared spectroscopy (FTIR) analysis, the FT-IR spectra of all the LTTMs shown representative peak of carboxylic acid group of malic acid turned broader at 1,710 cm-1 for the C=O group. Nevertheless, the peaks involved in the H-bonding due to the formation of LTTMs shifted and became broader within 2,500-3,600 cm-1 for the OH groups of carboxylic acid and alcohols in the presence of water. The degradation temperature of LTTM was not affected by the addition of water which remained at 400 K. In addition, the LTTM with water had increased the lignin solubility from 6.22 to 6.38 wt without affecting the thermal behaviour of LTTMs. Copyright © 2015, AIDIC Servizi S.r.l.,.
format Article
author Yiin, C.L.
Yusup, S.
Quitain, A.T.
Uemura, Y.
spellingShingle Yiin, C.L.
Yusup, S.
Quitain, A.T.
Uemura, Y.
Physicochemical properties of low transition temperature mixtures in water
author_sort Yiin, C.L.
title Physicochemical properties of low transition temperature mixtures in water
title_short Physicochemical properties of low transition temperature mixtures in water
title_full Physicochemical properties of low transition temperature mixtures in water
title_fullStr Physicochemical properties of low transition temperature mixtures in water
title_full_unstemmed Physicochemical properties of low transition temperature mixtures in water
title_sort physicochemical properties of low transition temperature mixtures in water
publisher Italian Association of Chemical Engineering - AIDIC
publishDate 2015
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946110265&doi=10.3303%2fCET1545255&partnerID=40&md5=48b31d6bd29b58ffdefd3cb0a29b8c4e
http://eprints.utp.edu.my/31614/
_version_ 1741197606114033664
score 11.62408

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