Effect of Temperature on Molecular Weight Distribution of Pyridinium Acetate Treated Kraft Lignin

Tazien Rashid; Chong Fai Kait; Thanabalan Murugesan

doi:10.1016/j.proeng.2016.06.599

Effect of Temperature on Molecular Weight Distribution of Pyridinium Acetate Treated Kraft Lignin

Tazien Rashid
, Chong Fai Kait
, Thanabalan Murugesan^*

^*Corresponding author for this work

School of Engineering & Physical Sciences

Research output: Contribution to journal › Conference article › peer-review

7 Citations (Scopus)

Abstract

The effect of temperature on the molecular weight distribution of kraft lignin during its dissolution in Pyridinium Acetate [PyAce] a protic ionic liquid was examined in detail by gel permeation chromatography. Lignin solubility increased with increasing temperature from 50°C to 100°C. The average molecular weight (Mw) of [PyAce] treated and recovered kraft lignin after thermal treatment with [PyAce] decreased from 4119 g mol−1 to 1995 g mol−1 within the temperature range of 50°C-75°C. A significant increase in molecular weight for [PyAce] treated lignin was observed as the process temperature was further increased from 75°C to 100°C. Results indicated that the condensation reactions occurred at elevated temperatures resulting in increased molecular weight during the dissolution process.

Original language	English
Pages (from-to)	1363-1368
Number of pages	6
Journal	Procedia Engineering
Volume	148
DOIs	https://doi.org/10.1016/j.proeng.2016.06.599
Publication status	Published - 12 Jul 2016
Event	4th International Conference on Process Engineering and Advanced Materials 2016 - Kuala Lumpur, Malaysia Duration: 15 Aug 2016 → 17 Aug 2016

Keywords

Protic Ionic Liquids
Kraft Lignin
Dissolution
Gel Permeation Chromatography

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title = "Effect of Temperature on Molecular Weight Distribution of Pyridinium Acetate Treated Kraft Lignin",

abstract = "The effect of temperature on the molecular weight distribution of kraft lignin during its dissolution in Pyridinium Acetate [PyAce] a protic ionic liquid was examined in detail by gel permeation chromatography. Lignin solubility increased with increasing temperature from 50°C to 100°C. The average molecular weight (Mw) of [PyAce] treated and recovered kraft lignin after thermal treatment with [PyAce] decreased from 4119 g mol−1 to 1995 g mol−1 within the temperature range of 50°C-75°C. A significant increase in molecular weight for [PyAce] treated lignin was observed as the process temperature was further increased from 75°C to 100°C. Results indicated that the condensation reactions occurred at elevated temperatures resulting in increased molecular weight during the dissolution process.",

keywords = "Protic Ionic Liquids, Kraft Lignin, Dissolution, Gel Permeation Chromatography",

author = "Tazien Rashid and Kait, \{Chong Fai\} and Thanabalan Murugesan",

year = "2016",

month = jul,

day = "12",

doi = "10.1016/j.proeng.2016.06.599",

language = "English",

volume = "148",

pages = "1363--1368",

journal = "Procedia Engineering",

issn = "1877-7058",

publisher = "Elsevier",

note = "4th International Conference on Process Engineering and Advanced Materials 2016, ICPEAM 2016 ; Conference date: 15-08-2016 Through 17-08-2016",

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T1 - Effect of Temperature on Molecular Weight Distribution of Pyridinium Acetate Treated Kraft Lignin

AU - Rashid, Tazien

AU - Kait, Chong Fai

AU - Murugesan, Thanabalan

PY - 2016/7/12

Y1 - 2016/7/12

N2 - The effect of temperature on the molecular weight distribution of kraft lignin during its dissolution in Pyridinium Acetate [PyAce] a protic ionic liquid was examined in detail by gel permeation chromatography. Lignin solubility increased with increasing temperature from 50°C to 100°C. The average molecular weight (Mw) of [PyAce] treated and recovered kraft lignin after thermal treatment with [PyAce] decreased from 4119 g mol−1 to 1995 g mol−1 within the temperature range of 50°C-75°C. A significant increase in molecular weight for [PyAce] treated lignin was observed as the process temperature was further increased from 75°C to 100°C. Results indicated that the condensation reactions occurred at elevated temperatures resulting in increased molecular weight during the dissolution process.

AB - The effect of temperature on the molecular weight distribution of kraft lignin during its dissolution in Pyridinium Acetate [PyAce] a protic ionic liquid was examined in detail by gel permeation chromatography. Lignin solubility increased with increasing temperature from 50°C to 100°C. The average molecular weight (Mw) of [PyAce] treated and recovered kraft lignin after thermal treatment with [PyAce] decreased from 4119 g mol−1 to 1995 g mol−1 within the temperature range of 50°C-75°C. A significant increase in molecular weight for [PyAce] treated lignin was observed as the process temperature was further increased from 75°C to 100°C. Results indicated that the condensation reactions occurred at elevated temperatures resulting in increased molecular weight during the dissolution process.

KW - Protic Ionic Liquids

KW - Kraft Lignin

KW - Dissolution

KW - Gel Permeation Chromatography

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DO - 10.1016/j.proeng.2016.06.599

M3 - Conference article

SN - 1877-7058

VL - 148

SP - 1363

EP - 1368

JO - Procedia Engineering

JF - Procedia Engineering

T2 - 4th International Conference on Process Engineering and Advanced Materials 2016

Y2 - 15 August 2016 through 17 August 2016

ER -

Effect of Temperature on Molecular Weight Distribution of Pyridinium Acetate Treated Kraft Lignin

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Keywords

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