Preparation and characterization of a newly water soluble lignin graft copolymer from oil palm lignocellulosic waste

Mohamad Nasir Mohamad Ibrahim, and Mohamed Rashid Ahmed-Haras, and Coswald Stephen Sipaut @ Mohd Nasri, and Hassan Y. Aboul-Enein, and Abdullahi Ali Mohamed, (2010) Preparation and characterization of a newly water soluble lignin graft copolymer from oil palm lignocellulosic waste. Carbohydrate Polymers, 80 (4). pp. 1102-1110. ISSN 0144-8617

[img] Text
Preparation and characterization of a newly water soluble lignin graft copolymer from oil palm lignocellulosic waste.pdf

Download (98kB)

Abstract

Water soluble lignin graft copolymer (LGC) was synthesized using oil palm empty fruit bunch (OPEFB) fibre as a renewable biomass source. Initially, Kraft lignin (KL) was extracted by exploiting the OPEFB fibre Kraft pulping residue. KL was grafted with acrylic acid (AA) by using p-toluenesulfonic acid (PTS) as a catalyst in the condensation process via the bulk technique. The resulting copolymer was characterized by a Fourier transform infrared (FTIR) spectroscopy, differential scanning calorimetry (DSC), thermogravimetry-Fourier transform infrared (TG-FTIR) and carbon–hydrogen–nitrogen analyzer (CHN). The FTIR spectrum of the product showed absorption due to the presence of ester bonds as a proof of grafting. The DSC and TG-FTIR results showed significant improvements in the KL thermal properties at least 27.261% as well as a thermal degradation resistance. The elements percentages of KL compositions were changed as shown by the CHN data. SEM micrographs illustrated the grafting reaction homogenizing the KL morphological structure

Item Type: Article
Uncontrolled Keywords: OPEFB fibre Kraft lignin, PTS Lignin graft copolymer, Glass transition temperature
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: FACULTY > Faculty of Engineering
Depositing User: Noraini
Date Deposited: 11 Mar 2019 00:25
Last Modified: 11 Mar 2019 00:25
URI: http://eprints.ums.edu.my/id/eprint/21559

Actions (login required)

View Item View Item