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
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Preparation and characterization of a newly water soluble lignin graft copolymer from oil palm lignocellulosic waste.pdf Download (98kB) | Preview |
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 |
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| Keyword: | OPEFB fibre Kraft lignin, PTS Lignin graft copolymer, Glass transition temperature |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Department: | FACULTY > Faculty of Engineering |
| Depositing User: | NORAINI LABUK - |
| Date Deposited: | 11 Mar 2019 08:25 |
| Last Modified: | 11 Mar 2019 08:25 |
| URI: | https://eprints.ums.edu.my/id/eprint/21559 |
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