Purification of Monomers Leads to High-Quality Lignin Macromonomers

International Rubber Conference

Syed Azhar, S.A.R.^1^2 ; Ahn, Dong June^1^3

Department of Chemical and Biological Engineering, College of Engineering, Korea University, Seoul

02841, Korea, Republic of^1

Universiti Kuala Lumpur, Malaysian Institute of Chemical and Biological Technology, Lot 1988, Vendor City Industrial Area, Alor Gajah, Malacca

78000, Malaysia^2

KU-KIST Graduated School of Converging Science and Technology, Korea University, Seoul

02841, Korea, Republic of^3

关键词: Chemical process;    Fourier transformed infrared spectroscopy;    High standards;    Hydroxyl groups;    Macro-monomers;    Methacryloyl chloride;    Physical and chemical properties;    Removal of impurities;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/548/1/012021/pdf
DOI  :  10.1088/1757-899X/548/1/012021

来源: IOP

【 摘 要 】

Purification is critical in any chemical process. The removal of impurities will produce the product in better quality and high standard. In this study, a new type of monomer was prepared by condensation polymerization of alkali lignin (AL) and methacryloyl chloride (MAC). The effect of AL/MAC ratio and the purification of MAC were investigated. The physical and chemical properties of the product obtained which is lignin methacrylate (LMA) were characterized by Fourier Transformed Infrared spectroscopy (FT-IR) and Nuclear Magnetic Resonance (1H-NMR). The result reveals that the purification was successfully removed the hydroxyl groups from the stabilizer in MAC and it is found that all the hydroxyl groups are coming from AL. The single interaction between and MAC has successfully enhanced the product obtain which does show no hydroxyl groups. The 1H-NMR data also showed that the purification of MAC influences the outcome. The noise and impurities were eliminated after the purification of MAC, and more pure products were obtained. This new monomer (LMA) synthesis that can be further utilized for various applications.