Characterization and optimization of the glyoxalation of a methanol-fractionated alkali lignin using response surface methodology

• Main Authors: Ang, Aikfei, Ashaari, Zaidon, Bakar, Edi Suhaimi, Ibrahim, Nor Azowa
• Format: Article
• Language: English
• Published: College of Natural Resources, North Carolina State University 2015
• Online Access: http://psasir.upm.edu.my/id/eprint/44033/1/Characterization%20and%20optimization%20of%20the%20glyoxalation%20of%20a%20methanol-fractionated%20alkali%20lignin%20using%20response%20surface%20methodology.pdf; http://psasir.upm.edu.my/id/eprint/44033/; https://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_3_4795_Ang_Optimization_Glyoxalation_Alkali_Lignin
• Institution: Universiti Putra Malaysia

The glyoxalation of a methanol-fractionated alkali lignin was executed at 60 °C for 8 h with different amounts of glyoxal (40% in water) and 30% NaOH. The weights of the lignin and water were fixed at 10.0 and 15.0 g, respectively. The gel permeation chromatography (GPC) results indicated that depol...