Preparation and Characterization of Lignin Graft Copolymer as a Filtrate Loss Control Agent for the Hydrocarbon Drilling Industry

• Main Authors: Mohamad Nasir Mohamad Ibrahim, Say Liang Lim, M. R. Ahmed-Haras, F. S. Fayyadh
• Format: Article
• Language: English
• Published: North Carolina State University 2014-01-01
• Series: BioResources
• Subjects: Oil palm empty fruit bunch fibers; Graft copolymer; AMPS; Soda lignin; Addition polymerization; Filtrate loss
• Online Access: http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_09_1_1472_Mohamad_Ibrahim_Lignin_Graft_Copolymer

Lignin graft copolymer (LGC) was prepared using an addition polymerization technique that involved grafting a 2-acrylamido-2-methylpropane sulfonic acid (AMPS) monomer onto soda lignin (SL). The optimal polymerization conditions were found to be as follows: soda lignin, 2.0 g; initiator, 3% (w/w) potassium persulphate of SL; mass ratio of AMPS to SL, 1:2; reaction time, 7 h; and reaction temperature, 60 °C. The LGC was characterized using a Fourier transform infrared (FTIR) spectroscopy, a thermogravimetric analyzer (TGA), and gel permeation chromatography (GPC). The filtrate loss controlling ability of the LGC was evaluated using the American Petroleum Institute Recommended Practice 13-B 1 standard procedures. The results showed that the LGC has remarkable rheological and filtration controlling properties at both room temperature and high aging temperatures (190 °C).