In-Situ Rheological Studies of Cationic Lignin Polymerization in an Acidic Aqueous System.

ABSTRACT: The chemistry of lignin polymerization was studied in the past. Insights into the rheological behavior of the lignin polymerization system would provide crucial information required for tailoring lignin polymers with desired properties. The in-situ rheological attributes of lignin polymerization with a cationic monomer, [2-(methacryloyloxy)ethyl] trimethylammonium chloride (METAC), were studied in detail in this work. The influences of process conditions, e.g., temperature, component concentrations, and shear rates, on the viscosity variations of the reaction systems during the polymerization were studied in detail. Temperature, METAC/lignin molar ratio, and shear rate increases led to the enhanced viscosity of the reaction medium and lignin polymer with a higher degree of polymerization.

SUBMITTER: Gharehkhani S 

PROVIDER: S-EPMC7764959 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature