Novel pathway to produce high molecular weight kraft lignin-acrylic acid polymers in acidic suspension systems.

ABSTRACT: Kraft lignin (KL) produced in kraft pulping process has a low molecular weight and solubility, which limits its application in industry. For the first time, KL was polymerized with acrylic acid (AA) in an acidic aqueous suspension system to produce a water soluble lignin-AA polymer with a high molecular weight in this work. The polymerization reaction was carried out using K₂S₂O₈ as an initiator, and the influence of reaction conditions on the carboxylate group content and molecular weight of resultant lignin polymers was systematically investigated. The mechanism of polymerization of KL and AA was discussed fundamentally. The resulting lignin-AA polymer was characterized by Fourier Transform Infrared spectrophotometry (FTIR), proton nuclear magnetic resona

SUBMITTER: Kong F 

PROVIDER: S-EPMC9079287 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature