Purification Processes for Generating Cationic Lignin-Acrylamide Polymers.

ABSTRACT: Purification is an essential step in many polymerization processes for fabricating highly pure polymers. This study considered various purification methods for purifying the product of lignin, acrylamide (AM), and diallyl dimethylammonium chloride (DADMAC) copolymerization reactions at a laboratory scale. The charge density, yield, molecular weight, and solubility analyses confirmed that ethanol extraction and membrane filtration were the most effective processes for producing lignin-p(AM)-p(DADMAC). The ¹H NMR analysis revealed that the membrane dialysis effectively removed unreacted AM and DADMAC monomers from the reaction medium. The produced samples of the ethanol-extraction and dialysis processes had higher solubility and yield compared to the product of the acidification p

SUBMITTER: Wang X 

PROVIDER: S-EPMC11525501 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature