Physicochemical Insights into Enzymatic Polymerization of Lignosulfonates

Effect of Salts on Laccase‐Catalyzed Polymerization of Lignosulfonate

“…The herein used initial and polymerized material was thoroughly characterized in a recently published work. [46] (An overview of some important numbers on the initial LS material can be found in the Supporting Information). For the enzymatic polymerization reaction of LS, the most pronounced increases in viscosity of about 30 % were found for chloride and acetate, for propionate and formate no significant differences were seen when compared to the control, while sulfate, phosphate and oxalate had about 50 % lower viscosities.…”

“…A general investigation on the solution and storage stability of the pLS was performed in earlier works. [46,59] While the stability of the initial LS molecules in the respective aqueous salt solutions was investigated in this work by the determination of the zeta potential. The orientation of the zeta potential, either positive or negative, depends on the kind of ions present on the surface of the particle.…”