2.2. Auxiliaries
A polymeric dispersant SMA was kindly provided by NDC lab of
China. Cationic agent PNH, a poly-aminochlorohydrin quaternary
ammonium polymer with epoxide functionality that can react with
cellulose by ether formation in the presence of alkalis, was gained
from Haiyi Chemical Co. Ltd., China. Polyacrylate binder FSB was
bought from Hongqing Chemical Co. Ltd., China. Other chemical
agents were all A.R. grade.