31] modified coir fibers (CFs) using NaOH at concentrations of 5-10%, as well as grafting with methyl methacrylate and cyanoethylation
is an effective method for improving the dielectric properties of PVA, which can be used as a surface size for electrical insulating paper.
Material (surface) treatments such as acetylation, polymer grafting, cyanoethylation
, and impregnation have been applied to yield favorable results (Grozdits and Bibal 1983, Nada and El-Saied 1989, Rowell and Keany 1991, Hassan et al.
In another study of cyanoethylation
of wood pulp and cotton results that wood pulp was more reactive because of a lower degree of polymerization (92).
The chemical modification of cellulose fibers surface by acetylation, cyanoethylation
, peroxide treatment, iso-cyanates sizing, and so on, as well as the treatment with various coupling agents has been tested to improve wood fiber-matrix adhesion .
The effective substitution reactions include acetylation by acetic anhydride and cyanoethylation