Premium
Grafting onto polyester fibers. III. Electrokinetic properties of acrylic acid and acrylonitrile‐grafted polyester fibers in the presence of cationic dyes
Author(s) -
Lokhande H. T.,
Mody N. R.,
Rao K. N.,
Rao M. H.
Publication year - 1979
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1979.070230724
Subject(s) - cationic polymerization , acrylonitrile , polyester , adsorption , electrokinetic phenomena , zeta potential , grafting , acrylic acid , materials science , polymer chemistry , chemical engineering , fiber , copolymer , composite material , chemistry , polymer , organic chemistry , nanotechnology , nanoparticle , engineering
The electrokinetic properties such as zeta potential, surface charge density, and surface conductivity of polyester fibers grafted with acrylic acid and acrylonitrile were measured when cationic dye solutions were streamed through. The presence of the cationic dyes on the surface of the fibers and their specific adsorption at the carboxylic groups in the acrylic acid graft copolymer produce lowering of zeta potential. The decrease in surface charge density as the percent graft increases is due to the decrease in surface area of the fibers due to the adsorption of the cationic dyes. The same trend is observed with acrylonitrile‐grafted fibers. The surface conductivity of the acrylonitrile‐grafted polyester fibers increases with increase in dye concentration of the streaming solution. The results for the 27.4% grafted sample differed from those of the 7.32% and 12.1% grafts, which is indicative of the formation of a three‐dimensional network causing change in both the physical structure as well as the chemical nature of the surface of the substrate.