Premium
Grafting of chelating monomers to styrene—butadiene latexes
Author(s) -
Gardner John B.,
Harper Billy G.
Publication year - 1965
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.1965.070090229
Subject(s) - monomer , grafting , methacrylic acid , polymer chemistry , styrene , natural rubber , materials science , acrylic acid , chemistry , copolymer , polymer , composite material
It has been previously reported that vinyl esters have been grafted to natural rubber latex. We have grafted two other types of vinyl monomers to styrene‐butadiene latex. These monomers are the ammonium salts of acrylic acid and methacrylic acid, and the ammonium salts of vinyl chelating agents, such as N ‐( ar ‐vinylbenzyl)iminodiacetic acid. (Ionizing radiation doses of 0.5–2 Mrad are sufficient to accomplish the grafting.) These monomers, in the range of 2–6%, give very definite improvement in adhesion to metals. They also improve the rust resistance, and when pigmented with an iron oxide dispersion, improve the whitening resistance of the coating. The vinyl chelating monomers give the best improvement over the untreated latex, particularly in the resistance to whitening. The optimum amount of monomer is 4–6%. This compares very well with the theoretical amount for a monomolecular layer of monomer surrounding each latex particle.