Premium
Graft copolymerization of nylon 6 with methyl methacrylate using dimethylaniline/Cu 2+ ion system
Author(s) -
ElRafie M. H.,
Hebeish A.
Publication year - 1975
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.1975.070190704
Subject(s) - grafting , formic acid , copolymer , monomer , methyl methacrylate , dimethylaniline , yield (engineering) , polymer chemistry , chemistry , acetic acid , materials science , nuclear chemistry , organic chemistry , polymer , metallurgy
The ability of dimethylaniline (DMA)/Cu 2+ ion initiator to induce grafting of methyl methacrylate (MMA) onto nylon 6 was investigated under a variety of conditions. It was found that the graft yield is dependent on the concentration of the Cu 2+ ion, of DMA, and of MMA. While the graft yield increases as the monomer concentration increases, there are optimal concentrations of DMA and Cu 2+ ion. Below or above these concentrations, lower grafting occurred. The type of cupric salt also affects grafting to varying degrees. While the presence of CuSO 4 and Cu(NO 3 ) 2 accelerates grafting, the presence of CuCl 2 offsets the reaction. Increasing the reaction temperature and reaction time favorably influences grafting. Addition of acetic acid enhances grafting, whereas formic acid decreases grafting. Preswelling of nylon with formic acid leaves the susceptibility of nylon toward grafting practically unaltered. Studies of the copolymerization reaction was not confined to the graft yield but was extended to homopolymer formation and total conversion.