Premium
Sulfonation of Polyamides
Author(s) -
Vaya Jacob,
Zilkha Albert
Publication year - 1974
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.197400077
Subject(s) - chemistry , polyamide , hydrolysate , hydrolysis , amide , sulfuric acid , polymer , polymer chemistry , amino acid , organic chemistry , ethanol , acid hydrolysis , biochemistry
Abstract The sulfonation of polyamides (Nylons‐3,6,11 and 6,6) was investigated using fuming sulfuric acid and solutions of SO 3 in CCl 4 . The sulfonated polymers were soluble in water and insoluble in ethanol. Acid hydrolysis of the polymers and quantitative determination of the amino acids in the hydrolysate showed the presence of α‐sulfo amino acids. This showed that sulfonation in the polymer occurred in the active α‐position of the amide group.