Conductometric Determination of Sulfhydryl Groups in Swollen Polycaprolactam Fibers Having Disulfide

A simple condu ctometric t it ration method is disc Ll ssed for the determination of sulfhydryl groups in nonionic polym er n etwork s, s Llch as disulfide a nd alkylene sulfide crosslinked polycaprolactam fibers. The diffusion of the t itrant into t he crosslinked polymer is acco mplished ' by swelling t he ne twork struc t ure, thereby eliminating the necessity of d estroying t he crosslinks a nd /or brea king t he poly mer chains.