Analysis of polymer surfaces by SIMS: 7. Homopolymer and copolymer nylons

Static secondary ion mass spectra (positive and negative) have been obtained from spin‐cast films of nylon−3, −4, −6, −7, −8, −11, −12, −46, −66 and −610 homopolymers, as well as nylon−6/66 copolymers covering the composition range. All spectra are highly characteristic and feature protonated multiple repeat unit fragments. Relative peak intensities from the nylon−6/66 copolymers correlate with composition. Overall, the fragmentation patterns bear a strong resemblance to high temperature pyrolysis mass spectra from these polymers.