I. Diaconu et al., SULFOBETAINE POLYURETHANE IONOMERS .5. TENSILE PROPERTIES OF POLYETHER POLYURETHANE IONOMER AND RELATED-COMPOUNDS WITH CO2+ AND PB2+, Die Angewandte makromolekulare Chemie, 221, 1994, pp. 61-65
Stress-strain properties of sulfobetaine polyurethane ionomer based on
polyether were studied comparatively to the non-ionic polyurethane an
d derived compounds with Pb2+ and Co2+. Sulfonation and treatment with
H2S improve the tensile properties due to the increased phase segrega
tion and to the semiconducting microphases formed by clustering of met
al sulfides, respectively. Complexation with Pb2+ and Co2+ diminishes
the tensile properties owing to the partial neutralization of ionic ce
nters.