Abstract
Tensile properties of the elastomeric ionenes containig poly (tetrahydrofuran) segments (PTI) were investigated. PTI exhibited excellent tensile properties: modulus at 100% elogation, 0.5-2.0MPa; tensile strength, 20-30MPa; elongation, 600-1000%. However, the tensile properties became very low when the water content exceeded 30%. This lowering is due to the presence of ionic sites. The recovery of the original tensile properties suggests that the lowering by water is not ascribable to the chemical deteriorations, e.g., hydrolysis of PTI. Effects of the concentration of ionic sites and the kind of counter anions on tensile properties were also reported. The introduction of dianion, e.g., -O3SCH2CH2SO-3 had a considerable effect to increase the modulus of PTI.
