Abstract
New aniline-containing segmented poly(urea-urethane) (PUU-OPA) based on polyether polyurethane prepolymer and an oligomer of amine-terminated polyaniline (OPA) were prepared as a conductive material. The amine-terminated functional groups of OPA were introduced into the poly(urea-urethane) (PUU) structure as a chain extender to form the hard segment of the copolymer with urea-linkage. The morphology of PUU-OPA was examined by the transmission electron microscopy (TEM) and solid-state 13C NMR approaches. The conductivity of the copolymers is found to be ranged from 0.83 S/cm for the neat OPA to 1.96×10−6 S/cm for the resultant copolymers. TEM measurements clearly reveal the microphase separation. Various contact time CP experiments indicate that TCH and T1ρ(H) of the soft segment carbons declined as the OPA content increased. These results indicate that the chain mobility and the domain size of the soft segment in the copolymer on the nanophase scale gradually decreased as the OPA content increased.
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Liu, JY., Hsu, YC. & Wang, YZ. Morphology of Segmented Polyether Based Poly(urea-urethane) Thermoplastic Elastomers. Polym J 38, 868–875 (2006). https://doi.org/10.1295/polymj.PJ2005204
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DOI: https://doi.org/10.1295/polymj.PJ2005204