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- W2067429180 abstract "Simultaneous interpenetrating polymer networks (IPNs) based on (castor oil-polyethylene glycol) polyurethane and poly(2-vinyl pyridine) (VP) were synthesized by coupling castor oil and polyethylene glycol (PEG) with 2,4-toluene diisocyanate and by radical polymerization of VP with castor oil simultaneously. Both the yield and gel content of the IPNs are higher than 91%, depending on the synthetic conditions. The IPNs show crystallinity which increases with increasing molecular weight of PEG used in synthesis and with decreasing NCO/OH molar ratio. The IPNs absorb water when immersed in water. Water absorbency increases with increasing molecular weight and content of PEG and with decreasing NCO/OH molar ratio. The IPNs exhibit high tensile strength and ultimate elongation. The higher the amount of VP polymerized or the lower the molecular weight of PEG used, the less is the tensile strength. When the IPNs are complexed with LiClO4 and TCNE or TCNQ, the complexes show a mixed ionic and electronic conductivity with a synergistic effect, i.e. the mixed conductivity is much higher than the ionic conductivity or electronic conductivity alone. The mixed conductivity at 25°C can reach 10−3-10−2 S cm−1." @default.
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- W2067429180 date "1994-11-01" @default.
- W2067429180 modified "2023-09-27" @default.
- W2067429180 title "Electronic-ionic conducting interpenetrating polymer networks based on (castor oil-polyethylene glycol) polyurethane and poly(vinyl pyridine)" @default.
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- W2067429180 doi "https://doi.org/10.1016/0014-3057(94)90131-7" @default.
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