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Robert Weiss

2015

Articles 1 - 3 of 3

Full-Text Articles in Engineering

Ftir Studies Of Ionic Interactions In Blends, Robert Weiss Dec 2015

Ftir Studies Of Ionic Interactions In Blends, Robert Weiss

Robert Weiss

No abstract provided.


Supercritical Carbon Dioxide Aided Preparation Of Conductive Polyurethane-Polypyrrole Composites, Robert Weiss Dec 2015

Supercritical Carbon Dioxide Aided Preparation Of Conductive Polyurethane-Polypyrrole Composites, Robert Weiss

Robert Weiss

Conductive polyurethane (PU) foams were prepared using a two-step procedure. First, PU foams were impregnated with the oxidant I2 from a scCO2 solution. Subsequently, the foams were subjected to pyrrole vapor, which polymerized within the foam in the presence of the oxidant. The reduced form of iodine as a result of the oxidative polymerization of pyrrole functions as a dopant. The conductivities of the foams ranged from 10−7 to 10−2 S/cm and the foams were flexible and not brittle. The concentration of conductive polypyrrole, i.e. the PPy–I2 charge-transfer complex, needed to achieve a conductivity of 10−4–10−3 S/cm was about 22% …


Supercritical Carbon Dioxide Aided Preparation Of Conductive Polyurethane-Polypyrrole Composites, Robert Weiss Dec 2015

Supercritical Carbon Dioxide Aided Preparation Of Conductive Polyurethane-Polypyrrole Composites, Robert Weiss

Robert Weiss

Conductive polyurethane (PU) foams were prepared using a two-step procedure. First, PU foams were impregnated with the oxidant I2 from a scCO2 solution. Subsequently, the foams were subjected to pyrrole vapor, which polymerized within the foam in the presence of the oxidant. The reduced form of iodine as a result of the oxidative polymerization of pyrrole functions as a dopant. The conductivities of the foams ranged from 10−7 to 10−2 S/cm and the foams were flexible and not brittle. The concentration of conductive polypyrrole, i.e. the PPy–I2 charge-transfer complex, needed to achieve a conductivity of 10−4–10−3 S/cm was about 22% …