Recent developments in polyurethane-based conducting composites

Abstract

Polyurethane-based conducting composites with polyaniline, polythiophene or polypyrrole are in the class of modern macromolecular materials that combine the toughness and elasticity of polyurethane matrix with conductivity of intrinsically conducting polymers. Since the methods of preparation strongly influence the structure and properties of resulting composite/blend, this works aim at systematic description of polyurethane based conducting composites. This review has been structured to present an overview on preparations, characterisation and applications of polyurethane-based conducting materials with polyaniline, polythiophene or polypyrrole.

Highly Stretchable and Conductive Polymer Material Made from Poly(3,4‐ethylenedioxythiophene) and Polyurethane Elastomers

“…It is known that blends of PUR and the conductive polymer polyaniline exhibits intermolecular hydrogen bonding between the two polymers. [14] Similar behavior could be expected between PUR and PEDOT, based on the known strong pH dependence of the conductivity of PEDOT indicative of proton accepting properties. [21] The changes in thermal and mechanical properties of the blend indicate strong molecular interactions between PEDOT and PUR, and supports our hypothesis that PEDOT does not exist as a separate phase in the PUR matrix.…”

“…The threshold concentration for conductive polymers in blends to permit substantial conductance is often given as 16 vol % although lower values have been reported. [13,14] The threshold of 16 vol % corresponds to 23 wt % PEDOT in A highly elastic and stretchable conductive polymer material resulted from blending the conductive polymer poly(3,4-ethylenedioxythiophene):p-tosylate and an aliphatic polyurethane elastomer. The blend inherited advantageous properties from its constituents, namely high conductivity of 120 S cm -1 from its conductive polymer component, and elastomeric mechanical properties resembling those of the polyurethane, including good adhesion to various substrates.…”

“…This is in agreement with experimental results obtained for other kinds of conductive polymer blends. [13,14] Adlayers of the 40 % and 50 % PEDOT/PUR blends applied to a piece of PUR (without being sandwiched) exhibited optical changes after 50 % strain and relaxation with the surface layers becoming slightly opaque. This was most explicit for the 50 % PEDOT samples and to some extent the 40 % PEDOT samples, but not observed for the 33 % PEDOT samples.…”

Structure and design of polymers for durable, stretchable organic electronics

“…Many methods have been explored to blend semiconducting polymers and insulating rubbers 145,146 but the majority fail to explore electrical-mechanical property relationships, which the next few examples discuss.…”

Evaluation of Mechanical, Thermal, and Morphological Behaviors of Polyurethane/Mahua Seed Cake Green Composite

“…With varying the compositions of the soft and hard segments, chain extenders, and additives, the elasticity and toughness of PUs can be altered. [13][14][15] Many scientists have studied the properties of the PUs synthesized from variety of polyols and diisocyanates. 14,16,17 This wide range of achievable properties makes PU as an indispensable component in building construction, consumer products, transportation, and medical devices.…”