Elastomers composite materials, several types

Throughout the chapters of this book we considered several types of electroactive materials in a view of using them as biomimetic artificial muscles. In particular, ionic polymer-metal composites, conjugated polymers, and dielectric elastomers were considered. 

Several kinds of polyurethanes are of commercial significance and are conveniently classified into the following major types - flexible foams rigid foams elastomers fibres and moulding compositions surface coatings and adhesives. These various types of material are considered separately in this chapter after an account of the development of polyurethanes, the raw materials involved and the general reactions of isocyanates. 

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