The Physics of Macromolecules

Abstract

The long, flexible, chain-like macromolecules playa major role in our existence. As carbohydrates they are the central link in the food chain of all living things; as rubbers they enable the world's transport system to function; as textiles they clothe us, whilst as plastics they serve us in a thousand ways. Above all, perhaps, as biopolymers they constitute most of the interesting parts of ourselves. Physical interest in these varied materials ranges from the shape and size of individual molecules to properties such as the strength, elasticity or dielectric behaviour of amorphous and paracrystalline polymers. Mechanical behaviour is examined in relation to four separate states of polymers: rubberlike, glassy, viscoelastic and partially crystalline. Examples of biopolymers and synthetic polymers are described and the role of viscoelasticity in the performance of motor car tyres is discussed.