If you want to look into this effect in more detail, do a web search on the terms "rubber elasticity."

He is especially well known for his work on the thermodynamics of rubber elasticity.

The complete quantitative treatment of rubber elasticity is fairly advanced for even high school level chemistry, but it does exist.

The stretching of the chain gives rise to the above mentioned attractive interactions due to chain's rubber elasticity.

He and his student Eugene Guth developed what today is known as the kinetic theory of rubber elasticity.

The polynomial hyperelastic material model is a phenomenological model of rubber elasticity.

Rubber elasticity.

Invoking the theory of rubber elasticity, one considers a polymer chain in a crosslinked network as an entropic spring.

Two common models for rubber elasticity are the freely-jointed chain model and the worm-like chain model.

It is convenient to write such a relation in the form The first relation was proposed by Rivlin to describe rubber elasticity.

Rubber elasticity, a well-known example of hyperelasticity, describes the mechanical behavior of many polymers, especially those with Cross-link.

Then,(d), each slip-link point changes its position by affine deformation (homogeneous deformation as in rubber elasticity theory).

Hearmon's (1961) book gives an admirable introduction to anisotropic elasticity, while rubber elasticity is treated from the practical point of view in Treloar 91975).

These conceptual difficulties have not prevented the development by James, Guth, Flory, Staverman, Duiser and others of the network theory of rubber elasticity.

The solution used in the classical theories of rubber elasticity is to consider the network junctions as embedded, the chains between the junctions being undefined in position and considered as statistical variables.

Thus in the theory of rubber elasticity the polymer chain is represented quite well by a random walk in three dimensions and from this the chain entropy and hence the free energy are deduced.

The ratio T/To in the above compensates for the change in terminal modulus in the rubbery material (where rubber elasticity theory predicts GT) while the density ratio arises from thermal expansion.

These included the treatment of the flexible, randomly kinked molecule in Brownian motion of polymers; the explanation of the entropic origin of the elastic force; and the Kinetic Theory of Rubber Elasticity.

This makes membrane dry suits easy to put on and get off, provides a great range of motion for the wearer, and makes them comfortable to wear for long periods, as the wearer does not have to pull against rubber elasticity.

The former approach has been the classical one, dating from the early statistical models of rubber elasticity based on random walk theory; the latter has been followed by the rheologists, those who study solution properties and in recent years developed in new directions by de Gennes and Edwards and their collaborators.