ABSTRACT
This chapter is mainly concerned with acoustic properties of materials not from their application use, e. g., as a sound barrier or material that screens unwanted frequencies, but from the standpoint of providing acoustic information that can be related to many molecular structural factors. Among these molecular structural factors are: transition temperatures, material morphology, and cross link density. However, this does not preclude in any way the use of fimdamental acoustic property data being utilized as a source of engineering data for acoustic applications.
