Examines various aspects of diffusion in polymers that are being quantitatively described and engineered--detailing the phenomenology of diffusion and outlining areas for future research. Emphasizing the importance of fundamental studies throughout.

This volume contains reviews on state-of-the-art Japanese research presented in the annual Spring and Autumn meetings of the Japanese Polymer Science Society. The aim of this section is to make information on the progress of Japanese Polymer Science, and on topics of current interest to polymer scientists in Japan, more easily available worldwide.

This report reviews the literature in the field of thermal welding and goes on to identify the theories for the mechanism of thermal welding of thermoplastics and to relate these, where possible, to current welding techniques and joint strength development.