NIST: Materials Science - Polymers Division - - National Institute of Standards and Technology (US government): polymers - electronics materials, biomaterials, ... large site with searchable inde.
Polymers Division of NIST - - The Polymers Division of US standards institute provides standards, measurement methods, and fundamental concepts for plastics industr.
What is rheology anyway? - - Rheology studies the flow of unusual materials, particularly non-Newtonian fluids such as mayonnaise, paint, molten plastics, and foams. The Society of Rheology caters to rheologists in many field.