 He is noted for several pioneering discoveries that advanced the field of polymer physics, which was recognised by the award of the Bingham Medal for rheology in 1965.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.Aside from establishing the first polymer physics laboratory at an academic institution in America, 
Dr. Guth had an international reputation in physics and polymer science.