A single correlation for sand erosion of a “family” of polyurethanes is presented. By “family” is meant a group of chemically similar compounds. For the first time, an implication of Truesdell’s [1] observations regarding the number of dimensional parameters in viscoelastic constitutive equations has been used together with the Pi theorem to prepare a single dimensionless correlation for a grou...

Sucrose (alpha-D-glucopyranosyl-(1-->2)-beta-D-fructofuranoside) is an inexpensive chemical produced by sugar cane and sugar beet cultivation. Chemical and/or biochemical transformations convert it into highly valuable synthetic intermediates such as 5-hydroxymethylfurfural (HMF), bioethylene, 1,2-propylene glycol and levulinic acid. Sucrose can also be converted into biodegradable polymers suc...

Among numerous synthetic macromolecules, polyurethane in its different forms has proven sheer dominance and established a reputation as reliable trusted material due to proficiency terms of superior properties, which include: high mechanical strength abrasion resistance, good durability, adhesion, thermal stability, excellent chemical weathering resistance. Synthetic materials are non-biodegrad...