Biodegradable polymers from poultry feathers

02-Apr-07

The growing environmental problem of plastic waste seems to have found yet another solution, besides biodegradable plastics from agricultural byproducts, in the form of biodegradable polymers created from poultry feathers and eggs that don't pass inspection. These agricultural wastes currently find uses in low-value animal feed or are simply disposed. Both come at a cost to the poultry industry that is passed onto consumers. Currently, the research is investigating the properties of polymers created from poultry feather keratin that is a major component of hair, nails, and feathers and makes them hard and strong. It has been found that altering the amino acid structure of keratin can improve the strength and longevity of the polymer. The viscosity can be improved with reducing agents such as sodium sulfite and lubricants such as poultry fat. The solid-state properties can also be modified using divalent transition metal ions to affect stiffness and smell. These will help the keratin polymer be processed faster, be more aesthetically pleasing, and become water resistant and stronger for increased longevity.