Terms sourced from: http://iupac.org/publications/pac/68/12/2313/

"Definitions of terms relating to degradation, aging, and related chemical transformations of polymers (IUPAC Recommendations 1996)", Hatada, K.;Fox, R.B.;Kahovec, J.;Maréchal, E.;Mita, I.;Shibaev, V.P., Pure and Applied Chemistry 1996, 68(12), 2313