ABSTRACT
It is the size of macromolecules that gives them their unique and useful properties. Size allows polymers to act more as a group so that when one polymer chain moves, surrounding chains are aected by that movement. Size also allows polymers to be nonvolatile since the secondary attractive forces are cumulative (for instance, London dispersion forces are about 8 kJ/mol per repeat unit), and because of the shear size, the energy necessary to volatilize them is sucient to degrade the polymer.
