PROBABILITY OF FORMATION OF A MOLECULE IN POLYDISPERSE POLYETHYLENES

In the present work, a mathematical procedure to determine the probabi lity of formation of a tie molecule in polydisperse polyethylenes in t erms of the basic morphological parameters, has been solved. The calcu lation of the number of tie molecules is based on the values of the mo lecular weight and the long period. The thickness of the lamellae and the long period were determined as functions of the branch density. Pr obability of formation of a tie molecule in polydisperse system to dif ferent comercial grades of high density polyethylene, has been obtaine d. This results have been compared with monodisperse data system.