For a linear polymer molecule, the total chain length L depends on the bond length between chain atoms d, the total number of bonds in the molecule N, and the angle between adjacent backbone chain atoms , as follows: 0 L = Nd sin (9) (14.11) Furthermore, the average end-to-end distance for a series of polymer molecules r is equal to: r = For a linear polytetrafluoroethylene determine: (a) the number-average molecular weight for L= 1000 nm; M = Mn i M = Mn = dN (b) the number-average molecular weight for r = 13 nm. T. g/mol g/mol (14.12)

For a linear polymer molecule, the total chain length L depends on the bond length between chain atoms d, the total number of bonds in the molecule N, and the angle between adjacent backbone chain atoms , as follows: L=Ndsin(2) Furthemore, the average end-to-end distance for a series of polymer molecules r is equal to: r=dN For a linear polytetrafluoroethylene determine: (a) the number-average molecular weight for L=1000nm; Mn=g/mol (b) the number-average molecular weight for r=13nm. Mn=