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Molecular Weight.

Initial observations.

• The difference between regular Low MW compounds (benzene or water) and polymers in terms of their MW. Distributions of mw. Average can be defined in many ways:

                                                        å X M _x

Number average, < M _n> = ¾ ¾ ¾ -¾ ¾

                                                        å X

                                                    å X M_x²

and weight average <M _w>= ¾ ¾ ¾ ¾

                                                    å X M _x

x is the degree of polymerization, M_x is mw corresponding to x, X is the corresponding number of molecules.