Polymer melts Critical Molecular weight Mwe of a polymer Mw Mwe;no ofmolten polymer is almost directly proportional to the weight average molecular weight Mww hw>hwe;ηoiS .4 7。=K[Mw,e]Polymer melts Critical Molecular weight Mwe of a polymer Mw < Mwe ; ho of molten polymer is almost directly proportional to the weight average molecular weight Mww Mw > Mwe ; ho is ho = K[Mww ] 3.4