Single sample methods for estimating the parameters of the Mark-Houwink equation

Abstract

With 5 tables SynopsisThree methods are given for estimating the values of the parameters K M and a in the Mark-Houwin/c equationfrom measurements of the solution proparties of a single polymer sample and knowledge of certain molecular parameters for the polymer. Method A involves measurement of intrinsic viscosity [~]] and molecular weight M; Method B measurement of [V], M and the second virial coefficient A2; method C measurement, of A 2 and M. The methods are based on existing theories and both excluded volume and partial draining effects are considered. Examples from the literature are used to test the methods. The scope and limitations of the methods are discussed and it is concluded that they are applicable to many polymers if precautions are taken with respect to polydispersity and other factors.