title: Pearson-type I distribution function for polydisperse polymer systems. Molar mass distribution.
abstract: This paper presents an attractive feature of the distribution function, which uses a relatively simple expression for approximating probability density. The Pearson-type I distribution function is used to represent the molar mass distribution (MMD) function for polymers for which the number average (M(n)), mass average (M(w)), z-average (M(z)), and (z+1)-average (M(z)(+1)) values are available. In continuation, the Pearson-type I distribution is applied as the model MMD function in which model parameters (M(n), M(w), M(z), and M(z)(+1)) are fitted from experimentally determined MMD. As the result, different molar mass averages are estimated with satisfactory agreement with experimental data.
authors.affiliation: INA--Industrija nafte, d.d., Strategic Development, Research and Investment Sector, Lovincićeva b.b., 10002 Zagreb, POB 555, Croatia. grozdana.bogdanic@zg.tel.hr
authors.forename: Grozdana
authors.initials: G
authors.lastname: Bogdanić
authors.forename: Lajos
authors.initials: L
authors.lastname: Jakab