Journal article

HOW POWERFUL ARE COMPOSITION DATA IN DISCRIMINATING BETWEEN THE TERMINAL AND PENULTIMATE MODELS FOR BINARY COPOLYMERIZATION

G MOAD, DH SOLOMON, TH SPURLING, RA STONE

MACROMOLECULES | AMER CHEMICAL SOC | Published : 1989

Abstract

The terminal model for binary copolymerization is often accepted simply on the grounds that it provides a satisfactory fit to a set of experimental data. The penultimate (and other) models are often not considered or are rejected as making no significant improvement. It is argued that such inferences are invalid unless reference is made to the power of the experiments in estimating penultimate unit effects. A method for assessing the possible magnitude of penultimate unit effects in binary copolymerization is offered. This involves using a nonlinear least-squares method to fit the penultimate model and constructing an approximate 95% joint confidence interval for r1/r1’ and r2/r2’. The metho..

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University of Melbourne Researchers