'Periodica Polytechnica Budapest University of Technology and Economics'
Abstract
A series of experiments was carried out to develop an additive package for HDPE blown
films. The evaluation of the results yielded interesting correlations relating the colour
of the polymer to its chain structure and to the properties of the films. Additional experiments
proved that all reactions are related to each other. The discolouration of the
polymer could be described by simple first order reaction kinetics and a linear correlation
was found between stability and a quantity calculated from the kinetic model. The
reaction of the vinyl functionality of the polymer seems to be related to the changes in
its rheological properties. In spite of the good general correlations found, some details
remained unexplained and need further investigation