Kinetic study of the thermal degradation of high density polyethylene


Autoria(s): Bhatia, S. K.; Wallis, M. D.
Contribuinte(s)

N. C. Billingham (Editor-in-Chief)

Data(s)

01/01/2006

Resumo

The thermal degradation of high density polyethylene has been modelled by the random breakage of polymer bonds, using a set of population balance equations. A model was proposed in which the population balances were lumped into representative sizes so that the experimentally determined molecular weight distribution of the original polymer could be used as the initial condition. This model was then compared to two different cases of the unlumped population balance which assumed unimolecular initial distributions of 100 and 500 monomer units, respectively. The model that utilised the experimentally determined molecular weight distribution was found to best describe the experimental data. The model fits suggested a second mechanism in addition to random breakage at slow reaction rates. (c) 2005 Elsevier Ltd. All rights reserved.

Identificador

http://espace.library.uq.edu.au/view/UQ:80278

Idioma(s)

eng

Publicador

Elsevier Sci Ltd

Palavras-Chave #Polymer Science #Degradation #Thermogravimetric Analysis #Polyethylene #Population Balance #Polymer Thermogravimetric Analysis #Linear-polymers #Random Scission #Chain-end #C1 #290699 Chemical Engineering not elsewhere classified #660501 Energy transformation #290000 Engineering and Technology #290600 Chemical Engineering #290602 Process Control and Simulation
Tipo

Journal Article