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Analysis of the flow behavior of HDPE/LDPE blends using a kinetic network model
Author(s) -
Manero O.,
RangelNafaile C.,
GarcíaRejón A.
Publication year - 1987
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1987.070330617
Subject(s) - low density polyethylene , shearing (physics) , materials science , rheology , high density polyethylene , polyethylene , flow (mathematics) , kinetic energy , polymer blend , polymer , thermodynamics , relaxation (psychology) , flow properties , composite material , copolymer , mechanics , physics , psychology , quantum mechanics , social psychology
Theoretical predictions of the flow behavior of high and low‐density polyethylene polymer blends have been obtained using the kinetic network model proposed by Williams et al. The results show that this model can be used even in the case of polydisperse components having similar relaxation spectra. Furthermore, in order to obtain meaningful predictions, the characterization of the complete system (blends and pure components) should be carried out on samples with the same thermomechanical history. Experimental data show that the shearing history influences the rheological properties of the pure homopolymers to a measurable and significant degree and that it has to be taken into account when these properties are used to predict the flow behavior of their blends.