Lattice-fluid theory prediction of high-density polyethylene-branched polyolefin blend miscibility

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Polyolefin blend miscibility is very important for a number of technological applications. Its experimental measurement is far from trivial and requires highly sophisticated expensive experimental techniques. In this work, the lattice-fluid theory of Sanchez and Lacombe is used to calculate the phase equilibria of binary polyolefin blends. The miscibility of high-density polyethylene with three branched polyolefins is computed as a function of polymer chain size and architecture, temperature, and pressure. The binary interaction parameter of the model is fitted to experimental data for the high-density polyethylene-poly(ethylene-alt-propylene) and used for all the blends examined. Lattice-fluid theory predictions are in qualitative agreement with limited experimental data available and with predictions from other theoretical models. The proposed relatively simple methodology can be used as a guideline to determine the phase behavior of polyolefin blends.

Original languageEnglish
Pages (from-to)4954-4960
Number of pages7
JournalMacromolecules
Volume33
Issue number13
DOIs
Publication statusPublished - 27 Jun 2000
Externally publishedYes

Fingerprint

Signal filtering and prediction
Polyolefins
Polyethylene
High density polyethylenes
Solubility
Fluids
Phase behavior
Phase equilibria
Propylene
Polymers
Ethylene
PL 732
Temperature

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

Lattice-fluid theory prediction of high-density polyethylene-branched polyolefin blend miscibility. / Economou, Ioannis.

In: Macromolecules, Vol. 33, No. 13, 27.06.2000, p. 4954-4960.

Research output: Contribution to journalArticle

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