### Abstract

The (liquid + liquid) equilibrium of solutions of hyperbranched polyesters is calculated with the latticecluster theory (LCT) combined with a chemical association model. The considered solvents are n-alkanes as well as propan-1-ol and butan-1-ol. The structure of the solvents is also considered in the framework of the LCT, assuming the solvent molecules as linear chains of several segments. For polymer solutions with the non-associating n-alkanes only the self association of the hyperbranched polymer molecules has to be considered by the chemical association lattice model (CALM). For the solutions of the type alcohol + hyperbranched polymer additionally the cross association is taken into account by a modified version of the extended chemical association lattice model (ECALM). The association effects are proved to influence strongly the phase equilibrium. Calculating the cloud-point curve and the critical point the polydispersity of the polymer samples is neglected. There is a reasonable agreement of the calculated curves with the experimental data taken from the literature.

Originalsprache | englisch |
---|---|

Seiten (von - bis) | 1969-1976 |

Seitenumfang | 8 |

Fachzeitschrift | The Journal of Chemical Thermodynamics |

Jahrgang | 43 |

Ausgabenummer | 12 |

DOIs | |

Publikationsstatus | Veröffentlicht - Dez 2011 |

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### ASJC Scopus subject areas

- !!Physical and Theoretical Chemistry
- !!Atomic and Molecular Physics, and Optics
- !!Materials Science(all)

### Dies zitieren

*The Journal of Chemical Thermodynamics*,

*43*(12), 1969-1976. https://doi.org/10.1016/j.jct.2011.07.010

**Calculation of the (liquid + liquid) equilibrium of solutions of hyperbranched polymers with the lattice-cluster theory combined with an association model.** / Zeiner, T.; Browarzik, C.; Browarzik, D.; Enders, S.

Publikation: Beitrag in einer Fachzeitschrift › Artikel › Forschung › Begutachtung

*The Journal of Chemical Thermodynamics*, Jg. 43, Nr. 12, S. 1969-1976. https://doi.org/10.1016/j.jct.2011.07.010

}

TY - JOUR

T1 - Calculation of the (liquid + liquid) equilibrium of solutions of hyperbranched polymers with the lattice-cluster theory combined with an association model

AU - Zeiner, T.

AU - Browarzik, C.

AU - Browarzik, D.

AU - Enders, S.

PY - 2011/12

Y1 - 2011/12

N2 - The (liquid + liquid) equilibrium of solutions of hyperbranched polyesters is calculated with the latticecluster theory (LCT) combined with a chemical association model. The considered solvents are n-alkanes as well as propan-1-ol and butan-1-ol. The structure of the solvents is also considered in the framework of the LCT, assuming the solvent molecules as linear chains of several segments. For polymer solutions with the non-associating n-alkanes only the self association of the hyperbranched polymer molecules has to be considered by the chemical association lattice model (CALM). For the solutions of the type alcohol + hyperbranched polymer additionally the cross association is taken into account by a modified version of the extended chemical association lattice model (ECALM). The association effects are proved to influence strongly the phase equilibrium. Calculating the cloud-point curve and the critical point the polydispersity of the polymer samples is neglected. There is a reasonable agreement of the calculated curves with the experimental data taken from the literature.

AB - The (liquid + liquid) equilibrium of solutions of hyperbranched polyesters is calculated with the latticecluster theory (LCT) combined with a chemical association model. The considered solvents are n-alkanes as well as propan-1-ol and butan-1-ol. The structure of the solvents is also considered in the framework of the LCT, assuming the solvent molecules as linear chains of several segments. For polymer solutions with the non-associating n-alkanes only the self association of the hyperbranched polymer molecules has to be considered by the chemical association lattice model (CALM). For the solutions of the type alcohol + hyperbranched polymer additionally the cross association is taken into account by a modified version of the extended chemical association lattice model (ECALM). The association effects are proved to influence strongly the phase equilibrium. Calculating the cloud-point curve and the critical point the polydispersity of the polymer samples is neglected. There is a reasonable agreement of the calculated curves with the experimental data taken from the literature.

KW - (Liquid + liquid) equilibrium

KW - Chemical association model

KW - Hyperbranched polymer solutions

KW - Lattice-cluster theory

KW - Method of calculation

UR - http://www.scopus.com/inward/record.url?scp=84861807952&partnerID=8YFLogxK

U2 - 10.1016/j.jct.2011.07.010

DO - 10.1016/j.jct.2011.07.010

M3 - Article

VL - 43

SP - 1969

EP - 1976

JO - The Journal of Chemical Thermodynamics

JF - The Journal of Chemical Thermodynamics

SN - 0021-9614

IS - 12

ER -