0309062 - ÚCHP 2009 RIV FR eng C - Conference Paper (international conference)
Wichterle, Ivan - Bogdanić, G. - Erceg-Kuzmić, A.
Determination and Evaluation of Phase Equilibrium Data in Polymer + Solvent Systems.
[Měření a vyhodnocení dat o fázových rovnováhách polymer + solvent.]
Proceedings. Cannes: Institut National Polytechnique de Lorraine, 2008 - (Jaubert, J.), s. 147-148. ISBN N.
[23rd European Symposium on Applied Thermodynamics. Cannes (FR), 29.05.2008-01.06.2008]
R&D Projects: GA ČR GA104/07/0444
Institutional research plan: CEZ:AV0Z40720504
Keywords : flow improver * vapor-liquid equilibria * polymer systems
Subject RIV: CF - Physical ; Theoretical Chemistry

Flow improvers are able to improve significantly flow properties of transported material. It was found that one class of efficient additives consists of copolymers and terpolymers synthesized by polymerization of long chain methacrylates with styrene and (meth)acrylic acid and styrene or 1-vinyl-2-pyrrolidone. For future development of better additives, the group contribution method represents a powerful tool; however the evaluation of particular group increments must be based on thermodynamic data on systems which are not hitherto available. In this work, liquid–vapor equilibria were determined ebulliometrically for several systems consisting of the above mentioned terpolymer + organic solvent at different temperatures and pressures.

Fázové rovnováhy byly měřeny v systémech kopolymerů a terpolymerů připravených poymerizací metakrylátů s dlouhým řetězcem, styrenu a kyseliny akrylové nebo 1-vinyl-2-pyrrolidonu. Jako erozpouštědlo byly zvoleny toluen, hexan nebo chloroform. Data byla korelována a predikována příspěvkovými metodami: entropický FV-model, GC-Flory EOS a GC-LF-EOS.
Permanent Link: http://hdl.handle.net/11104/0161308