Separation of Low Molecular Mass Fractions of Ultrafine Polytetrafluoroethylene by Supercritical Carbon Dioxide

2009, №2

сс. 4-15

Yu.E. Vopilov, L.N. Nikitin, A.R. Khokhlov, V.M. Buznik.

Key words: supercritical carbon dioxide, ultrafine polytetrafluoroethylene, solubility, Chrastil model, Mendez-Santjago model, Bartle model

The solubility and separation of low molecular mass fractions of ultrafine polytetrafluoroethylene (UPTFE) in supercritical carbon dioxide (SC-CO₂) are
measured using static method in the temperature and pressure ranges of 318÷383 K and 10÷70 MPa, respectively. The solubility isotherms follow the behavior typical for «solid.supercritical fluid» systems, i.e. the solubility increases with pressure, due to increasing of SC-CO₂ pressure, and temperature. The experimental data are discussed in terms of three different density-based models proposed by Chrastil, Bartle and Mendez-Santjago. It was concluded that two last models well predict the shape of experimentally observed dependences.

Next paper

Cite

ГОСТ
7.0.100-2018

Вопилов, Ю.Е. Separation of Low Molecular Mass Fractions of Ultrafine Polytetrafluoroethylene by Supercritical Carbon Dioxide / Ю.Е. Вопилов, Л.Н. Никитин, А.Р. Хохлов. – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2009. – Т. 4. – № 2. – С. 4-15.

TRANSLIT

Вопилов, Ю.Е. Separaciya nizkomolekulyarnyh frakcij ul'tradispersnogo politetraftoretilena sverhkriticheskim dioksidom ugleroda / Ю.Е. Вопилов, Л.Н. Никитин, А.Р. Хохлов. – Tekst : neposredstvennyj // Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2009. – Т. 4. – № 2. – S. 4-15.

Yu.E. Vopilov, L.N. Nikitin, A.R. Khokhlov, V.M. Buznik Separation of Low Molecular Mass Fractions of Ultrafine Polytetrafluoroethylene by Supercritical Carbon Dioxide. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 4-15 (2009). https://doi.org/

Separation of Low Molecular Mass Fractions of Ultrafine Polytetrafluoroethylene by Supercritical Carbon Dioxide

Cite

Поиск

Связаться с нами

Copied