Advanced functional polymer membranes

3.10 - Nitroxide-Mediated Polymerization

Polymeric membrane pervaporation

https://pure.mpg.de/pubman/item/item_1925102_4/component/file_1925101/562340.pdf

Poly(ionic liquid)s: Polymers expanding classical property profiles

Reversible addition–fragmentation chain transfer (RAFT) radical polymerization and the synthesis of water-soluble (co)polymers under homogeneous conditions in organic and aqueous media

Industrial state-of-the-art of pervaporation and vapour permeation in the western countries

https://www.eng.buffalo.edu/Courses/ce435/JonquieresClementLochon2002.pdf

Permeability of block copolymers to vapors and liquids

It has been found that sulfur dioxide solubility in organic solvents can be well-correlated by Lewis basicity numbers. Mixtures of sulfur dioxide and solvent (N-methylpyrrolidone (NMP), N,N‘-(dimethylpropylene)urea (DMPU) and methyldiethanolamine (MDEA)) have been prepared in a 1:1 mole ratio at low temperatures. The melting points of the mixtures are measured, and the mixtures have been analyzed by infrared, ultraviolet−visible, and nuclear magnetic resonance spectroscopy. The solubility of sulfur dioxide has been measured in NMP and DMPU at 25 °C. At sulfur dioxide concentrations of 0.2−0.6 kPa, the solubility is determined using a continuous stirred tank reactor. The absorption of sulfur dioxide proved to be completely reversible. A model where physical and chemical interactions are incorporated showed good correlation with the experimental results.

Selective Sulfur Dioxide Removal Using Organic Solvents

The free radical polymerization of 4-vinylpyridine (4VP), using 2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPO) radical as a capping agent, proved to proceed in a pseudo-living manner, providing low polydispersity P4VP whose chain growth could be controlled. The original nitroxide concentration was revealed to have no obvious influence on the rate of polymerization, whereas it could be directly related to the molecular weight of the polymer. The polydispersity was shown to increase within the range 1.02−1.50. The influence of temperature on the kinetics of the reaction was demonstrated, but no significant effect could be found on the molecular weights and polydispersities of the macromolecules.

Nitroxide-Mediated Radical Polymerization of 4-Vinylpyridine: Study of the Pseudo-Living Character of the Reaction and Influence of Temperature and Nitroxide Concentration

Pierre Lochon

Papers

Industrial state-of-the-art of pervaporation and vapour permeation in the western countries

Permeability of block copolymers to vapors and liquids

Selective Sulfur Dioxide Removal Using Organic Solvents

Nitroxide-Mediated Radical Polymerization of 4-Vinylpyridine: Study of the Pseudo-Living Character of the Reaction and Influence of Temperature and Nitroxide Concentration

Modelling of vapour sorption in polar materials: Comparison of Flory–Huggins and related models with the ENSIC mechanistic approach