Kinetics of anionic polymerization of β‐myrcene in hydrocarbon solvents

Polymer International, Год журнала: 2025, Номер unknown

Опубликована: Май 1, 2025

Abstract The kinetics of anionic polymerization β‐myrcene initiated by sec ‐butyllithium were examined in saturated and unsaturated hydrocarbon solvents, i.e. cyclohexane, cyclohexene, 4‐vinylcyclohexene dl ‐limonene. Polymerizations usually proceeded a living manner, the absence termination chain transfer reactions, all to produce well‐defined polymyrcenes with high content (>85%) cis ‐1,4 units. However, polymyrcenyllithium chains exhibited limited long‐term stability solution, most probably due solvent. Reaction orders respect concentration active found be one‐quarter cyclohexane increasing one‐half indicating that are present as tetrameric or dimeric associates, respectively. Apparent activation energies 81 kJ mol −1 77 ‐limonene which close values obtained quantum chemical calculations. © 2025 Author(s). Polymer International published John Wiley & Sons Ltd on behalf Society Chemical Industry.

Язык: Английский

Solvent and Temperature Effects in the Photoiniferter RAFT Polymerisation of PEG Methacrylate

Polymer Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Photoiniferter (PI)-RAFT polymerisation is a promising approach to synthesise broad range of polymers due its' "living" nature. We have investigated the effect illumination, solvent and temperature on PI-RAFT PEGMA.

Язык: Английский