Modulation of Solvent Properties Using Imidazolium-Based Ionic Liquids: Effects on the Thermodynamics of PEO-PPO-PEO Triblock Copolymer Aggregation.

ABSTRACT: Differential scanning calorimetry, isothermal titration calorimetry, fluorescence spectroscopy, and dynamic light scattering were used to investigate the temperature- and concentration-induced aggregation of PEO-PPO-PEO triblock copolymers (L31, L81, L64, P123, and F127) in aqueous solutions of 1-butyl-3-methylimidazolium halides (C₄mimX, X = Cl^- or Br^-) and sodium chloride (NaCl), establishing a comparative energetic and structural framework for understanding how they modulate triblock copolymer self-assembly. The critical micellization temperature decreased in the presence of cosolutes following the order NaCl < C₄mimCl < C₄mimBr, while the critical micellar concentration increased with C₄mimX (C₄mimCl < C₄

SUBMITTER: Patino-Agudelo AJ 

PROVIDER: S-EPMC12529128 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature