Poly(tetrahydropyranyl-2-methyl methacrylate): Comparative study in solution and at the air/water interface

New three-arm amphiphilic and biodegradable block copolymers composed of poly(ε-caprolactone) and poly(N-vinyl-2-pyrrolidone). Synthesis, characterization and self-assembly in aqueous solution

“…For all three copolymers, about 20% of the population had a mean diameter of about 11.0 ± 3.0 nm and the remaining 80% a diameter of 37 ± 5 nm. The first value is very close to the estimated radius for an isolated polymeric chain based on the values of the intrinsic viscosity and the assumption of a spherical hydrodynamic volume [23][24][25] and the latter value (37 nm) is significantly larger. Therefore, the larger size fraction of the population corresponds to supramolecular structures formed by an intermolecular aggregation process.…”

“…ample of the size distribution obtained for cop1 in water solution by dynamic light scattering, the means diameter, percent of each population and means diffusion coefficients obtained by this technique are summarized in Table 2. The measurements were made at a copolymer concentration of 0.8 g/dL, which is in the dilute regime, well below the overlap concentration estimated from the inverse of the intrinsic viscosity which is considered the limit between the diluted and semidiluted regimes [23]. In all cases, similar bimodal distributions were observed.…”

Polymers containing phtalimidoalkyl groups in the side chains. effect of the alkyl groups in monolayers at the airwater interface

“…Polymer films find industrial applications in liquid-liquid extraction, stabilization of colloids and Langmuir-Blodgett films, while spread monolayers have been used and investigated as two-dimensional systems model of membranes. Numerous studies of insoluble polymer Langmuir monolayers have been devoted to neutral polymers such as poly(itaconate)s and poly(methacrylate)s and their copolymers [6][7][8]. However, scarce information is available on spread monolayers of poly (methacrylate)s with bulky side groups in the lateral chains.…”