Conformational, optical, electro-optical, and dynamic characteristics of cross-linked poly(N-acryloyl-11-aminoundecanoic acid)

Abstract

Polymerizable surfactants now attract a great interest due to high potential of their practical application as components of pseudostationary phase in micellar chromatography, drug carriers, and "building blocks" for molecular design of nanoparticles and nanostructured polymer materials, for encapsulation of various biological preparations. In the present work, we have studied poly(N-acryloyl-11-aminoundecanoic acid) (cross-linked comb-like polymer). Cross-linked polymers were obtained via copolymerization of the surfactant bearing double bond in hydrophobic tail with hydrophobic bifunctional cross-linker in micellar solution. Of special interest was the comparison between cross-linked and non-cross-linked polymers and influence of alkaline medium on characteristics of these samples. Non-cross-linked polymers were obtained by hydrolysis of the cross-linked product (treating with NaOH). The mixture of cyclohexanol and dioxane (1:1 volume ratio) was used as a solvent. Detailed studies of the obtained polymers by viscometry, dynamic light scattering, flow birefringence, and equilibrium and nonequilibrium electric birefringence were performed. It was established that during cross-linking process, two types of bonds are formed (the ones inside individual molecules and between several polymer chains). It was shown that crosslinked macromolecular nanoparticles can be transformed into comb-like polymers.

Colloid solution of surfactant monomers and polyelectrolyte: Polymerization and properties of the resulting interpolyelectrolyte complexes

“…The experiments were performed using LCsolution software; the obtained results were subsequently processed by the GPC-Postrun Analysis program. Dynamic light scattering (DLS) and static light scattering (SLS) are very efficient in the analysis of molecular characteristics of polymers, PECs and IPECs [8,[14][15][16][17][18][19][20]. The "PhotoCor-Complex" setup (Photocor Instruments Inc., Moscow, Russia) was used in light scattering experiments; the spectrometer was equipped with a real-time correlator (288 channels, 10 ns).…”

Influence of conformations of flexible-chain polymers on changes in polarization in an inhomogeneous temperature field

“…Запишем интеграл состояния (3) в системе K 1 : (6) где q n -заряд n-го кинетического фрагмента макромолекулы.…”

Conformational Approach to Determining the Polarization of Polyethylene Oxide During Melt-Crystal Transitions in a Non-Uniform Temperature Field

“…Based on PEO, lubricants, cutting fluids, solvents, anti-caking additives for bulk materials are produced, and they are also used in the conservation of wet wood [1][2][3][4]. Therefore, the study of its supramolecular structure to create materials with certain properties does not lose its relevance [5][6].…”