Absolute characteristics and conformation of cationic polymers by hydrodynamic approaches: Poly(AEMA-co-MAEMA-co-DMAEMA) copolymers

Incentives of Using the Hydrodynamic Invariant and Sedimentation Parameter for the Study of Naturally- and Synthetically-Based Macromolecules in Solution

“…Color and symbol assignments for naturally-based macromolecules: Black-Rigid, Xanthan (squares) [25], Chitosan (circles) [26,27], Schizophyllan (triangles up) [28]; Blue-Semi-Flexible, Pectin (squares) [29,30], Chitosan (circles) [31][32][33][34], Chitin (triangles up) [35], Cellulose (triangles down) [12,[36][37][38][39][40][41], Heparin (diamonds) [42], Ficoll400 (triangles left) [43]; Green-Flexible, Glucan (squares) [44], Mannan (circles) [45], Pullulan (triangles up) [46], Carrageenan (triangles down) [47], Polyvinylsaccharide (diamonds) [48,49]; Red-Branched, Glucan (squares) [50], Lysin (circles) [51]. Color and symbol assignments for synthetically-based macromolecules: Blue-Semi-Flexible, Polyelectrolyte (squares), cationic [52]; Green-Flexible, Polyelectrolyte (squares), cationic [53][54][55][56][57][58][59][60][61][62], anionic [63], Poly(ethylene) glycol (PEG) (circles) [14], Poly(2-alkyl-2-oxazoline) (POx)/Poly(oligo(2-ethyl-2-oxazoline)) based polymers (triangles up) [13,…”

“…Color and symbol assignments of naturally-based macromolecules: Black-Rigid, Xanthan (squares) [25], Schizophyllan (triangles up) [28]; Blue-Semi-Flexible, Pectin (squares) [29,30], Chitosan (circles) [31,33,34], Chitin (triangles up) [35], Cellulose (triangles down) [12,[38][39][40][41]77], Heparin (diamonds) [42]; Green-Flexible, Mannan (circles) [45,78], Pullulan (triangles up) [46], Carrageenan (triangles down) [47]. Color and symbol assignments of synthetically-based macromolecules: Green-Flexible, Polyelectrolyte (squares), cationic [55,59,60], POx (triangles up) [13,65], amide containing vinyl copolymers (triangles down) [66,67], PEI (diamonds) [68], Polyvinylpyrrolidone (triangles left) [69]; Red-Branched, PEG copolymers (squares) [24].…”

“…Polyelectrolytes are inherently difficult to study. The sufficient compensation of macromolecular backbone charge effects, necessary to reduce difficulties in the measurements by sedimentation velocity experiments and the typically observed non-linearity of the Huggins-and Kraemer extrapolation procedures for estimations of the intrinsic viscosity, [η], are critical [54,55,68]. At present, the detailed hydrodynamic study and interrelation of hydrodynamic characteristics within the framework of the hydrodynamic invariant, A 0 (Equation (12)), or sedimentation parameter, β s (Equation 14), are still awaiting validation and establishment.…”

Stabilization of Silver Nanoparticles by Cationic Aminoethyl Methacrylate Copolymers in Aqueous Media—Effects of Component Ratios and Molar Masses of Copolymers

“…It is possible to reduce the dispersity of stabilizing polymers using controlled radical polymerization such as the reversible addition-fragmentation chain transfer (RAFT) process. This approach enables the synthesis of polymers with sufficiently narrow molar mass distributions [24,25,26].…”

“…The goal of the present work was to investigate the capability of cationic copolymer poly((2-aminoethyl)methacrylate- co - N -methyl(2-aminoethyl)methacrylate- co - N , N -dimethyl(2-aminoethyl)meth¬acrylate), synthesized by RAFT polymerization [25], for stabilization of dispersions of silver NPs in an aqueous medium. Besides, we intended to achieve a decrease in size polydispersity of the samples and to improve the spectral characteristics of the stabilized nanoparticles.…”