Conformations of molecular brushes based on polyimide and poly(methyl methacrylate) in selective solvents: Experiment and computer simulation

Филиппов, А. П.; Belyaeva, E. V.; Krasova, Anna; Simonova, Maria; Мелешко, Т. К.; Ilgach, D. M.; Богорад, Н. Н.; Yakimansky, Alexander V.; Larin, Sergey V.; Darinskii, A. A.

doi:10.1134/s0965545x14040075

Cited by 28 publications

(17 citation statements)

References 44 publications

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“…Therefore, it may be suggested that the shape of PI‐g‐PS macromolecules differs slightly from spherical one. This conclusion is in a good agreement with results of computer simulations carried out for graft‐copolymers with a PI backbone and PMMA side chains …”

Section: Resultssupporting

confidence: 89%

“…(c)]. This conclusion agrees qualitatively with results of computer simulations for PI‐g‐PMMA graft copolymer …”

Section: Resultssupporting

confidence: 87%

“…For example, graft‐copolymers with polyimide (PI) backbones and poly (methyl methacrylate) side chains were synthesized, and their solution properties in selective solutions were studied . Experimental results were compared to those obtained by computer simulations . It was shown that in solutions of copolymers with a low grafting density z (the number of grafted side chains per one repeat unit of the backbone) and relatively short side chains, supermolecular structures are formed as a result of interactions between PI backbones which are not completely shielded by side chains.…”

Section: Introductionmentioning

confidence: 99%

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Solution behavior of polyimide‐graft‐polystyrene copolymers in selective solvents

Филиппов

Belyaeva

Мелешко

et al. 2014

J Polym Sci B Polym Phys

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A polyimide-graft-polystyrene (PI-g-PS) copolymer with a polyimide backbone and polystyrene side chains was synthesized by the "grafting from" method using styrene polymerization on a polyimide multicenter macroinitiator via ATRP mechanism. The side chain grafting density z 5 0.86 of PI-g-PS is rather high for graft-copolymers synthesized by the ATRP method. Molecular characteristics and solution behavior of PIg-PS were studied in selective solvents using light scattering and viscometry methods. In all solvents, the backbone tends to avoid contact with a poor solvent. To describe the conformation and hydrodynamic properties of PI-g-PS macromolecules in thermodynamically good solvents for side chains and PI-g-PS, the wormlike spherocylinder model is used. Macromolecules of the studied graft-copolymer are characterized by high equilibrium rigidities (Kuhn segment length >20 nm). In Hconditions, PI-g-PS macromolecules may be modeled by a rigid prolate ellipsoid of revolution with a low asymmetry form and a collapsed backbone as the ellipsoid core.

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Section: Resultssupporting

confidence: 89%

“…(c)]. This conclusion agrees qualitatively with results of computer simulations for PI‐g‐PMMA graft copolymer …”

Section: Resultssupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

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Solution behavior of polyimide‐graft‐polystyrene copolymers in selective solvents

Филиппов

Belyaeva

Мелешко

et al. 2014

J Polym Sci B Polym Phys

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“…In selective solvents of various thermo dynamic qualities for the backbone and side chains, such polyimide brushes assume conformations of a more or less elongated ellipsoid of revolution [142,143] or form a nearly spherical core-shell structure with the collapsed backbone (core) surrounded by side chains protruding into the solution [143], as con firmed by the computer simulation method [144].…”

Section: Polymer Brushes With Non Carbon Chain Backbonesmentioning

confidence: 99%

Methods of controlled radical polymerization for the synthesis of polymer brushes

2015

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Methods for the synthesis of polymer (molecular) brushes via various controlled radical poly merization approaches are considered, and their properties are analyzed. Special attention is paid to atom transfer radical polymerization, which is most frequently used for these purposes. The potential of the syn thesis of molecular brushes with various chemical structures, including amphiphilic brushes, is demonstrated in many examples.

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“…Furthermore, the conformation of grafted macromolecules depends on the solvent thermodynamic quality with respect to the side chains and the backbone . The influence of this factor is more essential for molecular brushes which are built of blocks differing strongly in chemical natures.…”

Section: Introductionmentioning

confidence: 99%

Solution properties of comb-like polymers consisting of dimethylsiloxane monomer units

et al. 2016

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Conformations of molecular brushes based on polyimide and poly(methyl methacrylate) in selective solvents: Experiment and computer simulation

Cited by 28 publications

References 44 publications

Solution behavior of polyimide‐graft‐polystyrene copolymers in selective solvents

Solution behavior of polyimide‐graft‐polystyrene copolymers in selective solvents

Methods of controlled radical polymerization for the synthesis of polymer brushes

Solution properties of comb-like polymers consisting of dimethylsiloxane monomer units

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