Intramolecular Polycomplexes in Block and Graft Copolymers

“…The monomer was twice re-crystallized from chloroform before a synthesis. All syntheses were carried out in the deionized water using a template radical block copolymerization, in which PEO radicals formed by Red/Ox reaction between terminal hydroxyl groups of PEG and Ce IV ions participated [45]. The molar ratio of…”

Section: (Co)polymer Synthesesmentioning

confidence: 99%

“…We consider that the application of the PEOcontaining intramolecular polycomplexes (IntraPCs) [45] as polymeric matrices is essentially more perspective. These IntraPCs are formed in macromolecules of the double hydrophilic block and graft copolymers with chemically complementary components and combine properties of both the blocktype copolymers and InterPCs.…”

Section: Introductionmentioning

confidence: 99%

“…Interacting components are additionally fixed in IntraPCs by covalent bond(s); due to this they can demonstrate higher stability in many competitive processes, which accompany the formation of multicomponent polymer electrolytes. Moreover, IntraPCs possess by high binding capability as InterPCs [45]. The interest to the PEO-containing IntraPCs sharply increased last decade [45,46] but their ionic conductivity was not practically investigated in the interrelationship with a bulk structure.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, IntraPCs possess by high binding capability as InterPCs [45]. The interest to the PEO-containing IntraPCs sharply increased last decade [45,46] but their ionic conductivity was not practically investigated in the interrelationship with a bulk structure.…”

Section: Introductionmentioning

confidence: 99%

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Nanostructured Triblock Copolymers with Chemically Complementary Components and Their Ionic Conductivity

Zheltonozhskaya¹

2013

J. Res. Updates Polym. Sci.

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A series of structural and electrochemical studies of the triblock copolymers (TBCs) based on poly(ethylene oxide) (Mn = 14 and 35 kDa) and polyacrylamide (PAAm-b-PEO-b-PAAm), which formed the intramolecular polycomplexes, were carried out using nuclear magnetic resonance, differential scanning calorimetry, wide-angle and small-angle X-ray scattering, and impedance spectroscopy. The combination of the amorphous mass-fractal-organized structure of the copolymers with high level of the ionic conductivity of pure TBCs and their compositions with the couple KI/I2 and LiPF6 salt was established. Possible reasons for the effects in the context of applications of TBC compositions in solar cells and lithium batteries are discussed.

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Block Copolymers of Polyacrilamide and Poly(ethylene oxide) as Nanocarriers for Drug Delivery: Micellization and Bulk Structure

Kunitskaya¹,

Zheltonozhskaya²,

Permyakova³

2012

Macromolecular Symposia

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The self-assembly of diblock copolymers series (DBC) of polyacrylamide and methoxypoly(ethylen oxide) (MOPEO-b-PAAm) with a variable length of both the blocks were studied in water and water-ethanol solutions. The tendency of DBCs to micellization in water-ethanol mixture grew with increased molecular weights of the blocks. The addition of NaCl resulted in increase of micellar stability, while the introduction of dimethylformamide (DMF) destructed DBC micelles. In DBC bulk structure, MOPEO blocks either lost or considerably reduced their ability of crystallization due to interaction with PAAm blocks. DBC micelles encapsulated anticancer drug doxorubicin (DOX) that led to lowering the crytical micellization concentration.a) The viscosity-average molecular weight of MOPEG from ''Fluka''. b) The weight fraction of MOPEO block in DBC. c) The ratio between the units in PAAm and PEO blocks.

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Intramolecular Polycomplexes in Block and Graft Copolymers

Cited by 14 publications

References 2 publications

Compositions of Anticancer Drug with Micellar Nanocarriers and Their Cytotoxicity

Compositions of Anticancer Drug with Micellar Nanocarriers and Their Cytotoxicity

Nanostructured Triblock Copolymers with Chemically Complementary Components and Their Ionic Conductivity

Block Copolymers of Polyacrilamide and Poly(ethylene oxide) as Nanocarriers for Drug Delivery: Micellization and Bulk Structure

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