1
|
Matrix free polymer nanocomposites from amphiphilic hairy nanoparticles: Solvent selectivity and mechanical properties. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125172] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
2
|
Glagolev MK, Glagoleva AA, Vasilevskaya VV. Microphase separation in helix-coil block copolymer melts: computer simulation. SOFT MATTER 2021; 17:8331-8342. [PMID: 34550153 DOI: 10.1039/d1sm00759a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
By means of molecular dynamics simulation, the process of the microphase separation in the melts of diblock helix-coil copolymers comprising a flexible and a helical block was studied. The resulting microstructures were examined, and the spatial distribution of the blocks and molecular packing were investigated. The phase diagram was built in terms of the fraction of the helical block and the incompatibility parameter of the blocks. The comparison of the diagrams for helix-coil and the classic coil-coil copolymer blends was carried out. It was shown that the total region where the ordering into distinctive microstructures takes place is similar for both diagrams. But for the helix-coil copolymers the area of the cylinders splits into the region of those with circular and elliptical cross-sections; the bicontinuous phase area is much wider; in the lamellar phases, the helical blocks were oriented precisely perpendicular to the lamellar interface, forming a cohesive interlocked structure of densely packed helices.
Collapse
Affiliation(s)
- M K Glagolev
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova ul. 28, Moscow 119991, Russia.
| | - A A Glagoleva
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova ul. 28, Moscow 119991, Russia.
| | - V V Vasilevskaya
- A. N. Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova ul. 28, Moscow 119991, Russia.
| |
Collapse
|
3
|
Ushakova AS, Lazutin AA, Vasilevskaya VV. Flowerlike Multipetal Structures of Nanoparticles Decorated by Amphiphilic Homopolymers. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00467] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Alexandra S. Ushakova
- A. N. Nesmeyanov Institute of Organoelement Compounds RAS, Vavilova ul., 28, Moscow 119991, Russia
| | - Alexei A. Lazutin
- A. N. Nesmeyanov Institute of Organoelement Compounds RAS, Vavilova ul., 28, Moscow 119991, Russia
| | | |
Collapse
|
4
|
Vasilevskaya VV, Govorun EN. Hollow and Vesicle Particles from Macromolecules with Amphiphilic Monomer Units. POLYM REV 2019. [DOI: 10.1080/15583724.2019.1599013] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Valentina V. Vasilevskaya
- A. N. Nesmeyanov Institute of Organoelement Compounds RAS, Moscow, Russia
- Department of Chemistry, M. V. Lomonosov Moscow State University, Moscow, Russia
| | - Elena N. Govorun
- Faculty of Physics, M. V. Lomonosov Moscow State University, Moscow, Russia
| |
Collapse
|
5
|
Lazutin A, Vasilevskaya VV. Lamellae-Parking Garage Structure-Lamellae Transition in Densely Grafted Layers of Amphiphilic Homopolymers: Impact of Polymerization Degree. ACS OMEGA 2018; 3:12967-12974. [PMID: 31458020 PMCID: PMC6709779 DOI: 10.1021/acsomega.8b01643] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 09/26/2018] [Indexed: 06/10/2023]
Abstract
By means of computer modeling, the self-organization of densely grafted macromolecules with amphiphilic monomer units as a function of macromolecular polymerization degree and solvent quality was studied and a diagram of state was constructed. The diagram contains fields of disordered distribution of monomer units and of prolonged aggregates, regions of lamellae with small and big domain spacing, and transition region. Within the transition region, the lamellae with different spacing coexist: the lamellae with big domain spacing are on the top of the grafting layer and the lamellae with small domain spacing are close to the grafting surface. The lamellae are connected with each other and form bicontinuous parking garage structure joining all side groups into a single cluster. The domain spacing of lamellae does not depend on the macromolecular length, but the width of the transition region decreases with the decrease of polymerization degree until total vanishing at relatively short macromolecules. The sharp switch between lamellae and bicontinuous structure opens the perspective for practical applications of densely grafted layers with amphiphilic monomer units.
Collapse
|
6
|
Sabater i Serra R, Torregrosa Cabanilles C, Meseguer Dueñas JM, Gómez Ribelles JL, Molina-Mateo J. Conformational Changes and Dynamics during Adsorption of Macromolecules with Different Degree of Polymerization Studied by Monte Carlo Simulations. MACROMOL THEOR SIMUL 2018. [DOI: 10.1002/mats.201800012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Roser Sabater i Serra
- Centre for Biomaterials and Tissue Engineering; Universitat Politècnica de València; 46022 València Spain
- CIBER-BBN; Biomedical Research Networking Centre in Bioengineering; Biomaterials and Nanomedicine; Valencia Spain
| | | | - José María Meseguer Dueñas
- Centre for Biomaterials and Tissue Engineering; Universitat Politècnica de València; 46022 València Spain
- CIBER-BBN; Biomedical Research Networking Centre in Bioengineering; Biomaterials and Nanomedicine; Valencia Spain
| | - José Luis Gómez Ribelles
- Centre for Biomaterials and Tissue Engineering; Universitat Politècnica de València; 46022 València Spain
- CIBER-BBN; Biomedical Research Networking Centre in Bioengineering; Biomaterials and Nanomedicine; Valencia Spain
| | - José Molina-Mateo
- Centre for Biomaterials and Tissue Engineering; Universitat Politècnica de València; 46022 València Spain
| |
Collapse
|
7
|
Polovnikov KE, Gumerov RA, Potemkin II. Stress-Induced Solvent Redistribution in Lamellae-Forming Diblock Copolymer Systems. Macromolecules 2016. [DOI: 10.1021/acs.macromol.6b01301] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kirill E. Polovnikov
- Physics
Department, Lomonosov Moscow State University, Moscow 119991, Russian Federation
| | - Rustam A. Gumerov
- Physics
Department, Lomonosov Moscow State University, Moscow 119991, Russian Federation
| | - Igor I. Potemkin
- Physics
Department, Lomonosov Moscow State University, Moscow 119991, Russian Federation
| |
Collapse
|
8
|
Gumerov RA, Rumyantsev AM, Rudov AA, Pich A, Richtering W, Möller M, Potemkin II. Mixing of Two Immiscible Liquids within the Polymer Microgel Adsorbed at Their Interface. ACS Macro Lett 2016; 5:612-616. [PMID: 35632381 DOI: 10.1021/acsmacrolett.6b00149] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report on the behavior of two immiscible liquids within polymer microgel adsorbed at their interface. By means of dissipative particle dynamics (DPD) simulations and theoretical analysis in the framework of the Flory-Huggins (FH) lattice theory, we demonstrate that the microgel acts as a "compatibilizer" of these liquids: their miscibility within the microgel increases considerably. If the incompatibility of the liquids is moderate, although strong enough to induce phase separation in their 1:1 composition, they form homogeneous mixture in the microgel interior. The mixture of highly incompatible liquids undergoes separation into two (micro)phases within the microgel likewise out of it; however, the segregation regime is weaker and the concentration profiles are characterized by a weaker decay (gradient) in comparison with those of two pure liquids. The enhanced miscibility is a result of the screening of unfavorable interactions between unlike liquid molecules by polymer subchains. We have shown that better miscibility of the liquids is achieved with densely cross-linked microgels. Our findings are very perspective for many applications where immiscible species have to be mixed at interfaces (like in heterogeneous catalysis).
Collapse
Affiliation(s)
- Rustam A. Gumerov
- Physics
Department, Lomonosov Moscow State University, Moscow 119991, Russian Federation
| | - Artem M. Rumyantsev
- Physics
Department, Lomonosov Moscow State University, Moscow 119991, Russian Federation
- DWI − Leibniz
Institute for Interactive Materials, Aachen 52056, Germany
| | - Andrey A. Rudov
- Physics
Department, Lomonosov Moscow State University, Moscow 119991, Russian Federation
- DWI − Leibniz
Institute for Interactive Materials, Aachen 52056, Germany
| | - Andrij Pich
- DWI − Leibniz
Institute for Interactive Materials, Aachen 52056, Germany
| | - Walter Richtering
- Institute
of Physical Chemistry, RWTH Aachen University, Aachen 52056, Germany
| | - Martin Möller
- DWI − Leibniz
Institute for Interactive Materials, Aachen 52056, Germany
| | - Igor I. Potemkin
- Physics
Department, Lomonosov Moscow State University, Moscow 119991, Russian Federation
- DWI − Leibniz
Institute for Interactive Materials, Aachen 52056, Germany
| |
Collapse
|
9
|
Lazutin AA, Govorun EN, Vasilevskaya VV, Khokhlov AR. New strategy to create ultra-thin surface layer of grafted amphiphilic macromolecules. J Chem Phys 2016; 142:184904. [PMID: 25978911 DOI: 10.1063/1.4920973] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
It was found first that macromolecules made of amphiphilic monomer units could form spontaneously an ultra-thin layer on the surface which the macromolecules are grafted to. The width of such layer is about double size of monomer unit consisting of hydrophilic A (repulsive) and hydrophobic (attractive) B beads. The hydrophilic A beads are connected in a polymer chain while hydrophobic B beads are attached to A beads of the backbone as side groups. Three characteristic regimes are distinguished. At low grafting density, the macromolecules form ultra-thin micelles of the shape changing with decrease of distance d between grafting points as following: circular micelles-prolonged micelles-inverse micelles-homogeneous bilayer. Those micelles have approximately constant height and specific top-down A-BB-A structure. At higher grafting density, the micelles start to appear above the single bilayer of amphiphilic macromolecules. The thickness of grafted layer in these cases is different in different regions of grafting surface. Only at rather high density of grafting, the height of macromolecular layer becomes uniform over the whole grafting surface. The study was performed by computer modeling experiments and confirmed in framework of analytical theory.
Collapse
Affiliation(s)
- A A Lazutin
- A. N. Nesmeyanov Institute of Organoelement Compounds RAS, Vavilova ul. 28, Moscow 119991, Russia
| | - E N Govorun
- Faculty of Physics, M. V. Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia
| | - V V Vasilevskaya
- A. N. Nesmeyanov Institute of Organoelement Compounds RAS, Vavilova ul. 28, Moscow 119991, Russia
| | - A R Khokhlov
- A. N. Nesmeyanov Institute of Organoelement Compounds RAS, Vavilova ul. 28, Moscow 119991, Russia
| |
Collapse
|
10
|
|
11
|
Stenbock-Fermor A, Rudov AA, Gumerov RA, Tsarkova LA, Böker A, Möller M, Potemkin II. Morphology-Controlled Kinetics of Solvent Uptake by Block Copolymer Films in Nonselective Solvent Vapors. ACS Macro Lett 2014; 3:803-807. [PMID: 35590704 DOI: 10.1021/mz500347n] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
We compare the swelling behavior of a compositionally symmetric diblock copolymer in films with nonbulk micellar morphology and with vertically oriented lamellae. The morphologies preformed by spin-coating from selective/nonselective solvents differ in shape and total area of the AB interfaces between incompatible units. Experimental measurements and dissipative particle dynamics (DPD) simulations demonstrate that AB interfaces dominate as the diffusion pathways of nonselective solvent molecules in strongly segregated films. In experiments, the lamellar films swell about 20× faster as compared to densely packed micellar structures, while the degrees of swelling at saturation are equal for the two types of morphologies. The difference in the kinetics of solvent uptake vanishes as soon as the solvent plasticizing effect allows for micelles-to-lamellae transition. DPD simulations confirm the inhomogeneous distribution of the solvent inside the film, with the higher fraction of the solvent localized at the AB interface and reveal morphology-dependent kinetics of the solvent uptake. The effect of dissimilar abilities of the nanodomains and of AB interface to serve as diffusion pathways for small molecules may find potential in designing nanosensors and heterogeneous barrier layers.
Collapse
Affiliation(s)
| | - Andrey A. Rudov
- DWI − Leibniz-Institut für Interaktive Materialien, Aachen 52056, Germany
- Physics
Department, Lomonosov Moscow State University, Moscow 119991, Russian Federation
| | - Rustam A. Gumerov
- Physics
Department, Lomonosov Moscow State University, Moscow 119991, Russian Federation
| | - Larisa A. Tsarkova
- DWI − Leibniz-Institut für Interaktive Materialien, Aachen 52056, Germany
| | - Alexander Böker
- DWI − Leibniz-Institut für Interaktive Materialien, Aachen 52056, Germany
| | - Martin Möller
- DWI − Leibniz-Institut für Interaktive Materialien, Aachen 52056, Germany
| | - Igor I. Potemkin
- DWI − Leibniz-Institut für Interaktive Materialien, Aachen 52056, Germany
- Physics
Department, Lomonosov Moscow State University, Moscow 119991, Russian Federation
| |
Collapse
|
12
|
Rudov AA, Patyukova ES, Neratova IV, Khalatur PG, Posselt D, Papadakis CM, Potemkin II. Structural Changes in Lamellar Diblock Copolymer Thin Films upon Swelling in Nonselective Solvents. Macromolecules 2013. [DOI: 10.1021/ma400810u] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Andrey A. Rudov
- Physics Department, Lomonosov Moscow State University, Moscow 119991, Russian
Federation
- Institute of
Interactive Materials
Research, DWI an der RWTH, Aachen 52056,
Germany
| | - Elena S. Patyukova
- Physics Department, Lomonosov Moscow State University, Moscow 119991, Russian
Federation
| | - Irina V. Neratova
- Institute for Advanced
Energy
Related Nanomaterials, University of Ulm, D-89069 Ulm, Germany
- Leibniz-Institut für Polymerforschung Dresden e.V., 01069 Dresden,
Germany
| | - Pavel G. Khalatur
- Institute for Advanced
Energy
Related Nanomaterials, University of Ulm, D-89069 Ulm, Germany
| | - Dorthe Posselt
- IMFUFA, Department
of Science,
Systems and Models, Roskilde University, P.O. Box 260, 4000 Roskilde, Denmark
| | - Christine M. Papadakis
- Technische Universität München, Physik-Department, Physik
weicher Materie, 85748 Garching, Germany
| | - Igor I. Potemkin
- Physics Department, Lomonosov Moscow State University, Moscow 119991, Russian
Federation
- Institute of
Interactive Materials
Research, DWI an der RWTH, Aachen 52056,
Germany
- Institute for Advanced
Energy
Related Nanomaterials, University of Ulm, D-89069 Ulm, Germany
| |
Collapse
|