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Self- and Forced Assembly of Polymer Systems: Experiment, Theory and Simulation

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Macromolecules".

Deadline for manuscript submissions: closed (10 May 2024) | Viewed by 1409

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Institute of Macromolecular Compounds of the Russian Academy of Sciences, 199004 St. Petersburg, Russia
Interests: polymers; polymer brushes; dendrimers; self-organization in polymers; computer simulations
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Dear Colleagues,

The assembly of polymers is the phenomena of the organization of polymer chains into two- or three-dimensional structures. Usually, one separates self-assembly/self-ordering and forced assembly. In the first case, such structures arise spontaneously due to the change in the external conditions (temperature, ionic strength, pH) through the molecular "recognition" due to non-covalent interactions (electrostatic, hydrophobic) or the formation of hydrogen bonds. As part of the self-assembly, one can also consider the formation of aggregates in block copolymers or the formation of liquid crystals due to the increase in the polymer concentration in the solution. Self-assembly is also observed in living tissues, where it manifests itself in the formation of structures such as double layers and vesicular (bubbly) structures consisting of one or many lipid bimolecular membranes. Self-assembly is used in the construction of functional ("smart") materials, the structure and properties of which depend on changes in external conditions. The forced assembly occurs under the influence of external factors. An example of this is crystallization under the influence of mechanical impacts. Despite the huge number of works devoted to this subject, both experimental and theoretical, this area still attracts much attention from researchers due to the wide variety of existing and newly discovered structures. The scope and potential of possible applications of this phenomenon in technology and medicine are growing more and more.

Prof. Dr. Anatoly Darinskii
Guest Editor

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Keywords

  • amphiphilic polymers
  • molecular "recognition"
  • micelles
  • globules
  • liposomes
  • polymer complexes aggregaton
  • micropase segregation
  • block copolymers
  • liquid crystals

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Published Papers (1 paper)

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Research

24 pages, 5706 KiB  
Article
Biosourced Multiphase Systems Based on Poly(Lactic Acid) and Polyamide 11 from Blends to Multi-Micro/Nanolayer Polymers Fabricated with Forced-Assembly Multilayer Coextrusion
by Nour Jaouadi, Mohamed Jaziri, Abderrahim Maazouz and Khalid Lamnawar
Int. J. Mol. Sci. 2023, 24(23), 16737; https://doi.org/10.3390/ijms242316737 - 24 Nov 2023
Cited by 1 | Viewed by 1043
Abstract
The objective of the present study was to investigate multiphase systems based on polylactic acid (PLA) and polyamide 11 (PA11) from blends to multilayers. Firstly, PLA/PA11 blends compatibilized with a multifunctionalized epoxide, Joncryl, were obtained through reactive extrusion, and the thermal, morphological, rheological, [...] Read more.
The objective of the present study was to investigate multiphase systems based on polylactic acid (PLA) and polyamide 11 (PA11) from blends to multilayers. Firstly, PLA/PA11 blends compatibilized with a multifunctionalized epoxide, Joncryl, were obtained through reactive extrusion, and the thermal, morphological, rheological, and mechanical behaviors of these materials were investigated. The role of Joncryl as a compatibilizer for the PLA/PA11 system was demonstrated by the significant decrease in particle size and interfacial tension as well as by the tensile properties exhibiting a ductile behavior. Based on these findings, we were able to further clarify the effects of interdiffusion and diffuse interphase formation on the structure, rheology, and mechanics of compatible multilayered systems fabricated with forced-assembly multilayer coextrusion. The results presented herein aim to provide a deeper understanding of the interfacial properties, including the rheological, mechanical, and morphological behaviors, towards the control of the interface and confinement in multilayer polymers resulting from coextrusion, and also to permit their use in advanced applications. Full article
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