Special Issue "Ionic Interfaces in Smart Polymer Materials"

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".

Deadline for manuscript submissions: 31 January 2022.

Special Issue Editors

Prof. Dr. Sébastien Livi
E-Mail Website
Guest Editor
Laboratoire Ingénierie des Matériaux Polymères, INSA Lyon, 69100 Villeurbanne, France
Interests: synthesis of ionic liquids; nanomaterials from ionic liquids, polymer-ionic liquids, epoxy thermosets, polymer blends, biopolymers, functionalization of nanoparticles (solvent way, supercritical carbon dioxide), polymer foaming (ScCO2), composites, and polymer nanocomposites
Special Issues, Collections and Topics in MDPI journals
Dr. Ricardo Keitel Donato
E-Mail Website
Guest Editor
Centre for Advanced 2D Materials (CA2DM) - National University of Singapore, 6 Science Drive 2, Singapore 117546, Singapore
Interests: 2D materials-based polymer composites and blends; ionic interphases in polymer blends and composites; self-assembling nanomaterials; biopolymer-based composites and blends
Dr. Hynek Beneš
E-Mail Website
Guest Editor
Institute of Macromolecular Chemistry of the Academy of Sciences of the Czech Republic, Prague, Czech Republic
Interests: microwave-assisted synthesis of polymers and nanocomposites; ionic liquids; epoxy nanomaterials; bio-based and biodegradable polymers; polyurethane synthesis and degradation

Special Issue Information

Dear Colleagues,

Materials sciences have a major role in meeting the current global challenges such as environmental stewardship; the production, storage, and conversion of energy; and cost-effective transportation, leading the research to design advanced polymer materials that consider both their shelf- and end-of-life. Through the concept “function through structural design”, the development of easy and new production methods is crucial for preparing innovative polymer material solutions and thus ensures a sustainable future. Consequently, in recent years, the polymer materials community has put a great deal of effort into designing innovative polymer materials that are engineered to be multifunctional or task-specific, presenting enhancement in properties such as ionic conductivity, chemical and thermal stability, mechanical performance, fire retardancy, barrier properties, self-healing ability, and shape memory behavior. This can be effectively achieved by altering the interphase behavior of these polymer systems, both via chemical modification or incorporating additives/fillers such as block copolymers, ionomers, organic–inorganic hybrid materials, or inorganic-rich nano-objects. Among these, the application of (poly)ionic liquids, eutectic solvents, and eutectic molecular liquids have presented many new opportunities within the last decade, since small amounts of these compounds can impart dramatic interphase modifications to polymer materials due the production of vast physical interphase bonding, including the formation of ionic bonding. Especially considering their unique set of physico-chemical properties as well as their multitude of chemical structures, they represent a promising new path to designing and creating new multifunctional and task-specific polymeric materials.

Prof. Dr. Sébastien Livi
Dr. Ricardo Keitel Donato
Dr. Hynek Beneš
Guest Editors

Manuscript Submission Information

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Keywords

  • interphase
  • interfacial agents
  • shape memory behavior
  • functional properties
  • (poly)ionic liquids
  • polymer blends
  • nanocomposites

Published Papers (3 papers)

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Research

Article
Epoxy/Ionic Liquid-Modified Mica Nanocomposites: Network Formation–Network Degradation Correlation
Nanomaterials 2021, 11(8), 1990; https://doi.org/10.3390/nano11081990 - 03 Aug 2021
Cited by 2 | Viewed by 788
Abstract
We synthesized pristine mica (Mica) and N-octadecyl-N’-octadecyl imidazolium iodide (IM) modified mica (Mica-IM), characterized it, and applied it at 0.1–5.0 wt.% loading to prepare epoxy nanocomposites. Dynamic differential scanning calorimetry (DSC) was carried out for the analysis of the cure potential and kinetics [...] Read more.
We synthesized pristine mica (Mica) and N-octadecyl-N’-octadecyl imidazolium iodide (IM) modified mica (Mica-IM), characterized it, and applied it at 0.1–5.0 wt.% loading to prepare epoxy nanocomposites. Dynamic differential scanning calorimetry (DSC) was carried out for the analysis of the cure potential and kinetics of epoxy/Mica and epoxy/Mica-IM curing reaction with amine curing agents at low loading of 0.1 wt.% to avoid particle aggregation. The dimensionless Cure Index (CI) was used for qualitative analysis of epoxy crosslinking in the presence of Mica and Mica-IM, while qualitative cure behavior and kinetics were studied by using isoconversional methods. The results indicated that both Mica and Mica-IM improved the curability of epoxy system from a Poor to Good state when varying the heating rate in the interval of 5–15 °C min−1. The isoconversional methods suggested a lower activation energy for epoxy nanocomposites with respect to the blank epoxy; thus, Mica and Mica-IM improved crosslinking of epoxy. The higher order of autocatalytic reaction for epoxy/Mica-IM was indicative of the role of liquid crystals in the epoxide ring opening. The glass transition temperature for nanocomposites containing Mica and Mica-IM was also lower than the neat epoxy. This means that nanoparticles participated the reaction because of being reactive, which decelerated segmental motion of the epoxy chains. The kinetics of the thermal decomposition were evaluated for the neat and mica incorporated epoxy nanocomposites epoxy with varying Mica and Mica-IM amounts in the system (0.5, 2.0 and 5.0 wt.%) and heating rates. The epoxy/Mica-IM at 2.0 wt.% of nanoparticle showed the highest thermal stability, featured by the maximum value of activation energy devoted to the assigned system. The kinetics of the network formation and network degradation were correlated to demonstrate how molecular-level transformations can be viewed semi-experimentally. Full article
(This article belongs to the Special Issue Ionic Interfaces in Smart Polymer Materials)
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Article
Investigation of the Ionic Liquid Graphene Electric Double Layer in Supercapacitors Using Constant Potential Simulations
Nanomaterials 2020, 10(11), 2181; https://doi.org/10.3390/nano10112181 - 01 Nov 2020
Cited by 5 | Viewed by 1267
Abstract
In this work, we investigate the effect of the cation structure on the structure and dynamics of the electrode–electrolyte interface using molecular dynamics simulations. A constant potential method is used to capture the behaviour of 1-ethyl-3-methylimidazolium bis (trifluoromethane)sulfonimide ([C2mim][NTf2]) [...] Read more.
In this work, we investigate the effect of the cation structure on the structure and dynamics of the electrode–electrolyte interface using molecular dynamics simulations. A constant potential method is used to capture the behaviour of 1-ethyl-3-methylimidazolium bis (trifluoromethane)sulfonimide ([C2mim][NTf2]) and butyltrimethylammonium bis(trifluoromethane) sulfonimide ([N4,1,1,1][NTf2]) ionic liquids at varying potential differences applied across the supercapacitor. We find that the details of the structure in the electric double layer and the dynamics differ significantly, yet the charge profile and capacitance do not vary greatly. For the systems considered, charging results in the rearrangement and reorientation of ions within ∼1 nm of the electrode rather than the diffusion of ions to/from the bulk region. This occurs on timescales of O(10 ns) for the ionic liquids considered, and depends on the viscosity of the fluid. Full article
(This article belongs to the Special Issue Ionic Interfaces in Smart Polymer Materials)
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Article
Effects of Immobilized Ionic Liquid on Properties of Biodegradable Polycaprolactone/LDH Nanocomposites Prepared by In Situ Polymerization and Melt-Blending Techniques
Nanomaterials 2020, 10(5), 969; https://doi.org/10.3390/nano10050969 - 18 May 2020
Cited by 5 | Viewed by 1117
Abstract
The high capacity of calcinated layered double hydroxides (LDH) to immobilize various active molecules together with their inherent gas/vapor impermeability make these nanoparticles highly promising to be applied as nanofillers for biodegradable polyester packaging. Herein, trihexyl(tetradecyl)phosphonium decanoate ionic liquid (IL) was immobilized on [...] Read more.
The high capacity of calcinated layered double hydroxides (LDH) to immobilize various active molecules together with their inherent gas/vapor impermeability make these nanoparticles highly promising to be applied as nanofillers for biodegradable polyester packaging. Herein, trihexyl(tetradecyl)phosphonium decanoate ionic liquid (IL) was immobilized on the surface of calcinated LDH. Thus, the synthesized nanoparticles were used for the preparation of polycaprolactone (PCL)/LDH nanocomposites. Two different methods of nanocomposite preparation were used and compared: microwave-assisted in situ ring opening polymerization (ROP) of ε-caprolactone (εCL) and melt-blending. The in situ ROP of εCL in the presence of LDH nanoparticles with the immobilized IL led to homogenous nanofiller dispersion in the PCL matrix promoting formation of large PCL crystallites, which resulted in the improved mechanical, thermal and gas/water vapor barrier properties of the final nanocomposite. The surface-bonded IL thus acted as nanofiller surfactant, compatibilizer, as well as thermal stabilizer of the PCL/LDH nanocomposites. Contrary to that, the melt-blending caused a partial degradation of the immobilized IL and led to the production of PCL nanocomposites with a heterogenous nanofiller dispersion having inferior mechanical and gas/water vapor barrier properties. Full article
(This article belongs to the Special Issue Ionic Interfaces in Smart Polymer Materials)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: New Redox Active Ionic Polymers and Its Applications in Energy
Authors: Prof. David Mecerreyes
Affiliation: Universidad del Pais Vasco, Leioa, Spain

Title: Investigation of Electric Double Layer formed between Ionic Liquid and Graphene in Supercapacitors using a Constant Potential Method
Authors: Dr Baris Demir; Prof Debra J Searles (Bernhardt)
Affiliation: (a) Centre for Theoretical and Computational Molecular Science, The Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Queensland 4072, Australia
(b) School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia

Title: Assisted Nanophotonic Impedance to Probe Ionic Effect on Nanofibers for Tribolectric Nanogenerators
Authors: Beynor Antonio Paez Sierra 1, Dina Maritza Maralanda Cardona 2, Fredy Giovanni Mesa Rodríguez 3
Affiliation: 1. Physics Department, Universidad Militar Nueva Granada, Campus Nueva Granada, Cajic´a 250247, Colombia; 2.  Faculty of Engineering, Universidad Militar Nueva Granada, Bogotá D.C., Colombia; 3. Faculty of Natural Sciences, Department of Biology, Universidad del Rosario, Bogot´a, Colombia  

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