Advanced Nano Cellular Foams

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

Deadline for manuscript submissions: closed (30 September 2021) | Viewed by 4218

Special Issue Editors


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Guest Editor
Researcher CellMat Laboratory, University of Valladolid, Valladolid, Spain
Interests: nanocellular polymers; functionalized polymers; environmental remediation; polymer nanocomposites; smart materials
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Researcher CellMat Laboratory, University of Valladolid, Valladolid, Spain
Interests: porous polymers; advanced materials; environmental remediation; sensoring

Special Issue Information

Dear Colleagues,

Nanocellular polymer foams have emerged in the last decade as an exciting research field that has not stopped growing. In about ten years, the smallest achievable cell size of these materials has been decreased by two orders of magnitude, from about 1 micron to 10 nm. This achievement has required a deep understanding of cell nucleation and growing mechanisms, overcoming technical limitations, and developing enhanced approaches not only to produce polymer foams but to characterize their morphology and physical properties. However, there is still plenty of room to pursue the optimization and further development and understanding of these materials, which could lead to the production of advanced high-performance materials for a wide range of applications.

Particularly, the enhanced physical properties of nanocellular foams, or even unexpected emerging properties related to the nanometric dimensions of their porous structure, offer unique opportunities for diverse applications such as thermal insulation, catalysis, gas separation or storage, environmental remediation, sensoring, drug delivery, etc.

This Special Issue aims to highlight the most recent advances in the development of nanocellular polymer foams, as well as other advanced nanoporous systems with common features, the study of their morphology and physical properties, the improvement of the understanding of their production routes, and their potential applications.

We kindly invite you to submit a high-quality contribution to this Special Issue of Nanomaterials, entitled “Advanced Nanocellular Foams.” Reviews and original research articles are all welcome.

Dr. Javier Pinto
Dr. Suset Barroso-Solares
Guest Editors

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Keywords

  • Nanocellular Polymers
  • Polymer foam
  • Functional porous materials
  • Transparent foams
  • Advanced thermal insulation

Published Papers (2 papers)

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Editorial

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7 pages, 240 KiB  
Editorial
Advanced Nanocellular Foams: Perspectives on the Current Knowledge and Challenges
by Daniel Cuadra-Rodriguez, Suset Barroso-Solares and Javier Pinto
Nanomaterials 2021, 11(3), 621; https://doi.org/10.3390/nano11030621 - 02 Mar 2021
Cited by 10 | Viewed by 2060
Abstract
Nanocellular polymers (i.e., cellular polymers with cells and walls in the nanometric range) were first produced in the early 2000s, with the works of [...] Full article
(This article belongs to the Special Issue Advanced Nano Cellular Foams)

Research

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21 pages, 51310 KiB  
Article
Nanostructure of PMMA/MAM Blends Prepared by Out-of-Equilibrium (Extrusion) and Near-Equilibrium (Casting) Self-Assembly and Their Nanocellular or Microcellular Structure Obtained from CO2 Foaming
by Suset Barroso-Solares, Victoria Bernardo, Daniel Cuadra-Rodriguez and Javier Pinto
Nanomaterials 2021, 11(11), 2834; https://doi.org/10.3390/nano11112834 - 25 Oct 2021
Cited by 2 | Viewed by 1294
Abstract
Blends of poly(methyl methacrylate) (PMMA) and a triblock copolymer poly(methyl methacrylate)-b-poly(butyl acrylate)-b-poly(methyl methacrylate) (MAM) have been obtained following both out-of-equilibrium (extrusion) and near-equilibrium (solvent casting) production routes. The self-assembly capability and the achievable nanostructures of these blends are analyzed by transmission electron microscopy [...] Read more.
Blends of poly(methyl methacrylate) (PMMA) and a triblock copolymer poly(methyl methacrylate)-b-poly(butyl acrylate)-b-poly(methyl methacrylate) (MAM) have been obtained following both out-of-equilibrium (extrusion) and near-equilibrium (solvent casting) production routes. The self-assembly capability and the achievable nanostructures of these blends are analyzed by transmission electron microscopy (TEM) regarding their production route and potential for the achievement of nanocellular foams by CO2 gas dissolution foaming. The influence of the initial nanostructure of the solids on the obtained cellular structure of bulk and film samples is determined by high-resolution scanning electron microscopy (HRSEM) for diverse foaming conditions (saturation pressure, saturation temperature, and post-foaming stage), taking into account the required use of a foaming mold to achieve foams from films. Moreover, the influence of the nanostructuration on the presence of solid outer layers, typical of the selected foaming process, is addressed. Finally, consideration of a qualitative model and the obtained results in terms of nanostructuration, cellular structure, and foaming behavior, allow proposing a detailed cell nucleation, growth, and stabilization scheme for these materials, providing the first direct evidence of the cell nucleation happening inside the poly(butyl acrylate) phase in the PMMA/MAM blends. Full article
(This article belongs to the Special Issue Advanced Nano Cellular Foams)
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