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Materials 2019, 12(5), 797; https://doi.org/10.3390/ma12050797

Nanocellular Polymers: The Challenge of Creating Cells in the Nanoscale

CellMat Laboratory, University of Valladolid, Paseo de Belen 7, 47011 Valladolid, Spain
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Received: 5 February 2019 / Revised: 25 February 2019 / Accepted: 4 March 2019 / Published: 7 March 2019
(This article belongs to the Special Issue New Trends in Polymeric Foams)
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Abstract

The evolution of technology means that increasingly better materials are needed. It is well known that as a result of their interesting properties, nanocellular polymers perform better than microcellular ones. For this reason, the investigation on nanocellular materials is nowadays a very topical issue. In this paper, the different approaches for the production of these materials in our laboratory are explained, and results obtained by using polymethylmethacrylate (PMMA) are shown. Homogeneous nucleation has been studied by using raw PMMA, while two different systems were used for heterogeneous nucleation; adding nanoparticles to the system and using nanostructured polymers as solid precursors for foaming. The effects of the different parameters of the production process (gas dissolution foaming process) have been evaluated for all systems being possible to establish a comparison between the materials produced by different approaches. Moreover, the limitations and future work to optimise the materials produced are also discussed. View Full-Text
Keywords: polymethylmethacrylate; sepiolites; poly(methyl methacrylate)-poly(butyl acrylate)-poly(methyl methacrylate); nanocellular polymer; homogeneous nucleation; heterogeneous nucleation; gas dissolution foaming polymethylmethacrylate; sepiolites; poly(methyl methacrylate)-poly(butyl acrylate)-poly(methyl methacrylate); nanocellular polymer; homogeneous nucleation; heterogeneous nucleation; gas dissolution foaming
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Martín-de León, J.; Bernardo, V.; Rodríguez-Pérez, M.Á. Nanocellular Polymers: The Challenge of Creating Cells in the Nanoscale. Materials 2019, 12, 797.

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