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Large Multipurpose Exceptionally Conductive Polymer Sponges Obtained by Efficient Wet‐Chemical Metallization

Title data

Langner, Markus ; Agarwal, Seema ; Baudler, André ; Schröder, Uwe ; Greiner, Andreas:
Large Multipurpose Exceptionally Conductive Polymer Sponges Obtained by Efficient Wet‐Chemical Metallization.
In: Advanced Functional Materials. Vol. 25 (2015) Issue 39 . - pp. 6182-6188.
ISSN 1616-3028
DOI: https://doi.org/10.1002/adfm.201502636

Abstract in another language

Exceptionally conductive (250 S cm⁻¹), very fast electrically heatable, thermally insulating, antimicrobial 3D polymeric sponges with very low density (≈30 mg cm⁻³), superhydrophobicity, and high porosity, their method of preparation, and manifold examples for applications are presented here. The electrical heatability is reversible, reaching 90°C with 4.4 W in about 19–20 s and cooling immediately on switching off the voltage. The sponges show high contact angles >150° against water on the sponge surface as well as inside the sponge. Water droplets injected into the sponges are ejected. A facile wet‐chemical method established for macroscopic melamine–formaldehyde sponges is the key for the thorough in‐depth surface metallization of the sponges. The coating thickness and uniformity depend on the metallization formulation, conditions of metallization, and the type of metal used. A scanning electron microscope is used for morphology characterization. A reduced metallization rate in air is highly critical for the in‐depth uniform coating of metals. The resulting metallized sponges could be highly interesting for heating as well as insulation devices in addition to oil/water separation membranes.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry II > Chair Macromolecular Chemistry II - Univ.-Prof. Dr. Andreas Greiner
Faculties
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
Date Deposited: 14 Aug 2018 11:56
Last Modified: 14 Aug 2018 11:56
URI: https://eref.uni-bayreuth.de/id/eprint/45444