Reversible spherical organic water microtraps

Anastasis Karatzas, Panayiotis Bilalis, Ioannis A. Kartsonakis, George C. Kordas*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

Spherical water microtraps were prepared via a two steps process, which comprises the preparation of cross-linked poly(methacrylic acid) spheres by distillation-precipitation polymerization and the subsequent conversion of carboxylic groups to the corresponding sodium salts by treatment with aqueous sodium hydroxide solution. The influence of the cross-linker amount was investigated in order to achieve greater water absorption and a reversibility of the initial spheres after drying the formed hydrogel or washing with an excess of organic solvent. We achieved the highest water absorbency of about 70 times their weight occurring rapidly and unlimited times reversible after going through repeatable cycles of absorption and drying. This new material, called microtraps, was developed for its incorporation into multilayer anticorrosive coatings to prevent contact of water with metallic substrates.

Original languageEnglish (US)
Pages (from-to)443-445
Number of pages3
JournalJournal of Non-Crystalline Solids
Volume358
Issue number2
DOIs
StatePublished - Jan 15 2012
Externally publishedYes

Keywords

  • Corrosion
  • Cross-linking
  • Distillation precipitation polymerization
  • Polymers
  • Swelling

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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