Applications of melting gels
- 316 Downloads
Hybrid organic-inorganic gels and glasses have been studied for many years for a variety of applications. Using the sol–gel process, it is possible to prepare silica-based hybrid gels that are rigid at room temperature, but soften and flow around 110 °C. This softening behavior has been called melting, even though it is not melting in a thermodynamic sense. Instead, the ability to flow is an indication that the material is not entirely cross-linked. In fact, some melting gels show glass transition behavior at temperatures below 0 °C. However, once these so-called melting gels have been heated at around 160 °C for 24 h, they no longer show the ability to soften. With an interest in using these materials for sealing microelectronics, their physical properties have been measured. In addition, their hydrophobicity, adhesion and electrochemical response have been evaluated in corrosive environments. It is also found that melting gels have been imprinted with good fidelity, and that gold nanoparticles maintain their plasmonic resonance when dispersed in melting gels. Finally, melting gels have been deposited by electrospraying to produce a variety of textures.
KeywordsOrganic-inorganic hybrid gels Di-substituted siloxanes Mono-substituted siloxanes Melting gels Imprint lithography Electrospraying
Financial support was received from NSF Award 1313544 Materials World Network-SusChEM and Ministerio de Economia y Competitividad, SPAIN (PCIN-2013-030).
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
- 12.Klein LC, Jitianu A (2014) Encapsulating battery components with melting gels. In: Ohji T, Matyas J, Manjooran NJ, Pickrell G, Jitianu A (eds) Advances in Materials Science for Environmental and Energy Technologies III. American Ceramic Society, Westerville, Ohio, p 279–286. Volume 250Google Scholar
- 22.Klein LC, Al-Marzoki K, Jitianu A (2017) Phase separation in melting gels. Phys Chem Glass: Eur J Glass Sci Technol B 58:142–149Google Scholar
- 25.Degnah A, Rodriguez G, Jitianu A, Mosa J, Aparicio M, Klein LC (2016) Electrochemical properties of melting gel coatings. In Ohji VT, Kanakala R, Matyas J, Manjooran NJ, Wong-Ng WK (eds) Advances in Materials Science for Environmental and Energy Technologies. American Ceramic Soc., Westerville, Ohio, Volume 260Google Scholar
- 26.Aparicio M, Jitianu A, Rodriguez G, Picard Q, Mosa J, Klein LC (2018) Organic–inorganic consolidated melting-gel coatings on AZ31 magnesium alloy with remarkable corrosion resistance in NaCl solutions, submitted to Corrosion ScienceGoogle Scholar
- 47.Chateau D, Liotta A, Lunden H, Lerouge F, Chaput F, Krein D, Cooper T, Lopes C, El-Amay AAG, Lindgren M, Parola S (2016) Long distance enhancement of nonlinear optical properties using low concentration of plasmonic nanostructures in dye doped monolithic sol–gel materials. Adv Funct Mater 26:6005–6014CrossRefGoogle Scholar
- 52.Merrill MH, Pogue WR, Baucom JN (2015) Electrospray ionization of polymers: evaporation, drop fission, and deposited particle morphology. J Micro- Nano-Manuf 3:11003–1-7Google Scholar
- 60.Tiberto P, Barrera G, Celegato F, Coisson M, Cholerio A, Martino P, Pandolfi P, Allia P (2013) Magnetic properties of jet-printer inks containing dispersed magnetite nanoparticles. Eur Phys J B 173:1–6Google Scholar