Monika Pilz, Christian W. Karl, Bartlomiej Przybyszewski, Rafal B. Kozera
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引用次数: 0
Abstract
Environmentally friendly functionalized inorganic–organic hybrid materials (polyhedral oligomeric silsesquioxanes—POSS) imparting anti-icing properties to a commercial waterborne polyurethane coating matrix have been successfully synthesized deploying a possible industrial manufacturing route by a two-step procedure. Thereby, 13C-nuclear magnetic resonance (NMR) spectroscopy was mainly used to ensure complete conversion of the given reactive polydimethylsiloxane-based modifier with selected amino-functionalized POSS intermediates at given stoichiometry. Two distinguished nanocomposite coatings based on the functionalized POSS additives were investigated for their suitability towards improved anti-icing properties. The characterization includes contact angle (CA) measurements and determination of freezing delay time (FDT) as well as scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM–EDS) to underline the results obtained. The findings clearly contribute to the complex interplay of material composition and coating interface emphasizing segregation of partly immiscible additives in the coating matrix being necessary for the enhanced water-repellence and anti-icing performance.
期刊介绍：
The objective of the Journal of Nanoparticle Research is to disseminate knowledge of the physical, chemical and biological phenomena and processes in structures that have at least one lengthscale ranging from molecular to approximately 100 nm (or submicron in some situations), and exhibit improved and novel properties that are a direct result of their small size.
Nanoparticle research is a key component of nanoscience, nanoengineering and nanotechnology.
The focus of the Journal is on the specific concepts, properties, phenomena, and processes related to particles, tubes, layers, macromolecules, clusters and other finite structures of the nanoscale size range. Synthesis, assembly, transport, reactivity, and stability of such structures are considered. Development of in-situ and ex-situ instrumentation for characterization of nanoparticles and their interfaces should be based on new principles for probing properties and phenomena not well understood at the nanometer scale. Modeling and simulation may include atom-based quantum mechanics; molecular dynamics; single-particle, multi-body and continuum based models; fractals; other methods suitable for modeling particle synthesis, assembling and interaction processes. Realization and application of systems, structures and devices with novel functions obtained via precursor nanoparticles is emphasized. Approaches may include gas-, liquid-, solid-, and vacuum-based processes, size reduction, chemical- and bio-self assembly. Contributions include utilization of nanoparticle systems for enhancing a phenomenon or process and particle assembling into hierarchical structures, as well as formulation and the administration of drugs. Synergistic approaches originating from different disciplines and technologies, and interaction between the research providers and users in this field, are encouraged.
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