Your browser doesn't support javascript.
loading
Durable, Ultrathin, and Antifouling Polymer Brush Coating for Efficient Condensation Heat Transfer.
Li, Shuai; Lam, Cheuk Wing Edmond; Donati, Matteo; Regulagadda, Kartik; Yavuz, Emre; Pfeiffer, Till; Sarkiris, Panagiotis; Gogolides, Evangelos; Milionis, Athanasios; Poulikakos, Dimos; Butt, Hans-Jürgen; Kappl, Michael.
Afiliación
  • Li S; Max Planck Institute for Polymer Research, 55128 Mainz, Germany.
  • Lam CWE; Department of Mechanical and Process Engineering, Laboratory of Thermodynamics in Emerging Technologies, ETH Zurich, 8092 Zurich, Switzerland.
  • Donati M; Department of Mechanical and Process Engineering, Laboratory of Thermodynamics in Emerging Technologies, ETH Zurich, 8092 Zurich, Switzerland.
  • Regulagadda K; Department of Mechanical and Process Engineering, Laboratory of Thermodynamics in Emerging Technologies, ETH Zurich, 8092 Zurich, Switzerland.
  • Yavuz E; Max Planck Institute for Polymer Research, 55128 Mainz, Germany.
  • Pfeiffer T; Institute for Technical Thermodynamics, Technical University of Darmstadt, 64287 Darmstadt, Germany.
  • Sarkiris P; Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", 15341Agia Paraskevi, Attiki, Greece.
  • Gogolides E; Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", 15341Agia Paraskevi, Attiki, Greece.
  • Milionis A; Department of Mechanical and Process Engineering, Laboratory of Thermodynamics in Emerging Technologies, ETH Zurich, 8092 Zurich, Switzerland.
  • Poulikakos D; Department of Mechanical and Process Engineering, Laboratory of Thermodynamics in Emerging Technologies, ETH Zurich, 8092 Zurich, Switzerland.
  • Butt HJ; Max Planck Institute for Polymer Research, 55128 Mainz, Germany.
  • Kappl M; Max Planck Institute for Polymer Research, 55128 Mainz, Germany.
ACS Appl Mater Interfaces ; 16(1): 1941-1949, 2024 Jan 10.
Article en En | MEDLINE | ID: mdl-38115194
ABSTRACT
Heat exchangers are made of metals because of their high heat conductivity and mechanical stability. Metal surfaces are inherently hydrophilic, leading to inefficient filmwise condensation. It is still a challenge to coat these metal surfaces with a durable, robust, and thin hydrophobic layer, which is required for efficient dropwise condensation. Here, we report the nonstructured and ultrathin (∼6 nm) polydimethylsiloxane (PDMS) brushes on copper that sustain high-performing dropwise condensation in high supersaturation. Due to the flexible hydrophobic siloxane polymer chains, the coating has low resistance to drop sliding and excellent chemical stability. The PDMS brushes can sustain dropwise condensation for up to ∼8 h during exposure to 111 °C saturated steam flowing at 3 m·s-1, with a 5-7 times higher heat transfer coefficient compared to filmwise condensation. The surface is self-cleaning and can reduce the level of bacterial attachment by 99%. This low-cost, facile, fluorine-free, and scalable method is suitable for a great variety of heat transfer applications.
Palabras clave
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Appl Mater Interfaces Asunto de la revista: BIOTECNOLOGIA / ENGENHARIA BIOMEDICA Año: 2024 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Estados Unidos