A special instrument for exact control of self-organized structures preparation in polymer layers

作者：Minarik Antonin^*; Perutka Martin; Urban Pavel; Lapcik Lubomir; Juricka Martin

来源：International Journal of Heat and Mass Transfer, 2010, 53(23-24): 5472-5477.

DOI：10.1016/j.ijheatmasstransfer.2010.07.010

• Self-organization
• Convection
• Evaporation
• Process parameters
• Polymer solution

Special micro-condensation drying system (MCDS) was constructed for precise preparation of self-organized polymeric layers by casting from solutions and dispersions at highly non-equilibrium conditions. There were respected the needs for exact regulation of temperature, temperature gradient and rate of solvent evaporation, vibration damping, dust-free design and wide variability in process parameters settings as well. MCDS allows to study a broad spectrum of effects determining creation of self-organized structures during the evaporation of solvent from the polymer solution (e.g. Rayleigh-Benard or Benard-Marangoni cells). As a model system for MCDS functionality testing aqueous solution of hydroxyethyl-cellulose was chosen, with respect to its excellent film-forming properties and the self-organization ability. All of this is observable in high number of cell patterns, originating according to the process parameters, in the given polymer-solution system.

• 出版日期2010-11