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VINCENZO LA CARRUBBA

Preparation of polymeric foams with a pore size gradient via Thermally Induced Phase Separation (TIPS)

  • Authors: Mannella, G.; Conoscenti, G.; CARFI' PAVIA, F.; LA CARRUBBA, V.; Brucato, V.
  • Publication year: 2015
  • Type: Articolo in rivista (Articolo in rivista)
  • OA Link: http://hdl.handle.net/10447/149140

Abstract

Abstract Foams with a pore size gradient are promising materials for tissue engineering applications where a complex architecture involving morphological variations in space must be mimicked, e.g. in bone tissue repair. In this paper, a technique to obtain a porous scaffold with a pore size gradient is presented. The preparation procedure is based on Thermally Induced Phase Separation (TIPS), by imposing a different thermal history on the two sides of a polymeric solution. In this way, a gradient in thermal history is produced, which will generate a pore size monotonously varying along scaffold thickness. By controlling some parameters easy to manipulate, such as demixing temperature and/or residence time in the miscibility gap region, the pore size range can be easily tuned.