Convection in Polymeric Fluids Subjected to Vertical Temperature Gradients

• DOI: 10.1021/ma992156t
• Publication Date: 2002-07-26T06:04:50Z
• Authors: Minqin Li; Shengqing Xu; Eugenia Kumacheva
• Keywords: Silanol

We present a study of convection in thin layers poly(dimethyl siloxane) (PDMS) oligomers end-terminated with different functional groups. In PDMS, silanol-, and aminopropyl-terminated surface-tension-driven produces ordered hexagonal patterns critical wavenumber k ≈ 2. The onset is close to that predicted by linear theory. films methacryloxypropyl-terminated PDMS (MAOP-PDMS) suppressed, despite the fact macroscopic physical properties favor this type convection. thick MAOP-PDMS, mixed surface-tension- buoyancy-driven occurs, generating roll-like patterns. demonstrate nonequilibrium induced fluid MAOP-PDMS can be trapped solid state photopolymerization.