Macroporous polymer foams by hydrocarbon templating
AUTOR(ES)
Shastri, Venkatram Prasad
FONTE
The National Academy of Sciences
RESUMO
Porous polymeric media (polymer foams) are utilized in a wide range of applications, such as thermal and mechanical insulators, solid supports for catalysis, and medical devices. A process for the production of polymer foams has been developed. This process, which is applicable to a wide range of polymers, uses a hydrocarbon particulate phase as a template for the precipitation of the polymer phase and subsequent pore formation. The use of a hydrocarbon template allows for enhanced control over pore structure, porosity, and other structural and bulk characteristics of the polymer foam. Polymer foams with densities as low as 120 mg/cc, porosity as high as 87%, and high surface areas (20 m2/g) have been produced. Foams of poly(l-lactic acid), a biodegradable polymer, produced by this process have been used to engineer a variety of different structures, including tissues with complex geometries such as in the likeness of a human nose.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=15738Documentos Relacionados
- Manufacturing and characterization of sustainable macroporous glass foams
- Supramolecular templating in thermodynamically controlled synthesis
- Ceramic foams porous microstructure characterization by X-ray microtomography
- Carbohydrate Utilization by Hydrocarbon Bacteria
- Macroporous MnO2 electrodes obtained by template assisted electrodeposition for electrochemical capacitors