Conference proceeding
Nanoporous thermosets via reactive encapsulation of a chemically inert solvent versus free radically polymerized and phase separating systems
Continuous Nanophase and Nanostructured Materials as held at the 2003 MRS Fall Meeting; Boston, MA; USA; 1-5 Dec. 2003, pp.347-352
01 Dec 2003
Abstract
Nanoporous thermosets are used as polyelectrolytes in fuel cells, separation membranes, and sensors and actuators, etc. Design of nanoporous thermosets for such applications entails controlling permeability by tailoring the pore size and pore chemistry. Usually free radically polymerizing and simultaneously phase separating systems are used to synthesize porous thermosets. A novel method of synthesizing nanoporous polymeric materials is employed in this work. This technique involves the synthesis of nanoporous thermosets by reactive encapsulation of an inert solvent using step-growth crosslinking polymerization reaction carried out until completion without phase separation into macroscopic phases. Key structural features of the porous materials synthesized by the reactive encapsulation technique were investigated by Scanning Electron Microscopy (SEM) after extraction and supercritical drying using carbon dioxide. Micrographs of the materials synthesized using the reactive encapsulation technique showed that the porous materials of pore size less than 100 nm are obtained. Micrographs also showed that the reactive encapsulation technique can be employed to synthesize nanoporous polymeric materials of desired porosity and pore size by changing the solvent content. In addition, porous thermosets were also synthesized using free radical chemistry and phase separating system. The differences in the porous morphology of both these systems were enunciated using SEM micrographs.
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Details
- Title
- Nanoporous thermosets via reactive encapsulation of a chemically inert solvent versus free radically polymerized and phase separating systems
- Creators
- V RamanG Palmese
- Publication Details
- Continuous Nanophase and Nanostructured Materials as held at the 2003 MRS Fall Meeting; Boston, MA; USA; 1-5 Dec. 2003, pp.347-352
- Conference
- Continuous Nanophase and Nanostructured Materials as held at the 2003 MRS Fall Meeting (Boston, Massachusetts, United States, 01 Dec 2003 - 05 Dec 2003)
- Number of pages
- 1
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Identifiers
- 991019170494304721