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Interconnected porous epoxy monoliths prepared by concentrated emulsion templating.
Jianli Wang1, Zhongjie Du, Hangquan Li
1The Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China.
Journal of Colloid and Interface Science
|July 15, 2009
Summary
Researchers created porous epoxy monoliths using concentrated emulsions. This method offers control over porous material morphology for advanced applications.
Area of Science:
- Materials Science
- Polymer Chemistry
Background:
- Porous epoxy materials are valuable in various applications.
- Controlling the morphology of porous polymers is crucial for performance.
Purpose of the Study:
- To develop a method for preparing porous epoxy monoliths.
- To investigate the influence of various parameters on the morphology of the resulting porous epoxy.
Main Methods:
- Step polymerization within a concentrated emulsion stabilized by non-ionic emulsifiers and colloidal silica.
- Utilizing a glycidyl amino epoxy monomer (GAE) solution in 4-methyl-2-pentanone as the continuous phase.
- Employing an aqueous colloidal silica suspension as the dispersed phase.
Main Results:
- Porous epoxy monoliths were successfully synthesized.
- An optimal Hydrophilic-Lipophilic Balance (HLB) value for the emulsifier was determined.
- Scanning Electron Microscopy (SEM) was used to analyze the porous epoxy morphology.
- The effects of colloidal silica, emulsifier, curing, and dispersed phase volume fraction on morphology were systematically studied.
Conclusions:
- The concentrated emulsion method provides a viable route to porous epoxy monoliths.
- Parameters like emulsifier HLB and colloidal silica content significantly influence pore structure.
- This work contributes to the understanding and fabrication of tailored porous epoxy materials.
