In-situ real time monitoring of the polymerization in gel-cast ceramic processes
- Argonne National Lab., IL (United States); and others
The method of gelcasting requires making a mixture of a slurry of ceramic powder in a solution of organic monomers and casting it in a mold. Gelcasting is different from injection molding in that it separates mold filling from setting during conversion of the ceramic slurry to a formed green part. In this work, nuclear magnetic resonance (NMR) spectroscopy and imaging has been used for in-situ monitoring of the gelation process and gelcasting of alumina. H NMR spectra and images are obtained during polymerization of a mixture of soluble reactive acrylamide monomers. Polymerization was initiated by adding an initiator and an accelerator to form long-chain, cross-linked polymers. Multidimensional NMR imaging was utilized for in-situ monitoring of the process and for verification of homogeneous polymerization. Comparison of the modeled intensities with acquired images shows a direct extraction of T{sub 1} data from the images.
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 567526
- Report Number(s):
- CONF-960106-; TRN: 98:000275-0014
- Resource Relation:
- Conference: 20. annual conference on composites, advanced ceramics, materials and structures-B, Cocoa Beach, FL (United States), 7-11 Jan 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the 20th annual conference on composites, advanced ceramics, materials, and structures - A; Greenhut, V.; PB: 498 p.
- Country of Publication:
- United States
- Language:
- English
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