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Synthesis and properties of polyimide–clay hybrid
Abstract
A polyimide hybrid with montmorillonite clay mineral has been synthesized from a dimethylacetamide (DMAC) solution of poly(amic acid) and a DMAC dispersion of montmorillonite intercalated with an ammonium salt of dodecylamine. Montmorillonite consists of stacked silicate sheets about 2000 Å in length, 10 Å in thickness. In this hybrid, montmorillonite is dispersed homogeneously into the polyimide matrix and oriented parallel to the film surface. Thanks to this special structure, this hybrid showed excellent gas barrier properties. Only 2 wt % addition of montmorillonite brought permeability coefficients of various gases to values less than half of those of ordinary polyimide. Furthermore, this hybrid had low thermal expansion coefficient. © 1993 John Wiley & Sons, Inc.
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Cited by
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Metadata
- Authors
- Yano, K., Usuki, A., Okada, A., Kurauchi, T., & Kamigaito, O.
- Venue
- Journal of Polymer Science Part A: Polymer Chemistry
- Publisher
- Wiley
- Published
- 1993-09
- Volume
- 31
- Issue
- 10
- Pages
- 2493-2498
- ISSN
- 0887-624X (ISSN-L)
- 1099-0518
- OpenAlex
- W2032091856
- Cited by
- 1,389
- References
- 0
- FWCI
- 5.18
- Type
- journal article
- Language
- en
- Open access
- closed
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- Yano, K., Usuki, A., Okada, A., Kurauchi, T., & Kamigaito, O. (1993). Synthesis and properties of polyimide–clay hybrid. Journal of Polymer Science Part A: Polymer Chemistry. https://doi.org/10.1002/pola.1993.080311009
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