Abstract

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.

Keywords

MontmorillonitePolyimideSilicatePolymer chemistryChemical engineeringMaterials sciencePolyamideDimethylacetamideChemistryLayer (electronics)Organic chemistryComposite material

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Publication Info

Year
1993
Type
article
Volume
31
Issue
10
Pages
2493-2498
Citations
1380
Access
Closed

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Cite This

Kazuhisa Yano, Arimitsu Usuki, Akane Okada et al. (1993). Synthesis and properties of polyimide–clay hybrid. Journal of Polymer Science Part A Polymer Chemistry , 31 (10) , 2493-2498. https://doi.org/10.1002/pola.1993.080311009

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DOI
10.1002/pola.1993.080311009