Journal ArticleDOI
Synthesis and properties of polyimide–clay hybrid
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TLDR
A polyimide hybrid with montmorillonite clay mineral has been synthesized from a dimethylacetamide (DMAC) solution of poly(amic acid) and a DMAC dispersion of montmoroniite intercalated with an ammonium salt of dodecylamine as mentioned in this paper.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 A in length, 10 A 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.read more
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Synthesis and characterization of poly(styrene-maleic anhydride)-montmorillonite nanocomposite
Nehal Salahuddin,Ahmed Akelah +1 more
TL;DR: In this article, a poly(styrene-maleic anhydride)-montmorillonite nanocomposites were prepared by intercalation of layered polymer ions with the polymer ions.
Journal ArticleDOI
The influence of platelet disorientation on the barrier properties of composites: a numerical study
TL;DR: In this paper, the relationship between the platelet orientational distribution and the overall effective barrier properties (gas permeability) of mineral filled composites was investigated, and numerical estimates quantifying the difference between the barrier properties of composites with fully aligned and randomly oriented platelets were presented.
Journal ArticleDOI
Preparation, characterization, and properties of poly(vinyl chloride)/organophilic-montmorillonite nanocomposites
TL;DR: In this article, the effect of OMMT content on the nanostructures and properties of nanocomposites was studied by wide angle X-ray diffraction and transmission electron microscopy (TEM).
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