Intercalates and exfoliates formed with non-EVOH monomers, oligomers and polymers; and EVOH composite materials containing same

Nanocomposites are manufactured by combining an EVOH matrix polymer and exfoliated intercalates formed by contacting a phyllosilicate with a non-EVOH intercalant to adsorb or intercalate the intercalant between adjacent phyllosilicate platelets. Sufficient intercalant is adsorbed between adjacent ph...

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Bibliographische Detailangaben
Hauptverfasser: ENGMAN, STEVEN J, SERRANO, FERNANDO, BEALL, GARY W
Format: Patent
Sprache:eng
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Zusammenfassung:Nanocomposites are manufactured by combining an EVOH matrix polymer and exfoliated intercalates formed by contacting a phyllosilicate with a non-EVOH intercalant to adsorb or intercalate the intercalant between adjacent phyllosilicate platelets. Sufficient intercalant is adsorbed between adjacent phyllosilicate platelets to expand the adjacent platelets to a spacing of at least about 5 ANGSTROM , preferably at least about 10 ANGSTROM (as measured after water removal), up to about 100 ANGSTROM and preferably in the range of about 30-40 ANGSTROM , so that the intercalate easily can be exfoliated, e.g., when mixed with the EVOH matrix polymer melt, to provide an EVOH matrix polymer/platelet composite (nanocomposite) material that does not degrade the EVOH matrix polymer.