Document Detail


Miscibility-structure-property correlation in blends of ethylene vinyl alcohol copolymer and polyamide 6/66.
MedLine Citation:
PMID:  15694426     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Blends of ethylene vinyl alcohol (EVOH; 44 mol% ethylene) and polyamide 6/66 (PA; 75 mol% PA 6) random copolymers were studied in the entire composition range. Specific interaction between the components was analyzed by IR spectroscopy; furthermore, coefficients related to the Flory-Huggins interaction parameter were derived from equilibrium water uptake and tensile strength. Morphology of the blends was investigated by thermal analysis (DSC), density measurements, and SEM micrographs. The two polymers form heterogeneous blends in each composition. Although the components crystallize in separate phases, the morphology and the mechanical properties are greatly affected by the association of OH and NH groups. Crystallization is restricted in the blends, and the increase of the amorphous fraction, as well as specific interaction between the components, results in essential improvement in the mechanical properties.
Authors:
Eniko Földes; Béla Pukánszky
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of colloid and interface science     Volume:  283     ISSN:  0021-9797     ISO Abbreviation:  J Colloid Interface Sci     Publication Date:  2005 Mar 
Date Detail:
Created Date:  2005-02-07     Completed Date:  2006-06-15     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0043125     Medline TA:  J Colloid Interface Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  79-86     Citation Subset:  -    
Affiliation:
Institute of Materials and Environmental Chemistry, Chemical Research Center, Hungarian Academy of Sciences, H-1525 Budapest, Hungary. efoldes@chemres.hu
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