Intimate blend of poly(ethylene terephthalate) and poly(ethylene 2,6-naphthalate) via formation with and coalescence from their common inclusion compound with γ-cyclodextrin

• Published in: Journal of polymer science. Part B, Polymer physics Polymer physics, 2003-01, Vol.41 (2), p.139-148
• Main Authors: Bullions, T. A., Edeki, E. M., Porbeni, F. E., Wei, M., Shuai, X., Rusa, C. C., Tonelli, A. E.
• Format: Article
• Language: English
• Subjects: Applied sciences; Exact sciences and technology; Organic polymers; PET/PEN blend; Physicochemistry of polymers; Properties and characterization; Structure, morphology and analysis
• ISSN: 0887-6266; 1099-0488
• DOI: 10.1002/polb.10366

The experimental procedures to place poly(ethylene 2,6‐naphthalate) (PEN) guest molecules within γ‐cyclodextrin (γ‐CD) host molecules are described along with the subsequent verification of inclusion‐compound (IC) formation. In addition, the simultaneous complexing of PEN and poly(ethylene terephthalate) (PET) with γ‐CD to form their common IC is documented. Coalescence from their common γ‐CD IC generates an intimate blend of the PET and PEN polymers contained therein. Thermal analysis via differential scanning calorimetry reveals thermal behavior indicative of an intimate blend of PET and PEN. 1H NMR analysis confirms that the intimate blending of PET and PEN achieved by coalescence from their common γ‐CD IC is not due to transesterification into a PET/PEN copolymer during thermal analysis. © 2002 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 41: 139–148, 2003