EQUILIBRIUM-CONSTANTS AND THE PREDICTION OF MISCIBILITY WINDOWS FOR POLYMER BLENDS CONTAINING POLY(TETRAFLUOROETHYLENE-ALT-VINYL ALCOHOL) | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

6592736

Reference Type

Journal Article

Title

EQUILIBRIUM-CONSTANTS AND THE PREDICTION OF MISCIBILITY WINDOWS FOR POLYMER BLENDS CONTAINING POLY(TETRAFLUOROETHYLENE-ALT-VINYL ALCOHOL)

Author(s)

Coleman, MM; Yang, XM; Zhang, HX; Painter, PC; Scherer, KV; ,

Year

1993

Is Peer Reviewed?

Yes

Journal

Journal of Polymer Science. Part A, Polymer Chemistry
ISSN: 0887-624X
EISSN: 1099-0518

Publisher

JOHN WILEY & SONS INC

Location

NEW YORK

Volume

Issue

Page Numbers

2039-2056

DOI

10.1002/pola.1993.080310811

Web of Science Id

WOS:A1993LG75900011

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-0027627792&doi=10.1002%2fpola.1993.080310811&partnerID=40&md5=eeed27a6e54965a60c702a5731aa5143
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Abstract

Theoretical calculations of miscibility windows for binary polymer blends in which one component is an essentially alternating copolymer of tetrafluoroethylene and vinyl alcohol (FVOH) are reported. FVOH has an inherently low solubility parameter [almost-equal-to 6.2 (cal. cm-3)0.5] that is outside the range commonly encountered in miscible polymer blends and thus represents a stringent test of the predictive capabilities of an association model we have used in previous work. The application of this model requires that we determine dimensionless equilibrium constants describing the self-association of a model compound 3,4-pentafluorobutan-2-ol (PFB) at 25-degrees-C from infrared spectroscopic data. Analogous equilibrium constants for FVOH were scaled from those of PFB by taking into account differences in the molar volume of the model and the specific repeat of the copolymer (see M. M. Coleman, J. F. Graf, and P. C. Painter: Specific Interactions and the Miscibility of Polymer Blends, Technomic, Lancaster, PA, 1991). Equilibrium constants describing the inter-association of FVOH with ester type carbonyl groups were obtained from spectroscopic studies of miscible blends with poly (ethyl methacrylate). These equilibrium constant values were then used to calculate theoretical miscibility windows for the complete range of blends of FVOH with polymethacrylates, ethylene-co-methyl acrylate, styrene-co-methyl acrylate, and ethylene-co-vinyl acetate copolymers. Experimental results performed in our laboratories confirm the general validity of the predicted miscibility windows.