Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/80732
Type: Artigo de periódico
Title: IN-SITU CHEMICAL-ANALYSIS OF DOMAINS IN POLYMER BLENDS BY OPTICAL FLUORESCENCE MICROSCOPY
Author: DIBBERNBRUNELLI, D
ATVARS, TDZ
Abstract: Poly(vinyl alcohol) (PVA)/poly(vinyl acetate) (PVAc) blends in different proportions show phase separation in the solid state. The dimensions, shapes, and distributions of the domains produced by the phase separation process are dependent on the composition and can be observed by conventional optical microscopy. However, using fluorescence optical microscopy of polymer blends in different compositions containing anthracene and/or fluorescein molecules dissolved in the matrices we were able to do a chemical discrimination of each domain. We also observed that anthracene is mainly localized in PVAc domains and fluorescein in PVA domains, and that the diffusion process of these fluorophers within the matrices is controlled by specific polymer-dye interactions. (C) 1995 John Wiley & Sons, Inc.
Editor: John Wiley & Sons Inc
Rights: fechado
Identifier DOI: 10.1002/app.1995.070580410
Date Issue: 1995
Appears in Collections:Unicamp - Artigos e Outros Documentos

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