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Filling‐level effect on the physical properties of MgBr~2~‐ and MgCl~2~‐filled poly(vinyl acetate) films by H. M. Zidan is a Materials Science article available to read on EtoBox.

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## Abstract The structural properties of poly(vinyl acetate) (PVAc) films filled with different levels of MgBr~2~ or MgCl~2~ were investigated. Differential scanning calorimetry revealed that, at certain filling levels of MgBr~2~ or MgCl~2~, two new transitions appeared. The first one was due to the α relaxation (__T__~α~) associated with a crystalline region, and the second was due to the melting temperature (__T__~m~). This implies that a crystalline phase was formed in the polymeric matrix. Changes occurring in __T__~α~, __T__~m~, and the melting peak area as a function of the filling level were examined. The X‐ray diffraction (XRD) pattern revealed that the pure PVAc film was amorphous. However, the addition of MgBr~2~ or MgCl~2~ led to the formation of a crystalline phase in the polymeric matrix that depended on the filling level. XRD also demonstrated that the structural changes depended not only on the metal ions but also on the halide ions. Scanning electron microscopy images for the studied samples were examined. © 2002 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 41: 112–119, 2003

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Author

H. M. Zidan

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0887-6266)

Published

2002

Language

EN

Field

Materials Science (Physical Sciences)