Films of blends of poly(vinylidene Ñuoride) (PVDF) with isotactic and syndiotactic poly(methyl methacrylate) (i-PMMA and s-PMMA), obtained by casting tetrahydrofuran (THF) and dimethyl sulphoxide (DMSO) solutions onto windows, have been investigated by means of FTIR-microspectroscopy BaF 2 (FTIR-M),
FTIR-Microspectroscopy andDSC Studies of Poly(vinylidene fluoride)
✍ Scribed by Benedetti, Enzo; Catanorchi, Stefano; D’Alessio, Aldo; Moggi, Giovanni; Vergamini, Piergiorgio; Pracella, Mariano; Ciardelli, Francesco
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 491 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0959-8103
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✦ Synopsis
Poly(viny1idene fluoride) (PVDF) samples, obtained by casting from tetrahydrofuran solutions and submitted to various thermal treatments, have been examined by Fourier transform-infrared microspectroscopy (FTIR-M) and differential scanning calorimetry (DSC). This kind of analysis allowed us to examine microdomains of samples with different morphological characteristics and to obtain an indication of the polymorphism of PVDF. In some cases the simultaneous presence of two or three forms has been evidenced thanks to the comparison of FTIR-M spectra and DSC traces. Vibrational spectra of single crystalline forms can be recorded by FTIR-M on phase homogeneous microdomains.
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The surface of PVDF film was selectively modified by wet chemistry. Treatment with aqueous LiOH produced HF-elimination and the emergence of an oxygencontaining functionality. The XPS analysis clearly indicated the presence of ketone-, ether(epoxide)-, and alcohol motifs. The percentage of alcohols