Crystallization of poly(vinylidene fluoride)-poly(methyl methacrylate) blends: analysis of the molecular parameters controlling the nature of poly(vinylidene fluoride) crystalline phase

• Published in: Macromolecules Vol. 21; no. 10; pp. 2988 - 2994
• Main Authors: Leonard, C, Halary, J. L, Monnerie, L
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 01.10.1988
• Subjects: Applied sciences; Crystallization; Exact sciences and technology; Organic polymers; Physicochemistry of polymers; Properties and characterization; Infrared spectrometry; Molecular parameter; Crystalline phase; Tacticity; Fourier transformation; Vinylidene fluoride polymer; Crystallization; Methyl methacrylate polymer; Chemical composition; Glass transition temperature; Mixture; Conformation
• ISSN: 0024-9297; 1520-5835
• DOI: 10.1021/ma00188a016

The nature of the crystalline phase of PVDF in compatible blends with PMMAs of different tacticities was investigated by using a FT-IR technique. The beta phase was observed after quenching from the melt and further annealing above the glass transition temperature over a composition range depending on PMMA tacticity. Two main factors were identified as controlling the nature of the crystalline phase: the nucleation temperature, and the increase in tt conformations of PVDF due to specific interactions. It appears that the location of the glass transition temperature of the amorphous component is responsible for much of the crystallization behavior of PVDF. 26 ref.--AA