Abstract
The crystallization modification of poly(vinylidene fluoride) (PVDF) was investigated for the blend films of PVDF and poly(methyl methacrylate) (PMMA). The mass crystallinity (χ c) and further, the β-phase content (F (β)) of PVDF, were studied for the asprepared blend films with different mass ratios. In addition, the variations of χ c and F (β) were systematically probed once the PMMA component was removed from the related blend systems. DSC, FTIR and XRD measurements all indicated that 1) χ c, F (β) and even the content of α-phase (F (β)) decreased with the addition of PMMA; 2) with the extraction of PMMA, both χ c and F (β) increased while F (β) decreased. It is worth noting that the increase of χ c and F (β) depended on the relative amount of extracted PMMA (E PMMA), i.e., the more PMMA was removed, the more χ c and F (β) increased. These results reveal the hindrance effect from the PMMA constituent to the crystallization of PVDF, and consequently, this restriction would be released when the PMMA was extracted.
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Sun, J., Yao, L., Zhao, QL. et al. Modification on crystallization of poly(vinylidene fluoride) (PVDF) by solvent extraction of poly(methyl methacrylate) (PMMA) in PVDF/PMMA blends. Front. Mater. Sci. 5, 388–400 (2011). https://doi.org/10.1007/s11706-011-0152-2
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DOI: https://doi.org/10.1007/s11706-011-0152-2