ISSN:
1572-8943
Keywords:
conformation
;
crystallization dynamics
;
miscibility
;
PVDF/PMMA blends
;
simultaneous measurement
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Conformational formation and crystallization dynamics of miscible PVDF/at-PMMA and PVDF/iso-PMMA polymer blends from the molten state were studied by the simultaneous DSC/FT-IR measurement. Formation of TGTG' conformation occurred before starting crystallization exothermic peak in the PMMA content (ΦPMMA) range from 0 to 0.4 for both blends. The formation rate of TGTG' conformation, crystal growth rate and surface free energy of PVDF crystal in blends depended linearly on ΦPMMA for PVDF/at-PMMA, however, those rates for PVDF/iso-PMMA slightly influenced by ΦPMMA. These results suggested that the former was miscible blend in molecular level, however, the latter was a miscible blend with large concentration fluctuation or a partially segregated system.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01987426
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