Evaluation of compatibility in polymer blend systems by simultaneous DSC-FTIR measurement |
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| Authors: | S Y Jung G Zhang H Yoshida |
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| Institution: | (1) Department of Chemical and Biological Engineering, The University of British Columbia, Vancouver, BC, Canada;(2) Xpansion Instruments, Tallmadge, OH, USA; |
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| Abstract: | The concept of crystallization dynamics method evaluating the miscibility of binary blend system including crystalline component
was proposed. Three characteristic rates, nucleation, crystal growth rates (N*, G*) and growth rate of conformation (G
c*) were used to evaluate the miscibility of PVDF/at-PMMA and PVDF/iso-PMMA by the simultaneous DSC-FTIR. N*, G* and G
c* depended remarkably on both temperature and blend fraction (ϕPMMA) for PVDF/at-PMMA system, which indicated the miscible system. PVDF/iso-PMMA showed small ϕPMMA dependency of N*, G* and G
c*, was estimated the immiscible system. The ΔT/T
m0 values, corresponding to Gibbs energy required to attend the constant G* and G
c*, evaluated from G* and G
c* showed the good linear relationships with different slope. The experimental results suggested that the concentration fluctuation
existed in PVDF/iso-PMMA system. |
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| Keywords: | |
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