Stereocomplex Formation in Blends of Block Copolymers of Syndiotactic Poly(methyl methacrylate) (PMMA)-Poly(dimethylsiloxane) (PDMS) and Isotactic PMMA. Differential Scanning Calorimetry (DSC) and Dynamic Mechanical Thermal Analysis (DMTA)

1995 ◽  
Vol 28 (6) ◽  
pp. 1952-1958 ◽  
Author(s):  
H. Deuring ◽  
G. O. R. Alberda van Ekenstein ◽  
G. Challa ◽  
J. P. Mason ◽  
T. E. Hogen-Esch
Keyword(s):  
Thermal Analysis ◽  
Differential Scanning Calorimetry ◽  
Block Copolymers ◽  
Methyl Methacrylate ◽  
Dynamic Mechanical Thermal Analysis ◽  
Scanning Calorimetry ◽  
Poly Methyl Methacrylate ◽  
Dynamic Mechanical ◽  
Stereocomplex Formation

Miscibiuty in Blends of Polybenzimidazole and Fluorine Containing Polyimides

1989 ◽  
Vol 171 ◽  
Author(s):  
Hiroaki Yamaoka ◽  
Norman E. Aubrey ◽  
William J. MAcknight ◽  
Frank E. Karasz
Keyword(s):  
Thermal Analysis ◽  
Differential Scanning Calorimetry ◽  
Phase Separation ◽  
Dynamic Mechanical Thermal Analysis ◽  
Room Temperature ◽  
Single Phase ◽  
Scanning Calorimetry ◽  
Dynamic Mechanical

ABSTRACTBlends of polybenzimidazole (PBI) with either of two fluorine-containing polyimides were prepared by casting from solution and by precipitation. Dynamic mechanical thermal analysis (DMTA) and differential scanning calorimetry (DSC) were used to study miscibility in the two blend systems.The blends of PBI with the first polyimide, the polysulfonimide Pl-1, consisted of a single phase when the blends contained less than 30 wt% Pl-1; above 50 wt% Pl-1, phase separation occurred even at room temperature. The PBI blends containing the second polyimide, Pl-2, were immiscible.

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