New high-coordination lattice model for rotational isomeric state polymer chains

1995 ◽  
Vol 91 (16) ◽  
pp. 2435 ◽  
Author(s):  
Roland F. Rapold ◽  
Wayne L. Mattice
Keyword(s):  
Isomeric State ◽  
Lattice Model ◽  
Polymer Chains ◽  
Rotational Isomeric State ◽  
High Coordination

Average Dipole Moments of Aromatic Polymer Chains

1996 ◽  
Vol 8 (3) ◽  
pp. 427-431 ◽  
Author(s):  
J A Hinkley
Keyword(s):  
Isomeric State ◽  
Dipole Moments ◽  
Polymer Chains ◽  
Mean Square ◽  
Aromatic Polymer ◽  
Aromatic Polyimides ◽  
Rotational Isomeric State ◽  
Polar Substituents

Recently, certain aromatic polyimides with polar substituents were shown to exhibit piezoelectricity after poling. To help interpret these results, mean square chain dipole moments for model chains were calculated using a rotational isomeric state scheme. Average moments ranged from 1.7 to 3.6 debye2 per backbone link, and correlated well with the magnitudes of the piezoelectric coefficients within the series.

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