Relaxation times in transient electric birefringence and electric‐field light scattering of flexible polymer chains

1995 ◽  
Vol 103 (17) ◽  
pp. 7631-7639 ◽  
Author(s):  
S. Navarro ◽  
M. C. Lopez Martinez ◽  
J. Garcia de la Torre
Keyword(s):  
Light Scattering ◽  
Electric Field ◽  
Relaxation Times ◽  
Polymer Chains ◽  
Electric Birefringence ◽  
Flexible Polymer ◽  
Transient Electric Birefringence

scholarly journals Study of hyaluronic acid flexibility by electric birefringence

1983 ◽  
Vol 213 (3) ◽  
pp. 671-677 ◽  
Author(s):  
H H Trimm ◽  
B R Jennings
Keyword(s):  
Hyaluronic Acid ◽  
Molecular Conformation ◽  
Persistence Length ◽  
Relaxation Times ◽  
Electrical Characteristics ◽  
Random Coils ◽  
Electric Birefringence ◽  
Dilute Aqueous Solution ◽  
Transient Electric Birefringence ◽  
20 Nm

Transient-electric-birefringence experiments were conducted on four samples of hyaluronic acid over the molecular-mass (M) range 5 X 10(4)-4 X 10(6) in dilute aqueous solution. The geometrical, optical and electrical characteristics were monitored via the rotary relaxation times, optical-polarizability antisotropies and electrical polarizabilities respectively. Each indicates the molecular conformation to be consistent with some degree of rigidity at low M but that this does not persist at high M. The molecules do not become true random coils, but are best characterized in terms of a persistence length of 20 nm or 20 disaccharide units.

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