Electro‐optic decay analysis for polydisperse systems. II. Discrete averaging for rods

Schweitzer, J.; Jennings, B. R.

doi:10.1002/bip.1973.360121022

Cited by 17 publications

References 4 publications

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Electric birefringence of cellulose trinitrate in acetone

Isles

Jennings

1976

Brit. Poly. J.

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Electric birefringence studies have been made on a sample of high molecular weight cellulose trinitrate in acetone. The molecule is shown to have only a permanent dipole moment and no significant anisotropic polarisability in this solvent. Both the rotary relaxation times obtained from transient time dependent effects and the amplitudes of the observed birefringence have been analysed in terms of theories for rigid rods, weakly bending rods, worm‐like chains and both flexible and stiff random coils. The study indicates that (a) electric birefringence data are sensitive to molecular flexibility and (b) that in this solvent, nitrocellulose of 12% nitrogen content appears to be a stiff, non free draining coil with a dipole moment of the order of a few debye (i.e. ⋍ 10−29 C m) per monomer unit.

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Electric birefringence of cellulose trinitrate in acetone

Isles

Jennings

1976

Brit. Poly. J.

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Water‐induced micellar structures of block copoly(oxyethylene‐oxypropylene‐oxyethylene) in o‐xylene

Zhou

Chu

1993

J Polym Sci B Polym Phys

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We previously reported the water‐induced micelle formation of copoly(oxyethylene‐oxy‐propylene‐oxyethylene), Pluronic L64, in o‐xylene. The micellar properties could be controlled by varying the water to EO ratio (Z) in micelles. in micelles. In this paper, laser light scattering, transient electric birefringence (TEB), and synchrotron small‐angle x‐ray scattering (SAXS) were used to study the micellar structure at different Z values. Both TEB and SAXS results further confirmed the micellar shape transition from that of a sphere to a nonspherical shape. A comparison between TEB and dynamic light‐scattering results as well as the SAXS experiments showed an ellipsoidal shape for micelles when Z > 1.3 with the oblate being the more reasonable form for fitting all the experimental parameters. The degree of asymmetry appeared to be not high. © 1993 John Wiley & Sons, Inc.

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Birefringent Techniques

Morris

Miles

1994

Physical Techniques for the Study of Food Biopolymers

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Electro‐optic decay analysis for polydisperse systems. II. Discrete averaging for rods

Cited by 17 publications

References 4 publications

Electric birefringence of cellulose trinitrate in acetone

Electric birefringence of cellulose trinitrate in acetone

Water‐induced micellar structures of block copoly(oxyethylene‐oxypropylene‐oxyethylene) in o‐xylene

Birefringent Techniques

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