S. Cohen, J.C. Liu, et al.
MRS Spring Meeting 1999
Rheological and rheooptical properties of poly(di-n-hexylsilane) were investigated in oscillatory and steady-shearing experiments. The samples consisted of concentrated solutions up to 6 wt% of a very high molecular weight polymer (Mw = 4.6 × 106) dissolved in decalin. Experiments showed that the flowinduced shear and normal stresses were linearly related to the birefringence and that the constant of proportionality-the stress-optical coefficient-was larger than that of typical polymers. The enhanced stress-optical coefficient is a result of both the intrinsic rigidity of the polysilane chain and the higher polarizability of the σ-conjugated electrons. This result is similar to that found recently for a π-conjugated polymer. Additional results on the concentration dependence of various rheological properties are reported. © 1991, American Chemical Society. All rights reserved.
S. Cohen, J.C. Liu, et al.
MRS Spring Meeting 1999
M. Hargrove, S.W. Crowder, et al.
IEDM 1998
J.R. Thompson, Yang Ren Sun, et al.
Physica A: Statistical Mechanics and its Applications
Elizabeth A. Sholler, Frederick M. Meyer, et al.
SPIE AeroSense 1997