TY  - JOUR
A1  - Lavrenko, Peter N.
A1  - Strelina, Irina A.
A1  - Schulz, Burkhard
T1  - Dynamo-optical properties of poly(naphthylene oxadiazole)s in sulfuric acid
N2  - Flow birefringence induced in dilute solutions of poly[(1,4-naphthylene)-2,5-diyl-1,3,4-oxadiazole] and poly[2,6-naphthylene)-2,5-diyl-1,3,4-oxadiazole] in conc. sulphuric acid has been investigated. The shear optical coefficient was found for these polymers to be approximately double the value of that obtained in the same solvent for poly[(para-phenylene) -2,5-diyl-1,3,4-oxadiazole]. Rigid-chain behaviour of the polymers was characterized by hydrodynamic and dynamo-optical parameters evaluated with application of the worm-like chain model and the "method of similar structures". Change in optical anisotropy of a chain unit induced by incorporation of naphthylene groups into the main chain has been evaluated.
Y1  - 1997
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/24395
ER  -