Flow birefringence and optical anisotropy of molecules of copolymers of para- and meta-phenylene-1,3,4-oxadiazoles

European Polymer Journal

Volumn 36, Issue 9, 2000, Pages 1927-1932

  Lavrenko, P N ^a   Strelina, I A ^a   Okatova, O V ^a   Schulz, B ^b  

^a INSTITUTE OF MACROMOLECULAR COMPOUNDS   (Russian Federation)

^b UNIVERSITY OF POTSDAM   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

ANISOTROPY; AROMATIC COMPOUNDS; BIREFRINGENCE; CHEMICAL BONDS; COMPOSITION; HYDRODYNAMICS; MACROMOLECULES; MOLECULAR DYNAMICS; MOLECULAR ORIENTATION; MOLECULAR WEIGHT; SULFURIC ACID;

ADDITIVITY LAW OF CHAIN FLEXIBILITIES; FLOW BIREFRINGENCE; HOMOPOLYMERS; MAXWELL EFFECT; MOLAR COMPOSITION; OPTICAL ANISOTROPY;

COPOLYMERS;

EID: 0033682179     PISSN: 00143057     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0014-3057(99)00255-4     Document Type: Article

References (19)

1. Tsvetkov VN, Pogodina NV, Starchenko LV, Malichenko BF, Tsipina ON, Kulichikhina TA. Flow birefringence and equilibrium rigidity of molecules of para and meta aromatic polyamides copolymers. Vysokomol Soedin 1981; A23:2681-90.
2. Pogodina NV, Starchenko LV, Tsvetkov VN, Kudriavtsev GI, Volokhina AB, Lukashova NI, Kalmykova VD. Optical anisotropy and rigidity of molecules of polycyclohexanamide, polycaprolactame, and their copolymers. Vysokomol Soedin 1980; A22:1467-73.
3. Korschak W, Krongaus ES, Gribova IA, Krasnov AP, Sheina BE, Lioznov BS. Synthesis and properties of mixed poly-1,3,4-oxadiazoles. Vysokomol Soedin 1973; A15:748-52.
4. Pogodina NV, Starchenko LV, Pozhivilko KS, Kalmykova VD, Kulichikhina TA, Volokhina AN, Kudriavtsev GI, Tsvetkov VN. Flow birefringence and rigidity of molecules of para-aromatic copolyamides. Vysokomol Soedin 1981; A23:2185-91.
5. Ueda M, Sugita H. Synthesis of poly (1,3,4-oxadiazole)s by direct polycondensation of dicarboxylic acids with hydrazine sulfate using phosphorus pentoxide/methanesulfonic acid as condensing agent and solvent. J Polym Sci Polym Chem 1988;26:159-66.
6. Schulz B, Brehmer L. Poly(arylene-1,3,4-oxadiazoles)s. In: Salamone JC, editor. Polym mater encyclopedia, vol. 7. New York: CRC Press, 1996. p. 5595-604.
7. Lavrenko PN, Okatova OV, Garmonova TI, Cherkasov VA, Leibnitz E, Schulz B. Conformational properties of poly-p-phenylene-1,3,4-oxadiazole molecules in sulphuric acid. Eur Polym J 1993;29(6):893-8.
8. Lavrenko PN, Okatova OV, Khokhlov KS. Cuvette for studying optical nonuniformitics in aggressive liquids. Instrum Experim Techniques 1977;20(5):1477-9.
9. Tsvetkov VN. Rigid-chain polymers. New York: Plenum Press, 1989.
10. Lavrenko PN, Okatova OV, Schulz B, Andreeva KA, Strelina IA. Hydrodynamic and electro-optical properties of poly (1,3-phenylene-1,3,4-oxadiazole) molecules in sulphuric acid. Eur Polym J 1999;35(4):655-61.
11. Tsvetkov VN, Lavrenko PN, Bushin SV. Hydrodynamic invariant of polymer molecules. J Polym Sci Polym Chem Ed 1984;22(11, 2):3447-86.
12. Tsvetkov VN. Structure of monomer unit and flexibility of the rigid-chain polymer molecules. Vysokomol Soedin 1977;19:2171-90.
13. Lavrenko PN, Andreeva KA, Strelina IA, Garmonova TI, Schulz B. Optical anisitropy and flexibility of molecules poly-2,5-(1,3-phenylenoxadiazole) in sulfuric acid. Vysokomol Soedin, in press.
14. Kuhn W, Kuhn H, Buchner P. Hydrodynamisches Verhalten von Macromolekulen in Losung. Ergebn exakt Naturwiss 1951;B25:1-108.
15. Birshtein TM, Budtov VP, Frisman EV, Yanovskaya NK. Influence of the copolymer composition on the anisotropic properties of its molecules. Vysokomol Soedin 1962;A4:455-62.
16. Birshtein TM. The flexibility of polymer chains with flat cyclic groups. Vysokomol Soedin 1977;A19:54-62.
17. Flory PJ. Statistical mechanics of chain molecules. 2nd ed. Munchen: Hanser, 1989.
18. Pavlova SSA, Ronova IA, Timofeeva GI, Dubrovina LV. On the flexibility of cyclochain polymers. J Polym Sci Polym Phys Ed 1993;31:1725-57.
19. Lavrenko PN, Okatova OV, Schulz B. Hydrodynamic properties and conformations of meta- and para-isomers of poly(phenyleneoxadiazole) in sulfuric acid. Vysokomol Soedin 1998;A40:1118-24.