FLOW BIREFRINGENCE AND OPTICAL ANISOTROPY OF THE MOLECULES OF CYANOETHYLATED CELLULOSE ETHERS

Authors
LAVRENKO PN STRELINA IA MAGARIK SY KUTSENKO LI
Citation
Pn. Lavrenko et al., FLOW BIREFRINGENCE AND OPTICAL ANISOTROPY OF THE MOLECULES OF CYANOETHYLATED CELLULOSE ETHERS, Vysokomolekularnye soedinenia. Seria A, 37(12), 1995, pp. 2007-2012
Citations number
22
Categorie Soggetti
Polymer Sciences
Journal title
Vysokomolekularnye soedinenia. Seria A → ACNP
ISSN journal
05075475
Volume
37
Issue
12
Year of publication
1995
Pages
2007 - 2012
Database
ISI
SICI code
0507-5475(1995)37:12<2007:FBAOAO>2.0.ZU;2-F
Abstract
The flow birefringence of cyanoethyl hydroxypropyl cellulose (CEHPC) a nd cyanoethyl hydroxyethyl cellulose (CEHEC) was studied in a number o f solvents with differing indexes of refraction. Dependence of the opt ical shear coefficient of CEHPC in ethylacetate on the molecular mass of polymer was determined in the range from 28 x 10(3) to 580 x 10(3). The role of the micro- and macroform effects is discussed. The high i ntrinsic optical anisotropy (11 x 10(-25) cm(3)) of the chain unit of a CEHPC molecule is attributed to some structural features and anisotr opy of the substituent groups.