Ve. Gul et al., FORMATION OF LIQUID-CRYSTALLINE STRUCTURE IN THE PROCESS OF FILM EXTRUSION FROM CELLULOSE DIACETATE, International journal of polymeric materials, 24(1-4), 1994, pp. 167-176
Liquid-crystalline (LC) polymer properties depend considerably on the
chemical structure of the rigid and flexible parts of the macromolecul
ar chains. The relation of these factors determines a complex of physi
cal and chemical properties and thus the operating characteristics. Re
alization of the LC state within a temperature range which is required
by processing and operating conditions is achieved by the synthesis o
f LC's of a certain structure. The formation of LC structures in cellu
lose diacetate by selection of plasticizer level and type is considere
d in this article. Plasticizer selection is determined by the ratio of
the polymer specific cohesion energies and the specific cohesion ener
gies of a combined plasticizer consisting of a true plasticizer with t
he addition of small amounts of a precipitator.