HYDRODYNAMIC AND CONFORMATIONAL PROPERTIE S OF TRIFLUOROACETIC-ACID SOLUTIONS OF COPOLYESTERS BASED ON POLY(ETHYELENE TEREPHTHALATE) AND P-HYDROXYBENZOIC ACID

Authors
URINOV EU PERFILOV AN YULCHIBAEV BA KULICHIKHIN VG
Citation
Eu. Urinov et al., HYDRODYNAMIC AND CONFORMATIONAL PROPERTIE S OF TRIFLUOROACETIC-ACID SOLUTIONS OF COPOLYESTERS BASED ON POLY(ETHYELENE TEREPHTHALATE) AND P-HYDROXYBENZOIC ACID, Vysokomolekularnye soedinenia. Seria A, 37(5), 1995, pp. 874-878
Citations number
13
Categorie Soggetti
Polymer Sciences
Journal title
Vysokomolekularnye soedinenia. Seria A → ACNP
ISSN journal
05075475
Volume
37
Issue
5
Year of publication
1995
Pages
874 - 878
Database
ISI
SICI code
0507-5475(1995)37:5<874:HACPSO>2.0.ZU;2-E
Abstract
The hydrodynamic, molecular mass, and conformational characteristics o f trifluoroacetic acid solutions of commercial copolyester based on PE T and p-hydroxybenzoic acid were studied. The copolymer was fractionat ed according to composition and coefficients of the Mark-Kuhn-Houwink equations for translational and rotational viscosities were determined for the fractions of the copolymer. It was found that the conformatio nal parameters determined with account of draining through macromolecu lar coils differ substantially for copolyesters that are different in composition. The Kuhn segment for copolyesters with p-hydroxybenzoic a cid contents of 64 and 44 mol % comprises 40 x 10(-8) and 21 x 10(-8) cm, respectively.