Unperturbed characteristics of atactic polypropylene: Some new theta solvents based on aliphatic ketones

Authors
Florian, S Lathova, E Lath, D
Citation
S. Florian et al., Unperturbed characteristics of atactic polypropylene: Some new theta solvents based on aliphatic ketones, J MACR S PU, A36(11), 1999, pp. 1771-1781
Citations number
25
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY
ISSN journal
10601325 → ACNP
Volume
A36
Issue
11
Year of publication
1999
Pages
1771 - 1781
Database
ISI
SICI code
1060-1325(1999)A36:11<1771:UCOAPS>2.0.ZU;2-C
Abstract
Solution properties of atactic polypropylene were studied in thermodynamica lly good solvents (toluene, n-butyl chloride and decalin) and in theta solv ents (ethyl-n-butyl ketone, methyl-n-hexyl ketone, 1-nonanol and 2-ethylhex anol). Mark-Houwink-Sakurada relations within the temperature range between 15 degrees C and 60 degrees C, unperturbed dimensions K-theta = 1.62 x 10( -3) at T-theta = 19.7 degrees C in methyl-n-hexyl ketone (the K-theta and T -theta values for ethyl-n-butyl ketone are the same) and the temperature co efficient of unperturbed dimensions d In r(0)(-2)/dT = -2.44x10(-3)K(-1) we re established.