Premium
Estimation and characterization of polyester oligomers
Author(s) -
Shukla S. R.,
Kulkarni K. S.
Publication year - 1999
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19991121)74:8<1987::aid-app12>3.0.co;2-g
Subject(s) - oligomer , chlorobenzene , chloroform , polyester , dissolution , trimer , extraction (chemistry) , phenol , solvent , formamide , chemistry , chromatography , materials science , polymer chemistry , dimer , organic chemistry , catalysis
Oligomers were obtained from polyester samples by solvent extraction and dissolution methods. Dioxane, chloroform, and chlorobenzene were used for the extraction method, whereas dimethyl formamide and phenol : tetrachloroethane (1 : 1 mixture) were used for the dissolution method. The oligomers were separated and analyzed by a thin‐layer chromatographic technique. It was observed that extraction with chloroform and dissolution with phenol : tetrachloroethane gave higher oligomer contents. Also, the values were higher for as‐spun fibers. Thin‐layer chromatographic analysis showed that in all the cases lower oligomers were obtained with a maximum of the cyclic trimer, whereas the efficiencies of solvents varied for removal of higher oligomers. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 1987–1991, 1999