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Characterization of functionally terminated polybutadienes of low molecular weight
Author(s) -
Ahad Elie
Publication year - 1973
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/app.1973.070170204
Subject(s) - polybutadiene , osmometer , dispersity , gel permeation chromatography , vapor pressure osmometry , polymer chemistry , materials science , analytical chemistry (journal) , molar mass distribution , anisotropy , chemistry , chromatography , vapor pressure , organic chemistry , copolymer , polymer , composite material , optics , physics
A difunctional hydroxyl‐terminated polybutadiene (sample A) was characterized by light scattering (LS), vapor pressure osmometry (VPO), and gel permeation chromatography (GPC). Sample A was then esterified, and the product (sample B) was also characterized. Light‐scattering measurements were carried out in different solvents (some were theta solvents for polybutadiene), and the results were corrected for anisotropy. Values of M n (3100) and M w (8000) determined respectively by VPO and LS for samples A and B were similar to those computed by GPC using two sets of columns of different resolution. The value of 2.3 found for the polydispersity index M w / M n is higher than the value which is usually reported by other workers (ca. 1.3 to 1.7) for functionally terminated polybutadienes.