Study of intermolecular effects in linear polymers by magnetic susceptibility
1972; Taylor & Francis; Volume: 6; Issue: 2 Linguagem: Inglês
10.1080/00222347208212885
ISSN1525-609X
AutoresF. J. Baltá Calleja, J. M. Barrales‐Rienda,
Tópico(s)Polymer Nanocomposites and Properties
ResumoAbstract The diamagnetic susceptibility of poly(2,6-dimethyl-1,4-phenylene) oxide (PPO) and polyethylene sebacate (PES) precipitated from diluted solution was measured with reference to the additivity of atomic susceptibilities, in a wide range of molecular weights. The experimentally obtained linear relationship between molecular susceptibility and degree of polymerization permits the derivation, for both polymer systems, of an intermolecular constant μk, characteristic for the crystalline state. Constant μk depends not only on morphology but also on the chemical nature of intermolecular forces for each polymer. Accordingly, for crystalline PPO and PES, μk is notably larger than for crystalline polyethylene and polyethylene oxide. In addition, μk was shown empirically to be a function of the cohesion energy for each polymer species.
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