Abstract
The thermodynamic and morphological features of thermoreversible gels formed by low molecular weight fractions of linear polyethylene and by n-bydrocarbons formed as a result of crystallization from dilute and moderately dilute solutions have been investigated. The critical concentration for gel formation, c * , of the polyethylenes follows an unusual pattern with molecular weight. A discontinuity is observed at about M=4×10 3 followed by an initial decrease in c * as the chain length is decreased. With a further decrease in molecular weight, c * becomes invariant. These unusual results can be attributed to the formation of extended chain crystallites.
Published Version
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