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Viscosity—molecular weight relationship for masticated natural rubber
Author(s) -
Bristow G. M.,
Westall B.
Publication year - 1965
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.1965.070090211
Subject(s) - natural rubber , viscosity , molar mass distribution , materials science , toluene , molecular mass , intrinsic viscosity , mooney viscosity , polymer chemistry , composite material , polymer science , thermodynamics , chemistry , polymer , organic chemistry , physics , enzyme , copolymer
Intrinsic viscosity and osmotic molecular weight data are presented for toluene solutions of several types of natural rubber after mastication in air. For [η] < ca. 4 all these data fit the relationship, [η] = 7.11 × 10 −7 M̄ n 1.25 . At higher molecular weights deviations from this relation are found, the extent of which depend on the type of natural rubber used. These deviations are attributed to differences in initial molecular weight distribution.