Premium
Light‐scattering measurements on solutions of natural and synthetic polyisoprenes
Author(s) -
Allen P. W.,
Bristow G. M.
Publication year - 1960
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.1960.070041117
Subject(s) - virial coefficient , natural rubber , light scattering , solvent , scattering , polymer , materials science , polymer chemistry , natural polymers , synthetic rubber , polymer science , thermodynamics , chemical engineering , composite material , chemistry , optics , physics , organic chemistry , engineering
Abstract The light‐scattering behavior of solutions of natural and synthetic cis ‐1,4 polyisoprene is described. For milled natural rubber values of M̄ w increase as the solvent power of the solvent is increased and, at the same time, the second virial coefficient tends to zero. These effects may be due to compact (e. g., branched) structures. With unmilled natural rubber there is evidence for the existence of microgel. Synthetic polyisoprene shows the behavior expected of a linear polymer.