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Elastic characteristics of branched‐network polymers
Author(s) -
Dakin V. I.
Publication year - 1996
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/(sici)1097-4628(19960516)60:7<999::aid-app10>3.0.co;2-p
Subject(s) - polymer , copolymer , materials science , moduli , elastic modulus , polymer science , basis (linear algebra) , series (stratigraphy) , polymer network , polymer chemistry , composite material , thermodynamics , mathematics , physics , geometry , geology , paleontology , quantum mechanics
The computed dependencies of elastic characteristics of branched‐network polymers were obtained on the basis of the Takayanagi series model. The moduli ratio (λ) for branched‐network and branched polymers increases as a result of an increase of the moduli ratio of network and branched phases ( E * net / E * br ) and the network phase fraction (V net ). The λ‐increase as a function of V net is larger than in the case of the E * net / E * brdependence. On the basis of computed dependencies, the experimental results for the radiation crosslinked SBS block copolymer were considered. The experimental results agree with the computed de‐pendencies for the hetergeneous branched‐network polymers with E * net / E * br≈ 20. The influence of entanglements on the elastic characteristics of branched‐network polymers is discussed. © 1996 John Wiley & Sons, Inc.