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A study on viscoelasticity of polyurethane–organoclay nanocomposites
Author(s) -
Jin J.,
Song M.,
Yao K. J.,
Chen L
Publication year - 2006
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.22891
Subject(s) - organoclay , materials science , nanocomposite , composite material , thermal stability , polyurethane , viscoelasticity , polymer , dynamic mechanical analysis , chemical engineering , engineering
Polyurethane (PU)/organically modified layered silicate (organoclay) nanocomposites were prepared by in situ polymerization. The viscoelasticity of PU–organoclay nanocomposites was investigated. The results suggest that the addition of organoclay resulted in the increase in the elasticity of PU and the decrease in damping property, and improvement of the thermal stability of PU significantly. However, it was also found that the addition of organoclay did not enhance the modulus of PU significantly. It was found that at high contents of soft segments, the modulus of PU decreased with the addition of organoclay. Hysteresis results indicated that energy dissipation increased with increasing organoclay. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 99: 3677–3683, 2006