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A rheological study of the ageing of emulsion and microsuspension‐based PVC plastisols
Author(s) -
Barroso Eva G.,
Duarte Fernando M.,
Couto Miguel,
M. Maia João
Publication year - 2008
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.28173
Subject(s) - plasticizer , rheology , materials science , composite material , mixing (physics) , emulsion , viscoelasticity , dispersion (optics) , masterbatch , chemical engineering , nanocomposite , physics , optics , quantum mechanics , engineering
Abstract A PVC plastisol is a homogeneous dispersion of PVC resin in a liquid continuous phase consisting basically of a plasticizer and a thermal stabilizer; the PVC resin being usually a fine powder is polymerized by emulsion or microsuspension processes. Plastisol rheology is affected by many aspects of the plastisol formulations, such as type and amount of each ingredient, the mixing procedure, temperature, and the effect of PVC resin properties. In this work, the ageing behavior of PVC plastisols with different resin types was studied, with the results showing an unexpected behavior in the elastic modulus, probably originating from plasticizer adsorption at the surface of the PVC particles. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008