Journal of Thermal Analysis and Calorimetry

, Volume 90, Issue 2, pp 503–508 | Cite as

Improved controlled relative humidity dynamic mechanical analysis of artists’ acrylic emulsion paints

Part II. General properties and accelerated ageing
  • B. Ormsby
  • G. Foster
  • T. Learner
  • S. Ritchie
  • M. Schilling
Regular papers Organics/Polymers


After improvements were made to a modified Polymer Labs MkIII DMTA instrument to facilitate repeatable controlled humidity (RH) experiments using isothermal and thermal scanning conditions, the viscoelastic properties of titanium white pigmented artists’ acrylic emulsion films were measured in tensile mode. The effects of temperature, relative humidity and accelerated ageing regimes on two brands of titanium white paints were explored. These paints are highly responsive to changes in temperature and relative humidity, formulation differences affect properties slightly, and while light ageing had a negligible effect, thermal ageing resulted in decreased storage modulus and increased film density.


acrylic emulsion accelerated ageing conservation dynamic mechanical analyser light paint preservation relative humidity temperature thermal titanium white 


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Copyright information

© Springer Science+Business Media, LLC. 2007

Authors and Affiliations

  • B. Ormsby
    • 1
  • G. Foster
    • 2
  • T. Learner
    • 1
  • S. Ritchie
    • 3
  • M. Schilling
    • 4
  1. 1.Conservation DepartmentTate, LondonUK
  2. 2.Smithers RapraShawbury, Shrewsbury, ShropshireUK
  3. 3.School of Engineering and Computer ScienceExeter UniversityExeterUK
  4. 4.Getty Conservation InstituteLos AngelesUSA

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