Improved controlled temperature and relative humidity DMA of artists’ acrylic emulsion paint films

The cleaning of acrylic emulsion paint surfaces poses a great challenge in the conservation field, due to their high water sensitivity. In this article, we present easy-to-make polymer hydrogels, made by UV-photopolymerization, that show excellent cleaning properties. The formulation of hydrogels obtained by UV-curing and their performance as dry cleaners for acrylic paints was investigated. First, different hydrogel formulations based on functional acrylic monomers were used to formulate a series of UV cross-linked hydrogels by fast UV photopolymerization. Their effectiveness on surface dirt removal was investigated by SEM microscopy and colorimetry. The hydrogels showed excellent cleaning properties and controlled water release, and they still performed satisfactorily after several cleaning uses. The obtained UV-hydrogels were compared to the well-known agar gels, showing benefits in terms of reducing excess water. This article shows that easy-to-make UV-cured hydrogels are an efficient tool for the cleaning of surface dirt from water-sensitive paintings, overcoming the limits of traditional cleaning methods.

Download Full-text

A Preliminary Evaluation of the Surfaces of Acrylic Emulsion Paint Films and the Effects of Wet-Cleaning Treatment by Atomic Force Microscopy (AFM)

Studies in Conservation ◽

10.1179/204705811x13110713013317 ◽

2011 ◽

Vol 56 (3) ◽

pp. 216-230 ◽

Cited By ~ 18

Author(s):

Elli Kampasakali ◽

Bronwyn Ormsby ◽

Antonino Cosentino ◽

Costanza Miliani ◽

Tom Learner

Keyword(s):

Atomic Force Microscopy ◽

Preliminary Evaluation ◽

Acrylic Emulsion ◽

Force Microscopy ◽

Emulsion Paint ◽

Atomic Force ◽

Paint Films ◽

Cleaning Treatment

Download Full-text

Evolution of the viscoelastic properties of painting stratigraphies: a moisture weathering and nanoindentation approach

Heritage Science ◽

10.1186/s40494-021-00552-x ◽

2021 ◽

Vol 9 (1) ◽

Author(s):

Mathilde Tiennot ◽

Davide Iannuzzi ◽

Erma Hermens

Keyword(s):

Mechanical Properties ◽

Relative Humidity ◽

Cultural Heritage ◽

Mechanical Behaviour ◽

Viscoelastic Properties ◽

Viscoelastic Behaviour ◽

Storage And Loss Moduli ◽

Heritage Studies ◽

Paint Films ◽

The Impact

AbstractIn this investigation on the mechanical behaviour of paint films, we use a new ferrule-top nanoindentation protocol developed for cultural heritage studies to examine the impact of repeated relative humidity variations on the viscoelastic behaviour of paint films and their mechanical properties in different paint stratigraphies through the changes in their storage and loss moduli. We show that the moisture weathering impact on the micromechanics varies for each of these pigment-oil systems. Data from the nanoindentation protocol provide new insights into the evolution of the viscoelastic properties dsue to the impact of moisture weathering on paint films.

Download Full-text