![]() For example, use of acrylic paint allows the artist to build incredible impasto surfaces that dry quickly, without deforming. These should be considered when choosing materials to execute a work and when deciding on display locations and conditions. However, this does mean that unprotected paintings are at greater risk of requiring more aggressive cleaning practices.Ĭharacteristics of a painting’s construction also affect its tendency to retain foreign material and its subsequent ease of cleaning. GOLDEN Acrylics are formulated to optimize flexibility of the paint film and to maintain a reasonably low GTT. A higher GTT increases the risk of permanent damage to a painting from mishandling. ![]() Using harder acrylic polymers would result in a painting being more susceptible to cracking from impact or movement during shipping as the result of raising the glass transition temperature (GTT), the point at which the film will snap like glass instead of bending as plastic is expected to. The principal virtues of acrylic paints are their inherent film flexibility and lack of brittleness. While the manufacturer of acrylic paint can choose harder polymers that are less prone to this problem, there are trade-offs associated with their use. As this happens, any debris present can become adhered to the surface and will subsequently require relatively aggressive methods for removal. As temperatures increase, acrylic becomes softer, more flexible and may become tacky. “Thermoplastic” means that the relative hardness and flexibility of the polymer are influenced by changes in temperature. Regardless of whether this characteristic substantially affects dust attraction, based on our observations of acrylic paint and conversations with conservators, we know that the thermoplastic nature of the paint film can result in significant adhesion of particles to the surface. One theory is that they are prone to carrying a static charge, which results in greater dust attraction and retention. Acrylic paintings have unique attributes that affect their propensity for attracting and retaining dirt and grime. ![]() They can also get touched occasionally, either inadvertently or purposefully, and may become soiled from the contact. You can read more about it here.Īs with any surface around the home, office, or especially, in a public place, paintings become a depository for airborne dust. EDITOR’S NOTE (4/26/23): Please note that Polymer Varnish has been discontinued and replaced with Gloss Waterborne Varnish. ![]()
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