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http://dx.doi.org/10.12654/JCS.2019.35.2.06

Study on Degradation Characteristics and Chemical Cleaning Methods of Plasticized PVC for Conservation of Plastic Artifact  

Lee, Na Ra (Department of Heritage Conservation and Restoration, Graduate School of Cultural Heritage, Korea National University of Cultural heritage)
Chung, Yong Jae (Department of Heritage Conservation and Restoration, Graduate School of Cultural Heritage, Korea National University of Cultural heritage)
Publication Information
Journal of Conservation Science / v.35, no.2, 2019 , pp. 159-168 More about this Journal
Abstract
Plasticizers, which are added to plastics, can cause exudation, which means that the plasticizer comes out from surface of the plastics. This causes the surface of plastic artworks to become sticky, and this allows dust and pollutants to become attached to the surface. Therefore, in this study, the degradation characteristics and chemical cleaning methods of each type of plasticizer are evaluated using PVC specimens. To evaluate the degradation characteristics and chemical cleaning methods, microscopic observation, chromaticity and weight measurement, and FT-IR spectroscopy were performed. The results showed that PVCs containing different plasticizers have different degradation patterns. Especially, the PVC containing TOTM showed discoloration and exudation. In the evaluation of the chemical cleaning methods, ethyl alcohol and KOH solution showed good effects, but their stability was not good. Surfactant was found to have a good cleaning effect and stability as a cleaner for exudated plasticizers.
Keywords
Conservation of plastics; Plasticized PVC; Exudation of plasticizer; Degradation characteristic; Chemical cleaning;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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