Characterization Study of Various Solvents of Paraloid B72 for Bronze Artifacts Conservation by Surface Analysis

표면분석을 활용한 청동문화재 보존처리용 Paraloid B72의 용제별 특성 연구

  • Cho, Hyun-kyung (Department of Cultural Heritage Conservation Science, Kongju National University) ;
  • Cho, Nam-Chul (Department of Cultural Heritage Conservation Science, Kongju National University)
  • 조현경 (공주대학교 문화재보존과학과) ;
  • 조남철 (공주대학교 문화재보존과학과)
  • Received : 2008.01.25
  • Published : 2008.03.20

Abstract

We examined characterizations of Paraloid B72 films when it dissolved in four different solvents-acetone, MEK, toluene and xylene. The surface before and after coating were observed by optical microscope and AFM. Thickness and contact angle of films was measured and surface energy was calculated for grasping properties of films. We also tested adhesive strength of films by scratch tester and durability of films by performing yellowing test. The result was that xylene has better coating property than other solvents. Because 10% Paraloid B72 in xylene film is even, non-mottled, thin, stabilized in yellowish and has proper hydrophobic, we confirmed xylene is good solvent for bronze artifact conservation. However, other tests will need for finding appropriate concentration of Paraloid B72.

Acknowledgement

Supported by : 문화재청 국립문화재연구소