Microstructure of Woolen Fiber Dyed by PbCrO4 Yellow Dyeing Technique Imported into Japan in the Last Edo Period

DOI Web Site Web Site 1 Citations 26 References
  • Sugioka Nahoko
    Graduate School of Cultural Conservation, Tokyo University of the Arts
  • Kitada Masahiro
    Graduate School of Cultural Conservation, Tokyo University of the Arts

Bibliographic Information

Other Title
  • 江戸末期に技術移入されたＰｂＣｒＯ４黄色染色法を用いて染めた羊毛の微細構造
  • エド マッキ ニ ギジュツ イニュウ サレタ PbCrO4 キイロ センショクホウ オ モチイテ ソメタ ヨウモウ ノ ビサイ コウゾウ

Search this article

Description

The microstructure of woolen fiber dyed by the PbCrO4 yellow dyeing technique imported into Japan in the last Edo period has been investigated. The woolen fiber is dyed using lead acetate and potassium chromate. The color is measured with a spectrophotometer. The microstructures are observed using a scanning electron microscope and transmission electron microscope. The crystal structure is determined with an X-ray diffractometer. The composition is analyzed using an energy dispersive X-ray spectrometer. A thin film is fabricated by the focused ion beam method to observe the nanostructures. The cross section is flattened by ion milling to reduce the damage to the surface. The absorption edge at 558 nm (2.2 eV) is observed in the reflectance spectrum for lead chromate woolen threads. The edge agrees with that of PbCrO4. The dyestuff compounds, monoclinic and orthorhombic PbCrO4, are detected by X-ray diffraction analysis. The crystal compound PbCrO4 precipitates on the woolen fiber surface; and the length and width of the crystals are 0.2~1.2 μm and 0.05~0.4 nm, respectively. Chromium, lead and sulfur are detected from the inside of the fiber. referential precipitation is observed in the fiber, and most of the precipitates align along a specific place in the fiber. The precipitate distribution shows a correlation between the precipitation phenomenon and the woolen fiber structure, and also reveals the microstructures in the woolen fiber. Although the precipitate on the fiber surface is crystalline, nanometer-size precipitates in the fiber are amorphous.<br>

Journal

Citations (1)*help

See more

References(26)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top