Effect of ionizing radiation on the color of featherwork.

Ana Carolina Delgado Vieira; Yasko Kodama; Larissa Otubo; Paulo de Souza Santos; Pablo Antonio Vásquez Salvador

doi:10.15392/bjrs.v9i1A.1367

Autores

Ana Carolina Delgado Vieira Museum of Archeology and Ethnology University of São Paulo Av. Professor Almeida Prado, 1466 05508-070 São Paulo, SP, Brazil ana.carolina.vieira@usp.br
Yasko Kodama Instituto de Pesquisas Energéticas e Nucleares [Institute of Energy and Nuclear Research] (IPEN / CNEN - SP) Av. Professor Lineu Prestes, 2242 05508-000 São Paulo, SP, Brazil
Larissa Otubo Instituto de Pesquisas Energéticas e Nucleares [Institute of Energy and Nuclear Research] (IPEN / CNEN - SP) Av. Professor Lineu Prestes, 2242 05508-000 São Paulo, SP, Brazil
Paulo de Souza Santos Instituto de Pesquisas Energéticas e Nucleares [Institute of Energy and Nuclear Research] (IPEN / CNEN - SP) Av. Professor Lineu Prestes, 2242 05508-000 São Paulo, SP, Brazil
Pablo Antonio Vásquez Salvador Instituto de Pesquisas Energéticas e Nucleares [Institute of Energy and Nuclear Research] (IPEN / CNEN - SP) Av. Professor Lineu Prestes, 2242 05508-000 São Paulo, SP, Brazil

DOI:

https://doi.org/10.15392/bjrs.v9i1A.1367

Palavras-chave:

Gamma irradiation, Cultural Heritage, Conservation, Ethnographic Objects, Feathers.

Resumo

Featherwork collections are usually stored and managed by ethnographic museums. Even though the featherwork manufacturing is still practiced by the indigenous communities, the offer of raw material and the contact with the surrounding society ended up reducing the production scale of such objects. Consequently, the preservation of the material culture is very important, particularly in museums. Biodegradation can affect featherworks mainly by xylophagous insects and moths’ action. The tropical Brazilian weather contributes to the contamination and proliferation of insects and fungi making the preservation conditions difficult. The use of gamma radiation for the disinfection of cultural heritage objects has shown to be a safe process and an excellent alternative to traditional methods usually involving toxic chemical pesticides. In this work are presented the preliminary results of the ionizing radiation effects on the color and morphological properties of a featherwork from the Museum of Archeology and Ethnology of the University of São Paulo (MAE/USP). Samples of feathers were selected from the artifact and irradiated with gamma rays at the Multipurpose Gamma Irradiation Facility at IPEN, applying absorbed doses between 0.5 kGy to 200 kGy. The results shown had no significant changes on color and morphological properties within the disinfection absorbed dose range applied.

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