By C. Wayne Smith
Read or Download Archaeological Conservation Using Polymers: Practical Applications for Organic Artifact Stabilization (Texas A&M University Anthropology Series) PDF
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Additional resources for Archaeological Conservation Using Polymers: Practical Applications for Organic Artifact Stabilization (Texas A&M University Anthropology Series)
To a given volume of PR- polymer, use a % (by weight) addition of CR- and mix thoroughly. The artifact should then be carefully transferred and totally immersed in the vat of polymer solution. Aluminum mesh or some other mechanism is required to prevent the artifact from ﬂoating during acetone/polymer displacement. Once the artifact is secure in the solution, place the vat into a vacuum chamber. A slight reduction in pressure is suﬃcient to cause small bubbles to ﬂow from the artifact. When slight bubbling occurs, lock oﬀ the vacuum chamber and turn oﬀ the pump.
Basic beaker and gas trap setup with heat lamp and temperature probe added: (A) beaker with wood sample—no oil; (B) vacuum line to gas trap; (C) gas trap mounted in dry ice; (D) container with dry ice; (E) vacuum line to vacuum pump; (F) heat lamp—adjustable height; (G) temperature probe. 00 gassing from the sample was comparable to samples B, C, and D. A lack of media to support the degraded cell structure resulted in greater damage to this section of waterlogged wood. intensity) higher than those recorded for sample D.
There is no hurry to continue treatment on desiccated wood. The artifact can safely drain for several hours and, if necessary, be stored indeﬁnitely in solution until continued treatment can occur. . Before a catalyst is applied, excess bulking agent needs to be removed from the artifact’s surfaces. While many of the polymer solutions are sticky to the touch, they are easily wiped from the wood surfaces using Q-tips or clean cloths. To remove excess amounts of bulking agent from cracks and crevices, the artifact can be wiped with a rag soaked in CR-.