ABSTRACT

This article reports testing of the efficacy of five consolidants (sodium alginate, zinc alginate, Paraloid® B-72, TRI-Funori™, Methocel® A4C) used by conservators for consolidation. The consolidants were tested for potential use on deteriorated black-dyed plant fibres, specifically paru-dyed muka (iron-tannate dyed fibre from harakeke; New Zealand flax, Phormium tenax), building on previous experimental work. Paru-dyed test fibres were pre-aged (light, with UV) to simulate museum artefacts, and then consolidated, after which their colour stability, strength retention, and acidity were measured. Consolidated test fibres were then artificially light-aged (UV-filtered) to test the stability of the consolidants over time (10 MLux hours; UV-filtered light), with colour stability, strength retention, and acidity re-measured after this ageing stage. A full factorial experimental design with four factors was used for testing: dye type, consolidant type, consolidant concentration, and accelerated light-ageing. Data were analysed using generalised linear models (GLM) coupled with analysis of variance (ANOVA) and simple effects procedures to test for interactions between factors and determine significant differences. Overall, this study found that using criteria of pH, strength, colour stability, and visual properties, that 0.5% w/v Methocel® A4C™ in H₂O and TRI-Funori™ 0.5% w/v in H₂O were recommended for further exploration for use on deteriorated paru-dyed muka.

摘要

本文报告了对五种固结剂（海藻酸钠、海藻酸锌、Paraloid® B-72、TRI-Funori™、Methocel® A4C）用于固结的测试。对这些固结剂进行了测试，可用于变质的黑色染色植物纤维，特别是 paru 染色的木卡（来自 harakeke 的单宁酸铁染色纤维；新西兰亚麻，Phormium tenax)，建立在以前的实验工作的基础上。Paru 染色的测试纤维经过预老化（光，用紫外线）模拟博物馆文物，然后固结，然后测量它们的颜色稳定性、强度保持率和酸度。然后对固结的测试纤维进行人工光老化（UV 过滤），以测试固结物随时间的稳定性（10 MLux 小时；UV 过滤光），在此老化阶段后重新测量颜色稳定性、强度保持率和酸度. 使用具有四个因素的全因子实验设计进行测试：染料类型、固结物类型、固结物浓度和加速光老化。使用广义线性模型 (GLM) 结合方差分析 (ANOVA) 和简单效应程序对数据进行分析，以测试因素之间的相互作用并确定显着差异。₂ O 和 TRI-Funori™ 0.5% w/v 在 H ₂ O 中被推荐用于进一步探索用于劣化的帕鲁染色木卡。