Consolidation of Black-dyed Māori Textile Artefacts: Evaluating the Efficacy of Sodium Alginate

Smith, Catherine A.; Paterson, Rachel A.; Lowe, Bronwyn; Kanawa, Rangi Te

doi:10.1080/00393630.2016.1266150

Cited by 6 publications

(4 citation statements)

References 17 publications

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“…Embrittlement is considered one of the most common signs of deterioration for dyed and non-dyed paper manuscript collections caused by factors that lead to the weakness of these manuscripts 14 . There are more reasons that lead to the embrittlement of paper, specially dyed with sensitive natural dyes.…”

Section: Introductionmentioning

confidence: 99%

Potential effects of nano-cellulose and nano-silica/polyvinyl alcohol nanocomposites in the strengthening of dyed paper manuscripts with madder: an experimental study

Abdel-Hamied

Hassan

Salem

et al. 2022

Sci Rep

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In the present work, the composite cross-linked were used to consolidate the dyed paper manuscripts. Nanocomposites of mesoporous silica nanoparticle (MPSNP)/polyvinyl alcohol (PVA) and cellulose nanofiber (CNF)/PVA, which have never been used before, have been evaluated for the consolidation process of the dyed paper manuscripts with madder extract. Three concentrations 1%, 3%, and 5% have been prepared. Analysis and investigation methods like scanning electron microscope (SEM), transmission electron microscope (TEM), dynamic light scattering analysis (DLS), X-Ray diffraction Analysis (XRD), atomic force microscope (AFM), Fourier transform infrared spectroscopy (FTIR) and total color difference (ΔE) by spectrophotometer have been used in order to characterize the prepared nano-sized composites and evaluate the treated dyed paper samples before and after the aging process. The results of surface morphology by SEM revealed the effectiveness of MPSNP/PVA core–shell nanocomposite at 5% in the consolidation process, where the improvement of properties of the aged dyed paper samples. The fibers of the treated paper became strong and appeared clearly. The result of ΔE measurements showed that the treated sample with MPSNP/PVA nanocomposite at 5% gave the lowest ΔE (5.22), while, the treated sample with CNF/PVA nanocomposite at 5% gave the highest ΔE value (11.66). Mechanical measurements (tensile strength and elongation) revealed the efficiency of MPSNP/PVA nanocomposite at 5% in the treatment of the aged dyed paper samples. The treated sample with the mentioned material gave tensile strength and elongation values of 84.8 N/nm2 and 1.736%, respectively. In contrast, the treated sample with CNF/PVA nanocomposite at 1% gave the lowest tensile strength and elongation values 38.2 N/nm2, and 1.166%, respectively. FTIR analysis revealed an increase was noticed in the CH2 stretching band (refers to the crystallinity of cellulose), where the intensity of the treated sample with MPSNP/PVA nanocomposite was at a 5% increase compared to the control sample. The FTIR results supported the results of mechanical measurements. The intensity of the CH2 stretching band, which refers to the crystallinity index of cellulose, was increased with the use of MPSNP/PVA nanocomposite at 3% and 5%, which explains the improvement in mechanical properties. This may be due to the nano-mineral particles, which improve the mechanical properties. Additionally, they reduce the effect of accelerated thermal aging on the cellulosic fibers and give them stability. The detailed analysis of analytical methods used for evaluation revealed the novelty of MPSNP/PVA nanocomposite, especially at 5%. It has a potential role in strengthening and improving different properties of the dyed paper manuscripts with madder extract.

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Section: Introductionmentioning

confidence: 99%

Potential effects of nano-cellulose and nano-silica/polyvinyl alcohol nanocomposites in the strengthening of dyed paper manuscripts with madder: an experimental study

Abdel-Hamied

Hassan

Salem

et al. 2022

Sci Rep

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“…The process of artificial silk weighting in the late 19th and early 20th centuries can cause rotting and weakening of textile fibres, leading to breakage over time [ 9 ]. Additionally, metal salts based on iron used as a dye fixative (mordant) to give a rich dense black colour can deteriorate fibres [ 9 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Revealing the Origin: The Secrets of Textile Fragments Hidden Inside the 19th Century Chasuble from Dubrovnik

Jemo

Parac-Osterman

2021

Materials

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This paper presents the analysis carried out during the textile conservation–restoration process with the goal to reveal the secrets of textile fragments hidden inside the 19th century chasuble from Dubrovnik. The discovered textile fragments were investigated by modern instrumental methods and compared with the original textile from the 19th century set of liturgical vestments, which the chasuble belongs to. In addition, all other old repairs and treatments on the chasuble that had significant impact on the historic textile over time were investigated and assessed. The polymer type of the fibres was established by microscopic examination and infrared (ATR FT-IR) spectroscopy. A comparison of type of fibres and textile construction parameters, both from fragments and from the original textile, was carried out in order to determine their possible associations. Based on UV-Vis and HPLC identification of chemical composition of dyes in extracts from textile fibres, both from textile fragments, old repairs and authentic historic textile, it was possible to designate some common characteristics of dyes as important factors in determining its authenticity.

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“…There is sufficient literature (Best 1898, Buck 1926, Mead 1969, Blackman 1998, Clavir 2003, Daniels 1999, Evans 1999, Hakiwai 2005, Harwood 2011, Henare 2005, McCarthy 2011, Pendergrast 1988, Sully 2007, Roth 1923, Royal 2009, Schorch 2016, Smith 2018, Te Kanawa 2005, Tamarapa 2011, Whiting in Sully 2007 available in the fields of Māori studies, anthropology, museum and heritage studies, conservation and heritage materials science to assist this research. This section briefly surveys some of this literature and identifies a large gap in terms of reconnecting taonga kākahu to iwi through the customary knowledge of dyeing textiles using iron-tannate.…”

Section: Literature Review and Research Contextmentioning

confidence: 99%

“…The flexibility of the consolidated fibres was compromised, and the outcome was that the fibres were bound together and retained within the woven matrix of the textile. This consolidation treatment has been evaluated alongside four other consolidates, and the work was published by the International Institute for Conservation of Historic and Artistic Works in the journal Studies in Conservation(Smith 2018). The poor condition of these artefacts challenges their custodians.…”

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confidence: 99%

Mana Taonga Kākahu: Exploring Approaches to Reconnecting Taonga Kākahu to Tangatawhenua

Kanawa¹

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The current mission of museums in Aotearoa New Zealand is to reconnect taonga (treasured artefacts) to their tribal descendants, but in most cases, there is no provenance, and many Māori remain alienated from their cultural heritage. Taonga kākahu (treasured textiles) from the pre-European and contact period retain mātauranga Māori (ancestral knowledge), materialise links to Te Ao Māori (the Māori world), whakapapa (genealogy) and reflect a sustainable relationship with Te Taiao (nature). They are the product of intricate weaving skills in the procurement, preparation, and construction of natural materials, including the dying of harakeke fibre (NZ flax) with paru (iron rich mud). The main research question therefore is: How and why should taonga kākahu in museum collections be reconnected with tangata whenua? This thesis used a range of interdisciplinary qualitative and quantitative methods, including field work, scientific applications such as colour measurements, technical analysis of cloaks and practical weaving samples. Iron rich mud samples were gathered from different geographical locations spread around the North Island and one in the South Island and processed with several tannins that were each scientifically measured for their hue of black. Experimental archaeology produced new insights and interpretations of three case study taonga kākahu. The research aims to revitalize customary techniques and knowledge of dying and weaving, support conservation and display of Māori textiles, and enhance the mana and understanding of these precious taonga. The data gathered through this research supports the preservation of the fragile dyed black fibre, contributes to the decolonisation of conservation, advocates for greater community access to collections, and argues for enhanced museum display of cloaks through new interpretation of designs. The research has identified material composition and some unique characteristics in the construction of taonga kākahu which explores ways of reconnecting unprovenanced taonga to tangata whenua.

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Consolidation of Black-dyed Māori Textile Artefacts: Evaluating the Efficacy of Sodium Alginate

Cited by 6 publications

References 17 publications

Potential effects of nano-cellulose and nano-silica/polyvinyl alcohol nanocomposites in the strengthening of dyed paper manuscripts with madder: an experimental study

Potential effects of nano-cellulose and nano-silica/polyvinyl alcohol nanocomposites in the strengthening of dyed paper manuscripts with madder: an experimental study

Revealing the Origin: The Secrets of Textile Fragments Hidden Inside the 19th Century Chasuble from Dubrovnik

Mana Taonga Kākahu: Exploring Approaches to Reconnecting Taonga Kākahu to Tangatawhenua

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