Search results for "Klucel"
showing 2 items of 2 documents
A methodological approach in the evaluation of the efficacy of treatments for the dimensional stabilisation of waterlogged archaeological wood
2010
Abstract The aim of the work is to set up a methodological approach to verify the effectiveness of the treatments of decayed waterlogged archaeological wood and to point out the proper thermo-hygrometric conditions for its preservation after treatment. The treatments were performed on wood samples of maritime pine (Pinus pinaster Aiton), oak (Quercus sp. caducifolia), elm (Ulmus cf. minor) and strawberry tree (Arbutus unedo L.), obtained from stems pertaining to the original vegetation found in the excavation site of the Ancient Ships in Pisa (Italy), and dated from seventh century BC to second century AD The utilised products were: Polyethylene Glycols (PEG) of various molecular weights, a…
Preliminary 1H NMR studyon waterlogged wood strengthened with Klucel
2004
Waterlogged woods from sea or lakes are very fragile because chemical, physical and biological decay. Wood artefacts, if directly dried in air, risk a structurally collapse and loss original form and dimension. The progressive substitution of water with suitable strengthening materials can preserve the characteristic of the wood finds. Among various natural and synthetic polymers suitable for this porpoise we have chosen aqueous solutions of Klucel (hydroxypropylcellulose), a polymer obtained from etherification of cellulose. This compound can interact with all the components of the wooden structure (cellulose, hemicellulose and lignin) and can cover the cavities by a protective and stabili…