Comparative Hydrodynamic Study on Non-Aqueous Soluble Archaeological Wood Consolidants: Butvar B-98 and PDMS-OH Siloxanes

Cutajar, Michelle; Stockman, Robert A.; Braovac, Susan; Steindal, Calin Constantin; Zisi, Angeliki; Harding, Stephen E.

doi:10.3390/molecules27072133

Cited by 3 publications

(1 citation statement)

References 31 publications

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“…Analytical ultracentrifugation (AUC) was used to characterise the size distribution and molar mass of both polymers, as it has proven to be a robust and highly accurate technique to study polymers 31 , 32 . Moreover, it has recently been used in the study and characterisation of existing and potential wood consolidants 10 , 15 , 33 – 36 . Being an absolute method it does not require a calibration standard 37 .…”

Section: Introductionmentioning

confidence: 99%

Comparative hydrodynamic characterisation of two hydroxylated polymers based on α-pinene- or oleic acid-derived monomers for potential use as archaeological consolidants

Cutajar

Machado

Crucitti

et al. 2022

Sci Rep

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The Oseberg Viking ship burial is one of the most extensive collections of Viking wooden artefacts ever excavated in Norway. In the early twentieth century, many of these artefacts were treated with alum in order to preserve them, inadvertently leading to their current degraded state. It is therefore crucial to develop new bioinspired polymers which could be used to conserve these artefacts and prevent further disintegration. Two hydroxylated polymers were synthesised (TPA6 and TPA7), using α-pinene- and oleic acid-derived monomers functionalised with an acrylate moiety. Characterisation using biomolecular hydrodynamics (analytical ultracentrifugation and high precision viscometry) has shown that these polymers have properties which would potentially make them good wood consolidants. Conformation analyses with the viscosity increment (ν) universal hydrodynamic parameter and ELLIPS1 software showed that both polymers had extended conformations, facilitating in situ networking when applied to wood. SEDFIT-MSTAR analyses of sedimentation equilibrium data indicates a weight average molar mass Mw of (3.9 ± 0.8) kDa and (4.2 ± 0.2) kDa for TPA6 and TPA7 respectively. Analyses with SEDFIT (sedimentation velocity) and MultiSig however revealed that TPA7 had a much greater homogeneity and a lower proportion of aggregation. These studies suggest that both these polymers—particularly TPA7—have characteristics suitable for wood consolidation, such as an optimal molar mass, conformation and a hydroxylated nature, making them interesting leads for further research.

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Section: Introductionmentioning

confidence: 99%

Comparative hydrodynamic characterisation of two hydroxylated polymers based on α-pinene- or oleic acid-derived monomers for potential use as archaeological consolidants

Cutajar

Machado

Crucitti

et al. 2022

Sci Rep

Self Cite

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Biophysical Reviews’ “meet the editors series”—a profile of Steve Harding’s career in macromolecular hydrodynamics

Harding

2022

Biophys Rev

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Preparation of environment-friendly SiO2 aerogel based on waste boron mud and its adsorption behavior for toluene

Liu

Zhang

Bai

et al. 2023

Water Science and Technology

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To mitigate the environmental hazards of boron mud waste accumulation, we prepared environmental-friendly SiO2 aerogels by extracting them through alkaline leaching treatment and optimized the experimental conditions. The optimum process parameters for alkaline leaching solution NaOH concentration, leaching temperature, solid-to-liquid ratio, and leaching time were 2 mol/L, 95 °C, 1:4, and 3 h, respectively. In this work, cheap and non-toxic hydroxy silicone oil (PDMS–OH) and hydrogen-containing silicone oil (PMHS) were used as surface modifiers instead of toxic and expensive trimethylchlorosilane (TMCS) in the SiO2 aerogel modification process. The best performance under the optimum conditions was achieved with 60% PDMS–OH-modified SiO2 aerogel. Organic liquid spills, represented by toluene, pose a great danger to the environment and water bodies. We treated free toluene on the water surface with the aerogel mentioned above and its adsorption capacity was up to 2,655 mg/g. After the adsorption of toluene, the aerogels coalesced into agglomerates for subsequent collection and handling. Furthermore, after five repeated applications, the adsorption capacity remained at 91.43% of the initial application. Overall, this research provided an inexpensive and simple solution for the treatment of organic liquids in wastewater.

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Comparative Hydrodynamic Study on Non-Aqueous Soluble Archaeological Wood Consolidants: Butvar B-98 and PDMS-OH Siloxanes

Cited by 3 publications

References 31 publications

Comparative hydrodynamic characterisation of two hydroxylated polymers based on α-pinene- or oleic acid-derived monomers for potential use as archaeological consolidants

Comparative hydrodynamic characterisation of two hydroxylated polymers based on α-pinene- or oleic acid-derived monomers for potential use as archaeological consolidants

Biophysical Reviews’ “meet the editors series”—a profile of Steve Harding’s career in macromolecular hydrodynamics

Preparation of environment-friendly SiO2 aerogel based on waste boron mud and its adsorption behavior for toluene

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