Controlled Environment Neutron Radiography of Moisture Sorption/Desorption in Nanocellulose-Treated Cotton Painting Canvases
نویسندگان
چکیده
Nanocellulose-based materials have recently been used to consolidate degraded cotton painting canvases. Canvas-supported paintings consist of that are sensitive to moisture and especially susceptible environmental fluctuations in temperature and relative humidity (RH). These occur in uncontrolled environments found historic houses and palaces and can lead hydrolytic degradation mechanical damage canvases. To simulate this situation an experimental setting, canvas samples were mounted a custom-made closed-cell subjected to programmed cycles RH at controlled while exposed to the neutron beam. Results presented for both untreated samples and those treated with polar consolidant, cellulose nanofibrils (CNF(aq)) water, apolar composite of persilylated methyl surface silylated nanocrystals (MC+CNC(h)) heptane. They were then compared changes ionic conductivities as measured by dielectric analysis (DEA) same cyclic program temperature. Although samples exposed conditions, they treatment-specific responses. CNF-treated showed higher hygroscopicity than sample and facilitated diffusion across areas not environment. A MC+CNC(h) retarded during increase could, therefore, afford protection absorption uncontrolled environments. Thus, setup resulting data provide pilot study demonstrating potential neutron radiography following comparing real-time dynamics nanocellulose-consolidated cotton canvases assisting validating overall benefit treatment
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ژورنال
عنوان ژورنال: ACS applied polymer materials
سال: 2021
ISSN: ['2637-6105']
DOI: https://doi.org/10.1021/acsapm.0c01073