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Water sorption and diffusion in cellulose acetate: The effect of plasticisers

del Gaudio, I; Hunter-Sellars, E; Parkin, IP; Williams, D; Da Ros, S; Curran, K; (2021) Water sorption and diffusion in cellulose acetate: The effect of plasticisers. Carbohydrate Polymers , 267 , Article 118185. 10.1016/j.carbpol.2021.118185. Green open access

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Abstract

The conservation of cellulose acetate plastics in museum collections presents a significant challenge, due to the material's instability. Several studies have led to an understanding of the role of relative humidity (RH) and temperature in the decay process. It is well established that the first decay mechanism in cellulose acetate museum objects is the loss of plasticiser, and that the main decay mechanism of the polymer chain involves hydrolysis reactions. This leads to the loss of sidechain groups and the breakdown of the main polymer backbone. However, interactions between these decay mechanisms, specifically the way in which the loss of plasticiser can modify the interaction between cellulose acetate and water, has not yet been investigated. This research addresses the role of RH, studying the sorption and diffusion of water in cellulose acetate and how this interaction can be affected by plasticiser concentration using Dynamic Vapour Sorption (DVS).

Type: Article
Title: Water sorption and diffusion in cellulose acetate: The effect of plasticisers
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.carbpol.2021.118185
Publisher version: http://dx.doi.org/10.1016/j.carbpol.2021.118185
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Cellulose acetate, Water sorption, Water diffusion, Plasticiser loss
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources
URI: https://discovery.ucl.ac.uk/id/eprint/10127881
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