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

Carbohydrate Polymers
Isabella Del GaudioKatherine Curran

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 a major 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).

References

Nov 2, 2005·Journal of Colloid and Interface Science·Thomas KarbowiakAndrée Voilley
Apr 26, 2007·Critical Reviews in Food Science and Nutrition·Jong-Whan Rhim, Perry K W Ng
May 31, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Stefano FarrisLuciano Piergiovanni
Dec 21, 2014·International Journal of Pharmaceutics·Ahmad S BarhamAnne Marie Healy
Jun 7, 2017·Journal of Pharmacy & Bioallied Sciences·Ravikiran AlladaPraveen Chappa
Apr 18, 2020·Carbohydrate Polymers·Saeid RajabnezhadAli Nokhodchi

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