Richardson, E; Giachet, MT; Schilling, M; Learner, T; (2014) Assessing the physical stability of archival cellulose acetate films by monitoring plasticizer loss. POLYMER DEGRADATION AND STABILITY , 107 231 - 236. 10.1016/j.polymdegradstab.2013.12.001.

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Abstract

Cellulose acetate film plasticized with diethyl phthalate was subjected to artificial aging regimes and the loss of plasticizer determined by means of Thermogravimetric Analysis and Fourier-transform Infrared Spectroscopy. Alterations in the strain hardening capability of the films was monitored by Dynamic Mechanical Analysis, and the connection between flexibility, strain hardening and the degree of plasticization investigated as a means of monitoring the physical condition of archival cellulose acetate film. It was found that the higher the plasticizer content the greater the ability to strain harden, and therefore the least vulnerable to mechanical damage from archival handling. The correlation between the critical plasticizer content and the working properties of cellulose acetate film provides a means of assessing stability, and highlights artifacts at risk from physical damage.

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