Download PDF

Weichmacherverlust bei PVC-Objekten von Joseph Beuys – Versuche zu kurativen und konservatorischen Massnahmen
ANHANG III: ZUSAMMENSTELLUNG VON ABSTRACTS
two step process: (1) soaking in a liquid and (2) drying at various temperatures. Some process parameters, such as
time axnd temperature of soaking, temperature and time of drying, influence the treatment efficacy. The best values
consider in from these factors were found due to experimental designs and the physical significance of the results is
discussed.
© 2003 Society of Chemical Industry
Fugit, Jean-Luc; Taverdet, Jean-Louis (2001): Decreasing pollution of plasticized PVC packaging: A
comparison of three plastic treatments. In: Journal of Applied Polymer Science, Volume 80, Issue 10, Date:
16 June 2001, S. 1841-1847
This study proposed three different treatments of plasticized PVC, which decreases diffusion of the plasticizer when
the plastic is in contact with a liquid food or simulated liquid food. The treated PVCs were tested under the same
operating conditions, and their efficiency was able to be assessed thanks to a diffusion model previously described. It
was shown that the time and the temperature of the storage of the treated PVCs influenced the effectiveness of the
treatment. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 80: 1841-1847, 2001
Bichara, Ali; Fugit, Jean-Luc; Ouillon, Isabelle; Taverdet, Jean-Louis (1999): Optimization of a process capable
of decreasing the pollution from PVC packaging material. In: Journal of Applied Polymer Science, Volume
74, Issue 14, Date: 27 December 1999, S. 3492-3500
This work is the study of a process capable of decreasing the migration of the plasticizer into a liquid food or a
simulant from a plasticized PVC packaging. The treatment is a two-step process: (1) soaking in a liquid, and (2)
drying at various temperatures. The efficiency of this method depends on many factors: nature of the liquid and
immersion time, temperature and time of drying, etc. The influence of the most important of them had been
quantified with a mathematical model previously described. The purpose of this study is to search for the best value
of each parameter and, therefore, to optimize the reduction of mass transfers.
Bichara, Ali; Fugit, Jean-Luc; Taverdet, Jean-Louis (1999): Modeling of mass transfers between food
simulants and treated plasticized PVC. In: Journal of Applied Polymer Science, Volume 72, Issue 1, Date: 4
April 1999, S. 49-58
(...) This study concerns mass transfers between plasticized PVC, having been subjected to a treatment, and liquid
food or food simulants. The treatment reduces the diffusion of the plasticizer and the influence of some factors of this
processing are investigated. A mathematical model, able to simulate these mass transfers and to quantify the
treatment parameters, is proposed.
Taverdet, J. L.; Vergnaud, J. M. (1986): Preparation of plasticized PVC samples with very low matter
transfers. In: European Polymer Journal, Volume 22, Issue 12 , 1986, S. 959-962
Plasticized PVC is very often used for packaging for liquid foods or blood and blood components. Two simultaneous
matter transfers may take place, one concerned with the liquid entering the PVC, and the other with the plasticizer
leaving the PVC. Both transfers are controlled by diffusion in transient conditions with concentration-dependent
diffusivities. By using information obtained on the profiles of concentration of both these liquids developed through a
PVC sheet during the process and with the help of a model based on an explicit numerical analysis with finite
differences, we have developed a method of preparation of plasticized PVC sample with very low matter transfers.
The principle of this method is as follows: after soaking the sample in a liquid for a definite short time, the sample is
extracted and the liquid is evaporated. The concentration of the plasticizer is high within the PVC, but very low on the
surface; the sample is therefore not permeable to liquids.