37147
Accession Number
39145
Author
Troiano, Federica;Vicini, Silvia;Gioventu, Eleonora;Lorenzi, Paola F.;Improta, Cristina M.;Cappitelli, Francesca
Title Of Article Chaper
A methodology to select bacteria able to remove synthetic polymers
Title Of Journal Book
Polymer Degradation and Stability
Volume
107
Pages
321-327
Collation
7 p. : ills.
Reference Bibliography
Includes bibliographic references
Language Of Text
English
Literature Type
Serial
Literature Level
Analytic
Abstract
Synthetic polymers have often been used for the protection and consolidation of cultural heritage. Although it was generally thought that synthetic polymers were not susceptible to deterioration, there are now many papers in the scientific literature demonstrating the opposite. The degradation of synthetic polymers can be due to chemical, physical and biological factors. At present, the traditional way for removing a degraded synthetic polymer is the use of mixtures of solvents that pose some health risks. This work proposes a method to select bacteria able to remove synthetic polymers from cultural heritage surfaces. The ability of five bacteria to attack Paraloid B72, the most commonly used polymer in conservation treatments, was evaluated by optical and scanning electron microscopy observations, weight loss measurements, Fourier transform infrared spectroscopy and differential scanning calorimetric analysis. Although none of the bacteria were able to attack Paraloid B72, the methodology developed can be applied to select other bacteria with this ability. Therefore the results offer insightful guidance to a better design of bioremoval experiments of synthetic resins used in conservation.
Keywords
biocleaning;synthetic;polymer;paraloid;microbial;degradation
pub_id
37147