Rheoreversible polymeric organogels: the art of science for art conservation

Langmuir : the ACS Journal of Surfaces and Colloids
Emiliano CarrettiRichard G Weiss

Abstract

A new category of gels where gelification and breaking of the gels are chemically induced is presented. In particular, the latent gellant polyallylamine produced stable gels with some organic solvents after reaction with CO2 at room temperature, giving the gellant polyallylammonium carbamate. The rheological behavior switches from solution-type to gel-type. After weak acid-catalyzed displacement of CO2, the gel character disappears in a few seconds, making these polymeric organogels rheoreversible by a simple chemical action. This "intelligent" chemical switch between solution-type and gel-type rheological behavior has been exploited to clean pictorial surfaces in art conservation. In fact, during the cleaning procedure, there is a need for the gel supporting the cleaning solvent to have a very high viscosity. After cleaning has been successful, there is a strong necessity to reduce the viscosity, to better eliminate traces of the gellant that must be completely removed from the work of art. In the present study, we show that the art of science, in the sense of designing new physicochemical systems exploiting the "science palette", can lead to an improvement in the techniques used to protect and conserve the results of the "art...Continue Reading

References

Jul 17, 1998·Science·W A PetkaD A Tirrell
Apr 24, 1999·Science·C A MorrisD R Rolison
Jul 18, 2001·Journal of the American Chemical Society·C LiuZ J Zhang
Oct 18, 2001·Journal of the American Chemical Society·M George, R G Weiss
Feb 20, 2002·Chemical Reviews·Pierre Terech, Richard G. Weiss
Jul 13, 2002·Journal of Pharmaceutical Sciences·Santiago PalmaPierandrea Lo Nostro
Apr 3, 2003·Journal of the American Chemical Society·Kurikka V P M ShafiMin-Hui Cui
Apr 24, 2003·Journal of the American Chemical Society·Emiliano CarrettiRichard G Weiss

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Citations

Jun 30, 2011·Chemical Communications : Chem Comm·Daisuke NagaiHiroyuki Takeno
Nov 10, 2013·Advances in Colloid and Interface Science·Piero BaglioniRodorico Giorgi
Jul 16, 2005·Organic Letters·Heng Xu, Dmitry M Rudkevich
Sep 24, 2004·Nature·David Erhardt
Feb 26, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Piero BaglioniGiovanna Poggi
Apr 27, 2010·Chemical Society Reviews·Tao YuRichard G Weiss
Jun 1, 2013·Macromolecular Rapid Communications·Shaojian Lin, Patrick Theato
Oct 26, 2011·Nanoscale·Michele BaglioniPiero Baglioni
May 20, 2016·The Journal of Physical Chemistry. B·Balachandran VivekEdamana Prasad
May 21, 2009·Langmuir : the ACS Journal of Surfaces and Colloids·Piero BaglioniRodorico Giorgi
Jan 6, 2010·Langmuir : the ACS Journal of Surfaces and Colloids·Emiliano CarrettiLuigi Dei
Apr 15, 2010·Accounts of Chemical Research·Emiliano CarrettiRichard G Weiss

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