Self-diagnostic Coatings for Cultural Heritage: Fluorescent additives.- Characterization, Lightfastness and Influence on a Waterborne Coating’s Yellowing and Plasma Removability of Commercial Pigments

DSpace/Manakin Repository

Show simple item record

dc.contributor.advisor Benedetti, Alvise it_IT
dc.contributor.author Rossi, Francesca <1989 ; 820678> it_IT
dc.date.accessioned 2014-10-08 it_IT
dc.date.accessioned 2014-12-13T10:18:10Z
dc.date.available 2016-05-20T11:20:41Z
dc.date.issued 2014-10-31 it_IT
dc.identifier.uri http://hdl.handle.net/10579/5395
dc.description.abstract Main purpose of this thesis is the identification of different types of photoluminescent additives for the formulation of innovative waterborne self-diagnostic protective coatings which could serve in the field of cultural heritage conservation, enabling to monitor the coating’s health status. The research focuses on the characterization of srtucture and photo-oxidative degradation of some commercial fluorescent products; specifically, dispersions of water-insoluble additives (pigments) have been formulated, after having selected and characterized four products. The selected emitting substances have been shown to be BaMgAl10O17:Mn2+Eu2+ and Y2O2S:Eu2+ as inorganic and Eu3+(TTA)3(TPPO)2 (tris(2-thenoyltrifluoroacetonate)-(bis-triphenylphosphinoxide)europium chelate) and HPQ (2-2’hydroxyphenyl-4(3H)-quinazolinone) as organic pigments. In order to assess their performances in relation to the particle’s size, the pigments have also been ground to nanometric sizes with the bead mill technique. In particular, the influence of external conditions on the emission response, such as the inclusion in an acrylic matrix and a prolonged ultraviolet irradiation, has been investigated for three different particle size distributions. Also the influence of the additives on the photo-oxidative degradation and plasma removability of an acrylic coating have been evaluated. The research is part of the European project PANNA (Plasma and Nano for New Age soft conservation), therefore the removability tests have been carried out by means of a portable atmospheric cold plasma torch developed in the frame of the project. The obtained results and their chemical and physical differences allow one to declare the two organic samples as complementary fluorescent additives, combinable and suitable for various applications in the field of conservation dedicated coatings. it_IT
dc.language.iso en it_IT
dc.publisher Università Ca' Foscari Venezia it_IT
dc.rights © Francesca Rossi, 2014 it_IT
dc.title Self-diagnostic Coatings for Cultural Heritage: Fluorescent additives.- Characterization, Lightfastness and Influence on a Waterborne Coating’s Yellowing and Plasma Removability of Commercial Pigments it_IT
dc.title.alternative it_IT
dc.type Bachelor Thesis it_IT
dc.degree.name Scienze e tecnologie dei bio e nanomateriali it_IT
dc.degree.level Laurea magistrale it_IT
dc.degree.grantor Dipartimento di Scienze Molecolari e Nanosistemi it_IT
dc.description.academicyear 2013/2014, sessione autunnale it_IT
dc.rights.accessrights openAccess it_IT
dc.thesis.matricno 820678 it_IT
dc.subject.miur ING-IND/22 SCIENZA E TECNOLOGIA DEI MATERIALI it_IT
dc.description.note it_IT
dc.degree.discipline it_IT
dc.contributor.co-advisor it_IT
dc.provenance.upload Francesca Rossi (820678@stud.unive.it), 2014-10-08 it_IT
dc.provenance.plagiarycheck Alvise Benedetti (benedett@unive.it), 2014-10-20 it_IT


Files in this item

This item appears in the following Collection(s)

Show simple item record