Full text
| |
| Author(s): |
Thiago do Carmo Rufino
Total Authors: 1
|
| Document type: | Doctoral Thesis |
| Press: | Campinas, SP. |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Instituto de Química |
| Defense date: | 2017-05-24 |
| Examining board members: |
Maria Isabel Felisberti;
Márcia Aparecida da Silva Spinacé;
Walter Ruggeri Waldman;
Paulo de Tarso Vieira e Rosa;
Márcia Cristina Breitkreitz
|
| Advisor: | Maria Isabel Felisberti |
| Abstract | |
Poly(bisphenol A carbonate) (PC) is the second most produced engineering polymer in the world. In addition to its high glass transition temperature and mechanical strength, the PC is processable by several methods and combines transparency and high refractive index. It is therefore used in several industrial sectors, such as aeronautics, automotive, civil construction, and others. In this thesis, the range of PC applications were expanded by introducing it (for the first time!) as a matrix for thermosetting polymer coatings. For this purpose, bifunctional (PC(OH)_2) and polyfunctional (PC(OH)_n) PC oligomers, both hydroxylated, were produced. For PC(OH)_2, an experimental design was carried out, which allowed scaling up from 1.0 g to 1.0 kg with reproducibility. This synthetic route is suitable for PC chemical recycling and provides second generation products with added value. About PC(OH)_n, a synthetic route was proposed for di- and tri-functional monomers from the melt. The oligomers produced in both routes were crosslinked with melamine resins of different degrees of substitution and alkylation. Thus, PC-Melamine thermoset formulations were exploited both in the form of isolated films and in the form of coatings (substrate: automotive bodywork). The properties of these materials are discussed as a function of the formula composition and the chemical structure of the resins. This thesis opens the way for new developments in both thermosetting and polymer coatings, with proven capability for both areas (AU) | |
| FAPESP's process: | 13/21757-2 - Polymeric coatings based on polycarbonate-melamine system |
| Grantee: | Thiago Do Carmo Rufino |
| Support Opportunities: | Scholarships in Brazil - Doctorate |