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Previous issue date: 2017-04-24 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Muito se pesquisa hoje sobre fontes renov?veis de energia e materiais sustent?veis, visando diminuir os impactos causados no ambiente. Rejeitos de materiais que antigamente tinham como destino o lixo, atualmente s?o vistos de outra forma. O presente trabalho teve por objetivo confeccionar um material geot?xtil utilizando folhas de bananeira, em particular, a fibra extra?da do caule da folha de bananeira que ? reconhecida atualmente como uma das mais fortes fibras celul?sicas. Como matriz desse geot?xtil natural, utilizou-se o l?tex e, posteriormente, foram analisadas as aplica??es para o geot?xtil mediante caracteriza??o do material pr?via baseada na literatura. Os corpos de prova foram tecidos e revestidos em l?tex e em seguida, foi realizada verifica??o e an?lise das principais propriedades f?sico-qu?micas, mec?nicas e t?rmicas. Tais propriedades foram obtidas atrav?s de testes como: Resist?ncia ? tra??o, Flamabilidade, Termogravimetria, Absor??o de ?gua e de umidade, Envelhecimento por ciclo e por umidade, Fric??o, Densidade Linear, Gramatura, Biodegrada??o e degrada??o ambiental e Condutividade T?rmica. Com base nos resultados das an?lises, foi poss?vel concluir que o geot?xtil pode ser utilizado como revestimento para superf?cies, pois al?m de resistente ? tra??o mesmo quando aquecido, o geot?xtil apresentou baixa condutividade t?rmica (0,241W/mK), fato que o torna isolante t?rmico. Foi ainda conclu?do que o comp?sito natural conseguiu aliar as propriedades de resist?ncia t?rmica e mec?nica da fibra da bananeira com o alongamento do elast?mero, l?tex. Tal resultado n?o comprometeu a higroscopicidade da fibra. P?de-se concluir finalmente que o material ? sustent?vel, n?o agride o meio ambiente e cumpre a fun??o esperada. / A lot is being researched nowadays about renewable sources of energy and sustainable materials that aim to decrease the impact caused on the environment. Materials rejected that once had the trash as destination, currently are seen in another way. This present paper had as purpose the confection of a geotextile using banana tree leaves, in particular, fibers extracted from the stem of the banana tree leaves, which presently, are recognized as one of the strongest cellulosic fibers. As a natural geotextile matrix, latex was used and, subsequently, possible applications for the geotextile were analysed through previous material characterization based on literature. Samples were weaved and coated in latex, and, soon after, a verification and analyses of physical, chemical, mechanical and thermal properties were made. Such properties were obtained throughout tests like: Tensile Strength, Flammability, Analysis Thermogravimetric (TG), Water and Humidity Absorption, Aging by Cycle and by Water, Abrasion, Linear Density, Grammage, Biodegradation, Environmental Degradation and Thermal Conductivity. According to the analysis results, it was possible to conclude that the geotextile can be used as surfaces coating, because beside being high tensile strength, even heated, the goetextile presented a low thermal conductivity (0,214W/mK). That fact means that the material is a thermal insulator. Also, it was conclude that the natural composite acquire the properties such as thermal and mechanical strength from the banana tree fibers combined with the elongation from thermoplastic elastomer latex. Such result did not compromise the hygroscopicity of the fiber. Finally, it could be concluded that the material is sustainable, does not damage the environment and fulfil the coating function, a characteristic expected.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/23952 |
| Date | 24 April 2017 |
| Creators | Souza, Clara Silvestre de |
| Contributors | 12391085400, http://lattes.cnpq.br/7103009428184656, Ford, Elmo Thiago Lins Couras, 05237288405, http://lattes.cnpq.br/2683581273085136, Ribeiro, Fernanda Alves, 00880308494, http://lattes.cnpq.br/0117907183197239, Melo, Mois?s Vieira de, 10774556404, http://lattes.cnpq.br/1337846419129004, Santos, Natanaeyfle Randemberg Gomes dos, 03047568499, http://lattes.cnpq.br/0174046631340409, Mendes, Jos? Ubiragi de Lima |
| Publisher | PROGRAMA DE P?S-GRADUA??O EM ENGENHARIA MEC?NICA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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