Tingimentos de malhas de algodão cationizadas com 3-cloro-2-hidroxipropiltrimetilamônio (CHTAC)
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Tipo de produção
Dissertação
Data
2018
Autores
Brizido, V. Z.
Orientador
Tôrres, Ricardo Belchior
Periódico
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Citação
BRIZIDO, V. Z. Tingimentos de malhas de algodão cationizadas com 3-cloro-2-hidroxipropiltrimetilamônio (CHTAC). 2018. 91 f. Dissertação (Mestrado em Engenharia Química) - Centro Universitário FEI, São Bernardo do Campo, 2018. Disponível em: . Acesso em: 11 fev. 2019.
Texto completo (DOI)
Palavras-chave
Algodão,Corantes e tingimento,Cationização do algodão,Corantes reativos
Resumo
O uso do algodão cationizado é uma das vias mais sustentáveis no processo de tingimento com corantes aniônicos, como os corantes reativos. Possibilitando o tingir a fibra sem eletrólito e ter um esgotamento dos corantes melhor. Além disso, se economiza água, energia e produtos químicos com melhores resultados nos custos e nos efluentes líquidos. Diversos sistema de cationização surgiram nas últimas décadas, um dos produtos estudados é o cloreto de 3-cloro-2-hidroxipropiltrimetilamônio (CHTAC). Alguns artigos foram publicados sobre este produto, sobre sua efetividade, problemas e paradigmas do processo. Esse trabalho tem como objetivo adaptar os estudos laboratoriais dos artigos à realidade das tinturarias e lavanderias do Brasil, em sua maioria, elas trabalham por esgotamento desenvolvendo umas enormes variedades de cores, desde as muito claras ao preto. Os corantes selecionados também são representativos na indústria têxtil brasileira. No presente estudo, foram feitos três tipos de aplicação de CHTAC em malha de algodão de variedade plantada no Brasil, ajustando cada aplicação para uma intensidade de cor, separando-se, desde modo, as cores claras, médias e escuras. Os corantes selecionados foram aplicados em diferentes concentrações e analisados quanto à qualidade dos tingimentos e à economia resultante. Foi observado um ganho expressivo no uso de insumos nos tingimentos das malhas de algodão cationizado. A qualidade dos tingimentos expressa pelas características de uniformidade (igualização) da cor e de solidez se mostrou igual ou melhor, quando comparada aos tingimentos tradicionais com reativos.
The use of cationized cotton is one of the most sustainable procedures for dyeing with anionic dyes, such as reactive dyes. This leaves the possibility of dyeing the fiber without the electrolyte and having a better dye depletion. In addition, water, energy and chemicals are saved as a positive consequence of costs and effluents. Several cationization systems have emerged in recent decades, and one of the products studied is 3-chloro-2-hydroxypropyl trimethylammonium chloride (CHTAC). Some articles have been published about this product, about its effectiveness, problems and paradigms of the process. In the present work, we intend to adapt the laboratory studies of the articles to the reality of the dry cleaners and laundries of Brazil, where in the majority work by exhaustion developing a huge variety of colors, very clear to black. The selected dyes are also the most representative in the textile industry in Brazil. Three types of CHTAC application were made in cotton mesh of planted species in Brazil, adjusting each application to a color intensity, thus separating the light, medium and dark colors. The selected dyes were applied in different concentrations and analyzed for the quality of the dyeings and the resulting economy. It was verified a significant economic gain in the dyeings of cationized cotton meshes. The quality of the dyeings expressed by the characteristics of uniformity (equalization) of color and fastness was shown to be equal to or better compared to traditional dyeing with reactives.
The use of cationized cotton is one of the most sustainable procedures for dyeing with anionic dyes, such as reactive dyes. This leaves the possibility of dyeing the fiber without the electrolyte and having a better dye depletion. In addition, water, energy and chemicals are saved as a positive consequence of costs and effluents. Several cationization systems have emerged in recent decades, and one of the products studied is 3-chloro-2-hydroxypropyl trimethylammonium chloride (CHTAC). Some articles have been published about this product, about its effectiveness, problems and paradigms of the process. In the present work, we intend to adapt the laboratory studies of the articles to the reality of the dry cleaners and laundries of Brazil, where in the majority work by exhaustion developing a huge variety of colors, very clear to black. The selected dyes are also the most representative in the textile industry in Brazil. Three types of CHTAC application were made in cotton mesh of planted species in Brazil, adjusting each application to a color intensity, thus separating the light, medium and dark colors. The selected dyes were applied in different concentrations and analyzed for the quality of the dyeings and the resulting economy. It was verified a significant economic gain in the dyeings of cationized cotton meshes. The quality of the dyeings expressed by the characteristics of uniformity (equalization) of color and fastness was shown to be equal to or better compared to traditional dyeing with reactives.