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Master's Dissertation
DOI
https://doi.org/10.11606/D.100.2017.tde-26062017-163501
Document
Author
Full name
Maurício Lopes Gondim
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2016
Supervisor
Committee
Sanches, Regina Aparecida (President)
Borelli, Camilla
Gasi, Fernando
Marcicano, João Paulo Pereira
Title in Portuguese
Estudo comparativo do ângulo de contato em tecidos de malha de poliamida tratados com plasma
Keywords in Portuguese
Ângulo de contato
Descarga plasmática
Dupla barreira dielétrica
Poliamida 6.6
Abstract in Portuguese
Dentre as técnicas de modificação de propriedades das superfícies aplicadas na indústria, o tratamento por plasma é amplamente utilizado. Diversos estudos têm sido realizados, sobretudo na última década, analisando artigos têxteis de diferentes fibras quanto a melhoria das funcionalidades. O objetivo deste trabalho é estudar comparativamente as propriedades de umectação de tecidos de malha de poliamida 6.6 com elastano antes e após aplicação de descarga plasmática de dupla barreira dielétrica. As malhas foram fabricadas utilizando-se como matérias-primas fios e poliamida e de elastano. Os tecidos receberam a aplicação do tratamento de plasma, com potências de 1,2 e 1,5 kW. Foram realizadas três leituras de ângulo de contato dinâmico: logo após o tratamento, 2 horas após o tratamento e 24 horas após o tratamento. Foi feita uma única leitura em uma das amostras antes de submetê-la ao tratamento (controle). No tingimento das amostras foram utilizados corantes ácidos e reativos e realizados ensaios de solidez à lavagem e solidez da cor à lavagem doméstica. Observou-se uma redução significativa no valor do ângulo de contato das amostras tratadas com plasma, aumentando a capacidade de absorção do tecido de malha
Title in English
Comparative study of the contact angle in knitted fabrics of polyamide treated with plasma
Keywords in English
Contact angle
Double dielectric barrier
Plasma discharge
Polyamide 6.6
Abstract in English
Among the surfaces of the property modifying techniques used in the industry, plasma treatment is widely used. Several studies have been conducted, especially in the last decade, analyzing textiles articles of different fibers and improved features. The target of this job is study comparatively the wetting properties of polyamide 6.6 knitted fabrics with spandex before and after application of plasma discharge double dielectric barrier. The knitting were produced using as raw materials polyamide yarn and elastane. Fabrics received application of plasma treatment with potencies of 1.2 and 1.5 kW. three readings dynamic contact angle were made: immediately after treatment, 2 hours after treatment and 24 hours after treatment. a single reading was done on a sample before submitting it to treatment (control). In the dyeing of the samples were used acids and reactive dyes and performed strength tests to washing and color fastness to domestic laundering. a significant decrease was observed in the value of the contact angle of the samples treated with plasma, increasing the absorption capacity of the knitting fabric
 
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Publishing Date
2017-12-13
 
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