Effect of cold plasma treatment on recycled polyethylene/kapok composites interface adhesion

Composites from recycled polyethylene and kapok fibers were pre- pared using untreated and plasma-treated fibers. Flow properties, mechanical properties and fracture morphology were analyzed in order to evaluate the effects of cold plasma treatment on kapok fibers to improve interfacial bondin...

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Principais autores: Feitor, Michele Cequeira, Macedo, Murilo José Pereira, Mattos, Adriano Lincoln Albuquerque, Costa, Thércio Henrique de Carvalho, Ito, Edson Noriyuki, Melo, José Daniel Diniz
Formato: article
Idioma:English
Publicado em: Composite Interfaces
Assuntos:
Kapok fibers
plasma treatment
polyethylene waste
recycling
Endereço do item:https://repositorio.ufrn.br/handle/123456789/46192
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spelling ri-123456789-461922023-02-08T20:56:59Z Effect of cold plasma treatment on recycled polyethylene/kapok composites interface adhesion Feitor, Michele Cequeira Macedo, Murilo José Pereira Mattos, Adriano Lincoln Albuquerque Costa, Thércio Henrique de Carvalho Ito, Edson Noriyuki Melo, José Daniel Diniz Kapok fibers plasma treatment polyethylene waste recycling Composites from recycled polyethylene and kapok fibers were pre- pared using untreated and plasma-treated fibers. Flow properties, mechanical properties and fracture morphology were analyzed in order to evaluate the effects of cold plasma treatment on kapok fibers to improve interfacial bonding between fibers and matrix. Melt flow rate (MFR) measurements indicated a reduction in flow rate of the polymer with the addition of kapok fibers. Storage modulus increased with fiber addition and this effect was more significant when plasma- treated fibers were used. Tanδ obtained from viscoelastic characteriza- tion also suggested improvements in fiber/matrix interface as a result of plasma treatment. Addition of kapok fibers to polyethylene pro- duced a reduction in onset decomposition temperature determined from thermogravimetry curve. However, the decrease in temperature observed does not limit composite processing. Furthermore, the degree of crystallinity of polyethylene increased with the addition of untreated fibers and reduced when plasma treated fibers were added. Morphological analysis of failure surface by Field Emission Gun Scanning Electron Microscopy (FEGSEM) suggest that fiber/matrix adhesion was clearly improved when plasma treated fibers were used. Thus, the oxygen cold plasma treatment proved to be an effec- tive non-polluting approach to enhance matrix/fiber adhesion in poly- ethylene/kapok fiber composites, as opposed to chemical treatments. 2022-02-22T19:14:13Z 2022-02-22T19:14:13Z 2018-11-26 article MACEDO, Murilo J.P.; MATTOS, Adriano L.A.; COSTA, Thércio H.C.; FEITOR, Michele C.; ITO, Edson N.; MELO, José D.D.. Effect of cold plasma treatment on recycled polyethylene/kapok composites interface adhesion. Composite Interfaces, [S.l.], v. 26, n. 10, p. 871-886, 26 nov. 2018. Informa UK Limited. DOI: http://dx.doi.org/10.1080/09276440.2018.1549892. Disponível em: https://www.tandfonline.com/doi/abs/10.1080/09276440.2018.1549892?journalCode=tcoi20. Acesso em: 14 abr. 2021. Electronic: 1568-5543 https://repositorio.ufrn.br/handle/123456789/46192 org/10.1080/09276440.2018.1549892 en Composite Interfaces
institution Repositório Institucional
collection RI - UFRN
language English
topic Kapok fibers
plasma treatment
polyethylene waste
recycling
spellingShingle Kapok fibers
plasma treatment
polyethylene waste
recycling
Feitor, Michele Cequeira
Macedo, Murilo José Pereira
Mattos, Adriano Lincoln Albuquerque
Costa, Thércio Henrique de Carvalho
Ito, Edson Noriyuki
Melo, José Daniel Diniz
Effect of cold plasma treatment on recycled polyethylene/kapok composites interface adhesion
description Composites from recycled polyethylene and kapok fibers were pre- pared using untreated and plasma-treated fibers. Flow properties, mechanical properties and fracture morphology were analyzed in order to evaluate the effects of cold plasma treatment on kapok fibers to improve interfacial bonding between fibers and matrix. Melt flow rate (MFR) measurements indicated a reduction in flow rate of the polymer with the addition of kapok fibers. Storage modulus increased with fiber addition and this effect was more significant when plasma- treated fibers were used. Tanδ obtained from viscoelastic characteriza- tion also suggested improvements in fiber/matrix interface as a result of plasma treatment. Addition of kapok fibers to polyethylene pro- duced a reduction in onset decomposition temperature determined from thermogravimetry curve. However, the decrease in temperature observed does not limit composite processing. Furthermore, the degree of crystallinity of polyethylene increased with the addition of untreated fibers and reduced when plasma treated fibers were added. Morphological analysis of failure surface by Field Emission Gun Scanning Electron Microscopy (FEGSEM) suggest that fiber/matrix adhesion was clearly improved when plasma treated fibers were used. Thus, the oxygen cold plasma treatment proved to be an effec- tive non-polluting approach to enhance matrix/fiber adhesion in poly- ethylene/kapok fiber composites, as opposed to chemical treatments.
format article
author Feitor, Michele Cequeira
Macedo, Murilo José Pereira
Mattos, Adriano Lincoln Albuquerque
Costa, Thércio Henrique de Carvalho
Ito, Edson Noriyuki
Melo, José Daniel Diniz
author_facet Feitor, Michele Cequeira
Macedo, Murilo José Pereira
Mattos, Adriano Lincoln Albuquerque
Costa, Thércio Henrique de Carvalho
Ito, Edson Noriyuki
Melo, José Daniel Diniz
author_sort Feitor, Michele Cequeira
title Effect of cold plasma treatment on recycled polyethylene/kapok composites interface adhesion
title_short Effect of cold plasma treatment on recycled polyethylene/kapok composites interface adhesion
title_full Effect of cold plasma treatment on recycled polyethylene/kapok composites interface adhesion
title_fullStr Effect of cold plasma treatment on recycled polyethylene/kapok composites interface adhesion
title_full_unstemmed Effect of cold plasma treatment on recycled polyethylene/kapok composites interface adhesion
title_sort effect of cold plasma treatment on recycled polyethylene/kapok composites interface adhesion
publisher Composite Interfaces
publishDate 2022
url https://repositorio.ufrn.br/handle/123456789/46192
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AT mattosadrianolincolnalbuquerque effectofcoldplasmatreatmentonrecycledpolyethylenekapokcompositesinterfaceadhesion
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