Electronic textiles functionalized with conductive polymers
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Tipo de documento: | Dissertação |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10362/92222 |
Resumo: | Smart textiles have received a lot of attention nowadays for combining two of the most prolific industries: fabrics and electronics. This was possible due to the evolution of conductive polymers, mean-ing that a material as conductive as metals with flexible properties was in the market. Its potential to integrate signals and stimuli from contact means that a myriad of applications might be in the making, spanning interest from electronics to communication, military and biomedical uses. The main goal of this work was to study different methodologies to functionalize commercial textiles with conductive polymers to obtain piezoresistive textiles. Polypyrrole (PPy) and poly(3,4-ethylenedioxythiophene) (PEDOT) are two intrinsically conduc-tive polymers used to functionalize lycra and felt textiles. Such functionalization was carried out by in situ-polymerization of pyrrole (Py) and 3,4-ethylenedioxythiophene (EDOT). Several polymerization con-ditions were evaluated to determine the most suitable ones to prepare stable conductive textiles. In-plane electrical conductivities of 6.707x10−3 Scm−1 to 1.808x10−2 Scm−1 and transversal conductivities of 1.837x10−4 Scm−1 to 2.040x10−3 Scm−1 were reached throughout textiles. Morphological, chemical and electrical characterization was carried before and out after polymerization. Piezoresistive behaviour of textiles was studied, because coated and agglomerated polymer comes into different contacts when stress is applied. Two different approaches were studied: stretch behaviour for elastic lycra ranging from 11-26kΩ and pressure behaviour for felt textiles ranging from 0.72-19.54kΩ. Finally, stability tests were studied. In this section, abrasion was performed to show the wear off textiles. Felt had the best stability with values from 3.903x10−4 S.cm−1 to 6.685x10−6 S.cm−1, while lycra had the worst results, from 1.242x10−4 S.cm−1 to 2.696x10−11 S.cm−1. Conductivity over time was studied, showing there is over a 50% conductivity decline over 6 months. Washing cycles, showed de-clines of over four orders of magnitude, compromising further use. |
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Electronic textiles functionalized with conductive polymersPolypyrrolePEDOTsmart textilespiezoresistiveflexible electronicsDomínio/Área Científica::Engenharia e Tecnologia::NanotecnologiaSmart textiles have received a lot of attention nowadays for combining two of the most prolific industries: fabrics and electronics. This was possible due to the evolution of conductive polymers, mean-ing that a material as conductive as metals with flexible properties was in the market. Its potential to integrate signals and stimuli from contact means that a myriad of applications might be in the making, spanning interest from electronics to communication, military and biomedical uses. The main goal of this work was to study different methodologies to functionalize commercial textiles with conductive polymers to obtain piezoresistive textiles. Polypyrrole (PPy) and poly(3,4-ethylenedioxythiophene) (PEDOT) are two intrinsically conduc-tive polymers used to functionalize lycra and felt textiles. Such functionalization was carried out by in situ-polymerization of pyrrole (Py) and 3,4-ethylenedioxythiophene (EDOT). Several polymerization con-ditions were evaluated to determine the most suitable ones to prepare stable conductive textiles. In-plane electrical conductivities of 6.707x10−3 Scm−1 to 1.808x10−2 Scm−1 and transversal conductivities of 1.837x10−4 Scm−1 to 2.040x10−3 Scm−1 were reached throughout textiles. Morphological, chemical and electrical characterization was carried before and out after polymerization. Piezoresistive behaviour of textiles was studied, because coated and agglomerated polymer comes into different contacts when stress is applied. Two different approaches were studied: stretch behaviour for elastic lycra ranging from 11-26kΩ and pressure behaviour for felt textiles ranging from 0.72-19.54kΩ. Finally, stability tests were studied. In this section, abrasion was performed to show the wear off textiles. Felt had the best stability with values from 3.903x10−4 S.cm−1 to 6.685x10−6 S.cm−1, while lycra had the worst results, from 1.242x10−4 S.cm−1 to 2.696x10−11 S.cm−1. Conductivity over time was studied, showing there is over a 50% conductivity decline over 6 months. Washing cycles, showed de-clines of over four orders of magnitude, compromising further use.Baptista, AnaFaustino, BrunoRUNMendes, Bernardo Luís Moura2020-02-05T16:34:27Z2019-1220192019-12-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfhttp://hdl.handle.net/10362/92222enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-05-22T17:43:14Zoai:run.unl.pt:10362/92222Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-22T17:43:14Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Electronic textiles functionalized with conductive polymers |
title |
Electronic textiles functionalized with conductive polymers |
spellingShingle |
Electronic textiles functionalized with conductive polymers Mendes, Bernardo Luís Moura Polypyrrole PEDOT smart textiles piezoresistive flexible electronics Domínio/Área Científica::Engenharia e Tecnologia::Nanotecnologia |
title_short |
Electronic textiles functionalized with conductive polymers |
title_full |
Electronic textiles functionalized with conductive polymers |
title_fullStr |
Electronic textiles functionalized with conductive polymers |
title_full_unstemmed |
Electronic textiles functionalized with conductive polymers |
title_sort |
Electronic textiles functionalized with conductive polymers |
author |
Mendes, Bernardo Luís Moura |
author_facet |
Mendes, Bernardo Luís Moura |
author_role |
author |
dc.contributor.none.fl_str_mv |
Baptista, Ana Faustino, Bruno RUN |
dc.contributor.author.fl_str_mv |
Mendes, Bernardo Luís Moura |
dc.subject.por.fl_str_mv |
Polypyrrole PEDOT smart textiles piezoresistive flexible electronics Domínio/Área Científica::Engenharia e Tecnologia::Nanotecnologia |
topic |
Polypyrrole PEDOT smart textiles piezoresistive flexible electronics Domínio/Área Científica::Engenharia e Tecnologia::Nanotecnologia |
description |
Smart textiles have received a lot of attention nowadays for combining two of the most prolific industries: fabrics and electronics. This was possible due to the evolution of conductive polymers, mean-ing that a material as conductive as metals with flexible properties was in the market. Its potential to integrate signals and stimuli from contact means that a myriad of applications might be in the making, spanning interest from electronics to communication, military and biomedical uses. The main goal of this work was to study different methodologies to functionalize commercial textiles with conductive polymers to obtain piezoresistive textiles. Polypyrrole (PPy) and poly(3,4-ethylenedioxythiophene) (PEDOT) are two intrinsically conduc-tive polymers used to functionalize lycra and felt textiles. Such functionalization was carried out by in situ-polymerization of pyrrole (Py) and 3,4-ethylenedioxythiophene (EDOT). Several polymerization con-ditions were evaluated to determine the most suitable ones to prepare stable conductive textiles. In-plane electrical conductivities of 6.707x10−3 Scm−1 to 1.808x10−2 Scm−1 and transversal conductivities of 1.837x10−4 Scm−1 to 2.040x10−3 Scm−1 were reached throughout textiles. Morphological, chemical and electrical characterization was carried before and out after polymerization. Piezoresistive behaviour of textiles was studied, because coated and agglomerated polymer comes into different contacts when stress is applied. Two different approaches were studied: stretch behaviour for elastic lycra ranging from 11-26kΩ and pressure behaviour for felt textiles ranging from 0.72-19.54kΩ. Finally, stability tests were studied. In this section, abrasion was performed to show the wear off textiles. Felt had the best stability with values from 3.903x10−4 S.cm−1 to 6.685x10−6 S.cm−1, while lycra had the worst results, from 1.242x10−4 S.cm−1 to 2.696x10−11 S.cm−1. Conductivity over time was studied, showing there is over a 50% conductivity decline over 6 months. Washing cycles, showed de-clines of over four orders of magnitude, compromising further use. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-12 2019 2019-12-01T00:00:00Z 2020-02-05T16:34:27Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10362/92222 |
url |
http://hdl.handle.net/10362/92222 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
mluisa.alvim@gmail.com |
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1817545724781395968 |