Publicação
Insight into the effects of solvent treatment of natural fibers prior to structural composite casting: chemical, physical and mechanical evaluation
| Resumo: | This paper presents an optimized washing protocol for as-received natural fibers, prior to large-scale composite manufacturing, for the structural strengthening of historic masonry. The aim was to achieve a simple protocol for standard cleaning of fiber surfaces from low molecular weight constituents that may be detrimental towards interfacial strength without damaging the fibers. The proposed procedure employs the application of the solvent sequence: ethanol, acetone, hexane, with optimized incubation times and stirring conditions. Additionally, this procedure may change the surface of the fiber, thereby enhancing the durability of the fiber-matrix interface. The washing protocol resulted in an increase of tensile strength by 56%, 52% and 22% for flax, hemp and sisal fibers, respectively, as compared to the corresponding non-washed fibers, without loss of elongation. The static contact angle measurements confirmed exposure of a higher fraction of the hydrophilic crystalline cellulose, with a higher wettability observed after washing protocols. |
|---|---|
| Autores principais: | Abbass, Ali |
| Outros Autores: | Paiva, Maria C.; Oliveira, Daniel V.; Lourenço, Paulo B.; Fangueiro, Raúl |
| Assunto: | Built heritage Masonry Natural fibers NTRM Surface modification FTIR Contact angle Tensile test Archimedes |
| Ano: | 2021 |
| País: | Portugal |
| Tipo de documento: | artigo |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1867438124324356096 |
|---|---|
| author | Abbass, Ali |
| author2 | Paiva, Maria C. Oliveira, Daniel V. Lourenço, Paulo B. Fangueiro, Raúl |
| author2_role | author author author author |
| author_facet | Abbass, Ali Paiva, Maria C. Oliveira, Daniel V. Lourenço, Paulo B. Fangueiro, Raúl |
| author_role | author |
| contributor_name_str_mv | RepositóriUM - Universidade do Minho |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Abbass, Ali\"},{\"Person.name\":\"Paiva, Maria C.\"},{\"Person.name\":\"Oliveira, Daniel V.\"},{\"Person.name\":\"Lourenço, Paulo B.\"},{\"Person.name\":\"Fangueiro, Raúl\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | RepositóriUM - Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Abbass, Ali Paiva, Maria C. Oliveira, Daniel V. Lourenço, Paulo B. Fangueiro, Raúl |
| datacite.date.Accepted.fl_str_mv | 2021-09-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2021-11-23T10:02:57Z |
| datacite.date.embargoed.fl_str_mv | 2021-11-23T10:02:57Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Built heritage Masonry Natural fibers NTRM Surface modification FTIR Contact angle Tensile test Archimedes |
| datacite.titles.title.fl_str_mv | Insight into the effects of solvent treatment of natural fibers prior to structural composite casting: chemical, physical and mechanical evaluation |
| dc.contributor.none.fl_str_mv | RepositóriUM - Universidade do Minho |
| dc.creator.none.fl_str_mv | Abbass, Ali Paiva, Maria C. Oliveira, Daniel V. Lourenço, Paulo B. Fangueiro, Raúl |
| dc.date.Accepted.fl_str_mv | 2021-09-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2021-11-23T10:02:57Z |
| dc.date.embargoed.fl_str_mv | 2021-11-23T10:02:57Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/74764 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Multidisciplinary Digital Publishing Institute (MDPI) |
| dc.rights.cclincense.fl_str_mv | http://creativecommons.org/licenses/by/4.0/ |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.rights.rights.copyright.fl_str_mv | openAccess |
| dc.subject.none.fl_str_mv | Built heritage Masonry Natural fibers NTRM Surface modification FTIR Contact angle Tensile test Archimedes |
| dc.title.fl_str_mv | Insight into the effects of solvent treatment of natural fibers prior to structural composite casting: chemical, physical and mechanical evaluation |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_6501 |
| description | This paper presents an optimized washing protocol for as-received natural fibers, prior to large-scale composite manufacturing, for the structural strengthening of historic masonry. The aim was to achieve a simple protocol for standard cleaning of fiber surfaces from low molecular weight constituents that may be detrimental towards interfacial strength without damaging the fibers. The proposed procedure employs the application of the solvent sequence: ethanol, acetone, hexane, with optimized incubation times and stirring conditions. Additionally, this procedure may change the surface of the fiber, thereby enhancing the durability of the fiber-matrix interface. The washing protocol resulted in an increase of tensile strength by 56%, 52% and 22% for flax, hemp and sisal fibers, respectively, as compared to the corresponding non-washed fibers, without loss of elongation. The static contact angle measurements confirmed exposure of a higher fraction of the hydrophilic crystalline cellulose, with a higher wettability observed after washing protocols. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | article |
| fulltext.url.fl_str_mv | https://repositorium.uminho.pt/bitstreams/85e09c98-429c-4d27-93cf-7a75654a9400/download |
| id | rum_4e79d7a998d5def4a9e284b30e2a2b2e |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/74764 |
| instacron_str | repositorium |
| institution | Universidade do Minho |
| instname_str | Universidade do Minho |
| language | eng |
| network_acronym_str | rum |
| network_name_str | RepositóriUM - Universidade do Minho |
| oai_identifier_str | oai:repositorium.uminho.pt:1822/74764 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Abbass, Ali Paiva, Maria C. Oliveira, Daniel V. Lourenço, Paulo B. Fangueiro, Raúl |
| publishDate | 2021 |
| publisher.none.fl_str_mv | Multidisciplinary Digital Publishing Institute (MDPI) |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engMultidisciplinary Digital Publishing Institute (MDPI)porThis paper presents an optimized washing protocol for as-received natural fibers, prior to large-scale composite manufacturing, for the structural strengthening of historic masonry. The aim was to achieve a simple protocol for standard cleaning of fiber surfaces from low molecular weight constituents that may be detrimental towards interfacial strength without damaging the fibers. The proposed procedure employs the application of the solvent sequence: ethanol, acetone, hexane, with optimized incubation times and stirring conditions. Additionally, this procedure may change the surface of the fiber, thereby enhancing the durability of the fiber-matrix interface. The washing protocol resulted in an increase of tensile strength by 56%, 52% and 22% for flax, hemp and sisal fibers, respectively, as compared to the corresponding non-washed fibers, without loss of elongation. The static contact angle measurements confirmed exposure of a higher fraction of the hydrophilic crystalline cellulose, with a higher wettability observed after washing protocols.application/pdfporInsight into the effects of solvent treatment of natural fibers prior to structural composite casting: chemical, physical and mechanical evaluationAbbass, AliPaiva, Maria C.Oliveira, Daniel V.Lourenço, Paulo B.Fangueiro, RaúlHostingInstitutionOrganizationalRepositóriUM - Universidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.ptCITATIONAbbass, A.; Paiva, M.C.; Oliveira, D.V.; Lourenço, P.B.; Fangueiro, R. Insight into the Effects of Solvent Treatment of Natural Fibers Prior to Structural Composite Casting: Chemical, Physical and Mechanical Evaluation. Fibers 2021, 9, 54. https://doi.org/10.3390/fib9090054EISSNIsPartOf2079-6439DOIIsPartOf10.3390/fib90900542021-11-23T10:02:57Z2021-09-012021-09-25T23:33:51Z2021-09-01T00:00:00ZHandlehttps://hdl.handle.net/1822/74764http://purl.org/coar/access_right/c_abf2open accessBuilt heritageMasonryNatural fibersNTRMSurface modificationFTIRContact angleTensile testArchimedes14414572 bytesliteraturehttp://purl.org/coar/resource_type/c_6501journal article2021-09-01http://creativecommons.org/licenses/by/4.0/openAccesshttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://repositorium.uminho.pt/bitstreams/85e09c98-429c-4d27-93cf-7a75654a9400/download |
| spellingShingle | Insight into the effects of solvent treatment of natural fibers prior to structural composite casting: chemical, physical and mechanical evaluation Abbass, Ali Built heritage Masonry Natural fibers NTRM Surface modification FTIR Contact angle Tensile test Archimedes |
| status | SINGLETON |
| subject.fl_str_mv | Built heritage Masonry Natural fibers NTRM Surface modification FTIR Contact angle Tensile test Archimedes |
| title | Insight into the effects of solvent treatment of natural fibers prior to structural composite casting: chemical, physical and mechanical evaluation |
| title_full | Insight into the effects of solvent treatment of natural fibers prior to structural composite casting: chemical, physical and mechanical evaluation |
| title_fullStr | Insight into the effects of solvent treatment of natural fibers prior to structural composite casting: chemical, physical and mechanical evaluation |
| title_full_unstemmed | Insight into the effects of solvent treatment of natural fibers prior to structural composite casting: chemical, physical and mechanical evaluation |
| title_short | Insight into the effects of solvent treatment of natural fibers prior to structural composite casting: chemical, physical and mechanical evaluation |
| title_sort | Insight into the effects of solvent treatment of natural fibers prior to structural composite casting: chemical, physical and mechanical evaluation |
| topic | Built heritage Masonry Natural fibers NTRM Surface modification FTIR Contact angle Tensile test Archimedes |
| topic_facet | Built heritage Masonry Natural fibers NTRM Surface modification FTIR Contact angle Tensile test Archimedes |
| url | https://hdl.handle.net/1822/74764 |
| visible | 1 |