Effects of acetylation in vapor phase and mercerization on the properties of sugarcane fibers

Detalhes bibliográficos
Autor(a) principal: Bertoti, Ada Ruth
Data de Publicação: 2009
Outros Autores: Luporini, Samuel, Esperidião, Maria Cecília Azevedo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/13188
Resumo: Texto completo: acesso restrito. p. 20-24
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spelling Bertoti, Ada RuthLuporini, SamuelEsperidião, Maria Cecília AzevedoBertoti, Ada RuthLuporini, SamuelEsperidião, Maria Cecília Azevedo2013-10-11T11:50:58Z20090144-8617http://www.repositorio.ufba.br/ri/handle/ri/13188v. 77, n. 1Texto completo: acesso restrito. p. 20-24Chemical modification of sugarcane bagasse fiber was achieved by mercerization reaction and esterification reaction with anhydride acetic vapor. This is a new acetylation procedure. The results show that the fiber length and diameter are reduced after the reactions. Fourier transform infrared spectroscopy (FT-IR) studies produced clear evidence of the partial acetylation reaction. Optical microscopy revealed fibrillation in the acetylated fiber attributed to hemicellulose dissolution. The thermal stability measured by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) increased after acetylation and decreased after mercerization. The higher thermal stability of the acetylated fiber as compared with modified fibers in liquid medium was attributed to the small quantity of water and acetic acid present for the reaction in vapor phase. The lesser tensile strength of the acetylated fiber was due to fibrillation. The porous structure obtained favors migration of the polymer chains into the fiber acetylated, and thus it should enhance the polymer–fiber adhesion in polymer composites.Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2013-10-11T11:50:58Z No. of bitstreams: 1 1-s2.0-S0144861708005481-main.pdf: 460868 bytes, checksum: 873ed8312e500cf15a8089e1193b70d6 (MD5)Made available in DSpace on 2013-10-11T11:50:58Z (GMT). No. of bitstreams: 1 1-s2.0-S0144861708005481-main.pdf: 460868 bytes, checksum: 873ed8312e500cf15a8089e1193b70d6 (MD5) Previous issue date: 2009http://dx.doi.org/10.1016/j.carbpol.2008.11.036reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBASugarcaneAcetylationMercerizationPhysical propertiesEffects of acetylation in vapor phase and mercerization on the properties of sugarcane fibersCarbohydrate Polymersinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01enginfo:eu-repo/semantics/openAccessORIGINAL1-s2.0-S0144861708005481-main.pdf1-s2.0-S0144861708005481-main.pdfapplication/pdf460868https://repositorio.ufba.br/bitstream/ri/13188/1/1-s2.0-S0144861708005481-main.pdf873ed8312e500cf15a8089e1193b70d6MD51LICENSElicense.txtlicense.txttext/plain1365https://repositorio.ufba.br/bitstream/ri/13188/2/license.txt5371a150bdc863f78dcf39281543bd86MD52TEXT1-s2.0-S0144861708005481-main.pdf.txt1-s2.0-S0144861708005481-main.pdf.txtExtracted texttext/plain25792https://repositorio.ufba.br/bitstream/ri/13188/3/1-s2.0-S0144861708005481-main.pdf.txt89dfc3305600b9f601f9918ea69fe25eMD53ri/131882022-08-08 13:17:37.734oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-08-08T16:17:37Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Effects of acetylation in vapor phase and mercerization on the properties of sugarcane fibers
dc.title.alternative.pt_BR.fl_str_mv Carbohydrate Polymers
title Effects of acetylation in vapor phase and mercerization on the properties of sugarcane fibers
spellingShingle Effects of acetylation in vapor phase and mercerization on the properties of sugarcane fibers
Bertoti, Ada Ruth
Sugarcane
Acetylation
Mercerization
Physical properties
title_short Effects of acetylation in vapor phase and mercerization on the properties of sugarcane fibers
title_full Effects of acetylation in vapor phase and mercerization on the properties of sugarcane fibers
title_fullStr Effects of acetylation in vapor phase and mercerization on the properties of sugarcane fibers
title_full_unstemmed Effects of acetylation in vapor phase and mercerization on the properties of sugarcane fibers
title_sort Effects of acetylation in vapor phase and mercerization on the properties of sugarcane fibers
author Bertoti, Ada Ruth
author_facet Bertoti, Ada Ruth
Luporini, Samuel
Esperidião, Maria Cecília Azevedo
author_role author
author2 Luporini, Samuel
Esperidião, Maria Cecília Azevedo
author2_role author
author
dc.contributor.author.fl_str_mv Bertoti, Ada Ruth
Luporini, Samuel
Esperidião, Maria Cecília Azevedo
Bertoti, Ada Ruth
Luporini, Samuel
Esperidião, Maria Cecília Azevedo
dc.subject.por.fl_str_mv Sugarcane
Acetylation
Mercerization
Physical properties
topic Sugarcane
Acetylation
Mercerization
Physical properties
description Texto completo: acesso restrito. p. 20-24
publishDate 2009
dc.date.issued.fl_str_mv 2009
dc.date.accessioned.fl_str_mv 2013-10-11T11:50:58Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.repositorio.ufba.br/ri/handle/ri/13188
dc.identifier.issn.none.fl_str_mv 0144-8617
dc.identifier.number.pt_BR.fl_str_mv v. 77, n. 1
identifier_str_mv 0144-8617
v. 77, n. 1
url http://www.repositorio.ufba.br/ri/handle/ri/13188
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.source.pt_BR.fl_str_mv http://dx.doi.org/10.1016/j.carbpol.2008.11.036
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
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instname_str Universidade Federal da Bahia (UFBA)
instacron_str UFBA
institution UFBA
reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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