NANOCRISTAIS DE CELULOSE A PARTIR DE CELULOSE BACTERIANA

Detalhes bibliográficos
Autor(a) principal: Lima,Lais R.
Data de Publicação: 2015
Outros Autores: Santos,Daniele B., Santos,Molíria V., Barud,Hernane S., Henrique,Mariana A., Pasquini,Daniel, Pecoraro,Edison, Ribeiro,Sidney J. L.
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422015000901140
Resumo: Bacterial cellulose produced from Gluconacetobacter xilinus was used to produce cellulose nanocrystals by sulfuric acid hydrolysis. Hydrolysis was performed with 64% sulfuric acid at 50 ºC with the hydrolysis time ranging between 5 and 90 min. The production of nanocrystals was observed to have size distributions that were dependent on hydrolysis times up to 10 min, after which time the suspensions showed distributions closer in size. Results from thermal analysis and X-ray diffraction showed that the amorphous cellulose was removed, leaving only the crystalline portion. Self-supported films were formed from the suspension of nanocrystals and had iridescence characteristics. The films were characterized by microscopy measures and specular reflectance.
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spelling NANOCRISTAIS DE CELULOSE A PARTIR DE CELULOSE BACTERIANAbacterial cellulosenanocrystalshydrolysis timeiridescent filmsBacterial cellulose produced from Gluconacetobacter xilinus was used to produce cellulose nanocrystals by sulfuric acid hydrolysis. Hydrolysis was performed with 64% sulfuric acid at 50 ºC with the hydrolysis time ranging between 5 and 90 min. The production of nanocrystals was observed to have size distributions that were dependent on hydrolysis times up to 10 min, after which time the suspensions showed distributions closer in size. Results from thermal analysis and X-ray diffraction showed that the amorphous cellulose was removed, leaving only the crystalline portion. Self-supported films were formed from the suspension of nanocrystals and had iridescence characteristics. The films were characterized by microscopy measures and specular reflectance.Sociedade Brasileira de Química2015-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422015000901140Química Nova v.38 n.9 2015reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.5935/0100-4042.20150131info:eu-repo/semantics/openAccessLima,Lais R.Santos,Daniele B.Santos,Molíria V.Barud,Hernane S.Henrique,Mariana A.Pasquini,DanielPecoraro,EdisonRibeiro,Sidney J. L.por2015-12-01T00:00:00Zoai:scielo:S0100-40422015000901140Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2015-12-01T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv NANOCRISTAIS DE CELULOSE A PARTIR DE CELULOSE BACTERIANA
title NANOCRISTAIS DE CELULOSE A PARTIR DE CELULOSE BACTERIANA
spellingShingle NANOCRISTAIS DE CELULOSE A PARTIR DE CELULOSE BACTERIANA
Lima,Lais R.
bacterial cellulose
nanocrystals
hydrolysis time
iridescent films
title_short NANOCRISTAIS DE CELULOSE A PARTIR DE CELULOSE BACTERIANA
title_full NANOCRISTAIS DE CELULOSE A PARTIR DE CELULOSE BACTERIANA
title_fullStr NANOCRISTAIS DE CELULOSE A PARTIR DE CELULOSE BACTERIANA
title_full_unstemmed NANOCRISTAIS DE CELULOSE A PARTIR DE CELULOSE BACTERIANA
title_sort NANOCRISTAIS DE CELULOSE A PARTIR DE CELULOSE BACTERIANA
author Lima,Lais R.
author_facet Lima,Lais R.
Santos,Daniele B.
Santos,Molíria V.
Barud,Hernane S.
Henrique,Mariana A.
Pasquini,Daniel
Pecoraro,Edison
Ribeiro,Sidney J. L.
author_role author
author2 Santos,Daniele B.
Santos,Molíria V.
Barud,Hernane S.
Henrique,Mariana A.
Pasquini,Daniel
Pecoraro,Edison
Ribeiro,Sidney J. L.
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Lima,Lais R.
Santos,Daniele B.
Santos,Molíria V.
Barud,Hernane S.
Henrique,Mariana A.
Pasquini,Daniel
Pecoraro,Edison
Ribeiro,Sidney J. L.
dc.subject.por.fl_str_mv bacterial cellulose
nanocrystals
hydrolysis time
iridescent films
topic bacterial cellulose
nanocrystals
hydrolysis time
iridescent films
description Bacterial cellulose produced from Gluconacetobacter xilinus was used to produce cellulose nanocrystals by sulfuric acid hydrolysis. Hydrolysis was performed with 64% sulfuric acid at 50 ºC with the hydrolysis time ranging between 5 and 90 min. The production of nanocrystals was observed to have size distributions that were dependent on hydrolysis times up to 10 min, after which time the suspensions showed distributions closer in size. Results from thermal analysis and X-ray diffraction showed that the amorphous cellulose was removed, leaving only the crystalline portion. Self-supported films were formed from the suspension of nanocrystals and had iridescence characteristics. The films were characterized by microscopy measures and specular reflectance.
publishDate 2015
dc.date.none.fl_str_mv 2015-11-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422015000901140
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422015000901140
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.5935/0100-4042.20150131
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Química Nova v.38 n.9 2015
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
_version_ 1750318117088657408

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