Effect of the radiolitic sterilization in polyethylene/starch blends

Detalhes bibliográficos
Autor(a) principal: Ferreira,Flávia Gonçalves Domingues
Data de Publicação: 2008
Outros Autores: Lima,Maria Alice Gomes de Andrade, Almeida,Yêda Medeiros Bastos de, Vinhas,Glória Maria
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000500018
Resumo: Samples of LDPE/modified starch blends 80/20 m/m before and after exposure to gamma rays were examined by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction. The effect of gamma radiation is clearly seen in the samples irradiated at a dose of 25 kGy. The main alteration in the polymeric material after exposure at the radiation range was a decrease in the mechanical properties, alterations in the chemical structure of the blend with an increase in the carbonyl and vinyl indices and the appearance of new crystalline symmetry generating a crystalline domain not existing before in the blend.
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spelling Effect of the radiolitic sterilization in polyethylene/starch blendspolyethylenegamma radiationstarchSamples of LDPE/modified starch blends 80/20 m/m before and after exposure to gamma rays were examined by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction. The effect of gamma radiation is clearly seen in the samples irradiated at a dose of 25 kGy. The main alteration in the polymeric material after exposure at the radiation range was a decrease in the mechanical properties, alterations in the chemical structure of the blend with an increase in the carbonyl and vinyl indices and the appearance of new crystalline symmetry generating a crystalline domain not existing before in the blend.Sociedade Brasileira de Química2008-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000500018Química Nova v.31 n.5 2008reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422008000500018info:eu-repo/semantics/openAccessFerreira,Flávia Gonçalves DominguesLima,Maria Alice Gomes de AndradeAlmeida,Yêda Medeiros Bastos deVinhas,Glória Mariaeng2008-09-12T00:00:00Zoai:scielo:S0100-40422008000500018Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2008-09-12T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Effect of the radiolitic sterilization in polyethylene/starch blends
title Effect of the radiolitic sterilization in polyethylene/starch blends
spellingShingle Effect of the radiolitic sterilization in polyethylene/starch blends
Ferreira,Flávia Gonçalves Domingues
polyethylene
gamma radiation
starch
title_short Effect of the radiolitic sterilization in polyethylene/starch blends
title_full Effect of the radiolitic sterilization in polyethylene/starch blends
title_fullStr Effect of the radiolitic sterilization in polyethylene/starch blends
title_full_unstemmed Effect of the radiolitic sterilization in polyethylene/starch blends
title_sort Effect of the radiolitic sterilization in polyethylene/starch blends
author Ferreira,Flávia Gonçalves Domingues
author_facet Ferreira,Flávia Gonçalves Domingues
Lima,Maria Alice Gomes de Andrade
Almeida,Yêda Medeiros Bastos de
Vinhas,Glória Maria
author_role author
author2 Lima,Maria Alice Gomes de Andrade
Almeida,Yêda Medeiros Bastos de
Vinhas,Glória Maria
author2_role author
author
author
dc.contributor.author.fl_str_mv Ferreira,Flávia Gonçalves Domingues
Lima,Maria Alice Gomes de Andrade
Almeida,Yêda Medeiros Bastos de
Vinhas,Glória Maria
dc.subject.por.fl_str_mv polyethylene
gamma radiation
starch
topic polyethylene
gamma radiation
starch
description Samples of LDPE/modified starch blends 80/20 m/m before and after exposure to gamma rays were examined by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction. The effect of gamma radiation is clearly seen in the samples irradiated at a dose of 25 kGy. The main alteration in the polymeric material after exposure at the radiation range was a decrease in the mechanical properties, alterations in the chemical structure of the blend with an increase in the carbonyl and vinyl indices and the appearance of new crystalline symmetry generating a crystalline domain not existing before in the blend.
publishDate 2008
dc.date.none.fl_str_mv 2008-01-01
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=S0100-40422008000500018
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422008000500018
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0100-40422008000500018
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.31 n.5 2008
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
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