WOOD BASIC DENSITY EFFECT OF Eucalyptus grandis x Eucalyptus urophylla CLONES ON BLEACHED PULP QUALITY

Detalhes bibliográficos
Autor(a) principal: Santos, Sheila Rodrigues dos
Data de Publicação: 2007
Outros Autores: Sansígolo, Cláudio Angeli
Tipo de documento: Artigo
Idioma: por
Título da fonte: Ciência Florestal (Online)
Texto Completo: https://periodicos.ufsm.br/cienciaflorestal/article/view/1935
Resumo: The study analyzed the wood basic density effect in two Eucalyptus grandis x Eucalyptus urophylla hybrid clones (440 kg/m3 e 508 kg/m3) on bleached pulp quality (fiber dimensions and physical-mechanical properties). The woods performance on pulping, bleaching and beating results were analyzed. The Kraft pulping was carried out in forced circulation digester in order to obtain 17±1 kappa number targets. The pulps were bleached to 90±1 using delignification oxygen and D0EOPD1 bleaching sequence. Bleached pulp of low basic density clone showed, significantly, lowest revolutions number in the PFI mill to reach tensile index of 70 N.m/g, low Schopper Riegler degree and generated sheets with higher values to bulk and opacity. These characteristics and properties allow concluding that bleached pulp of low basic density clone was the most indicated to produce printing and writing sheets. The bleached pulp of high basic density clone showed higher values of bulk and capillarity Klemm and lower water retention value when analyzed without beating. The bleached pulp of high basic density clone showed more favorable characteristics to the production of tissue papers.
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spelling WOOD BASIC DENSITY EFFECT OF Eucalyptus grandis x Eucalyptus urophylla CLONES ON BLEACHED PULP QUALITYInfluência da densidade básica da madeira de clones de Eucalyptus grandis x Eucalyptus urophylla na qualidade da polpa branqueada.Basic densityKraft pulpingclonesbleaching pulp properties.Densidade básicapolpa Kraftclonespropriedades da polpa branqueadaThe study analyzed the wood basic density effect in two Eucalyptus grandis x Eucalyptus urophylla hybrid clones (440 kg/m3 e 508 kg/m3) on bleached pulp quality (fiber dimensions and physical-mechanical properties). The woods performance on pulping, bleaching and beating results were analyzed. The Kraft pulping was carried out in forced circulation digester in order to obtain 17±1 kappa number targets. The pulps were bleached to 90±1 using delignification oxygen and D0EOPD1 bleaching sequence. Bleached pulp of low basic density clone showed, significantly, lowest revolutions number in the PFI mill to reach tensile index of 70 N.m/g, low Schopper Riegler degree and generated sheets with higher values to bulk and opacity. These characteristics and properties allow concluding that bleached pulp of low basic density clone was the most indicated to produce printing and writing sheets. The bleached pulp of high basic density clone showed higher values of bulk and capillarity Klemm and lower water retention value when analyzed without beating. The bleached pulp of high basic density clone showed more favorable characteristics to the production of tissue papers.O estudo analisou a influência da densidade básica de dois clones do híbrido de Eucalyptus grandis x Eucalyptus urophylla (440 kg/m3 e 508 kg/m3) na qualidade da polpa branqueada (dimensões de fibras e propriedades físico-mecânicas). O desempenho das madeiras nos resultados da polpação, branqueamento e refino foram analisados. As polpações Kraft foram realizadas em digestor de circulação forçada para obtenção de números kappa de 17 ± 1. As polpas não-branqueadas foram submetidas a uma pré-deslignificação com oxigênio e branqueadas pela seqüência D0EOPD1 visando à alvura de 90 ± 1. Os resultados obtidos mostraram que a polpa branqueada do clone de menor densidade básica apresentou, significativamente, menor número de revoluções no moinho PFI para atingir o índice de tração de 70 N.m/g, baixo grau. Schopper Riegler, para atingir esse nível de tração, gerou folhas com valores mais elevados de volume específico e opacidade. Essas características e propriedades permitem concluir que a polpa do clone de menor densidade foi mais indicada para a fabricação de papéis de imprimir e escrever. A polpa branqueada do clone de maior densidade básica apresentou valores mais elevados de volume específico aparente, ascensão capilar Klemm e menor índice de retenção de água quando analisada sem refino. A polpa branqueada do clone de maior densidade básica mostrou características mais favoráveis para a fabricação de papéis para fins sanitários.Universidade Federal de Santa Maria2007-03-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufsm.br/cienciaflorestal/article/view/193510.5902/198050981935Ciência Florestal; Vol. 17 No. 1 (2007); 53-63Ciência Florestal; v. 17 n. 1 (2007); 53-631980-50980103-9954reponame:Ciência Florestal (Online)instname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMporhttps://periodicos.ufsm.br/cienciaflorestal/article/view/1935/1177Santos, Sheila Rodrigues dosSansígolo, Cláudio Angeliinfo:eu-repo/semantics/openAccess2017-05-12T18:14:10Zoai:ojs.pkp.sfu.ca:article/1935Revistahttp://www.ufsm.br/cienciaflorestal/ONGhttps://old.scielo.br/oai/scielo-oai.php||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br1980-50980103-9954opendoar:2017-05-12T18:14:10Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)false
dc.title.none.fl_str_mv WOOD BASIC DENSITY EFFECT OF Eucalyptus grandis x Eucalyptus urophylla CLONES ON BLEACHED PULP QUALITY
Influência da densidade básica da madeira de clones de Eucalyptus grandis x Eucalyptus urophylla na qualidade da polpa branqueada.
title WOOD BASIC DENSITY EFFECT OF Eucalyptus grandis x Eucalyptus urophylla CLONES ON BLEACHED PULP QUALITY
spellingShingle WOOD BASIC DENSITY EFFECT OF Eucalyptus grandis x Eucalyptus urophylla CLONES ON BLEACHED PULP QUALITY
Santos, Sheila Rodrigues dos
Basic density
Kraft pulping
clones
bleaching pulp properties.
Densidade básica
polpa Kraft
clones
propriedades da polpa branqueada
title_short WOOD BASIC DENSITY EFFECT OF Eucalyptus grandis x Eucalyptus urophylla CLONES ON BLEACHED PULP QUALITY
title_full WOOD BASIC DENSITY EFFECT OF Eucalyptus grandis x Eucalyptus urophylla CLONES ON BLEACHED PULP QUALITY
title_fullStr WOOD BASIC DENSITY EFFECT OF Eucalyptus grandis x Eucalyptus urophylla CLONES ON BLEACHED PULP QUALITY
title_full_unstemmed WOOD BASIC DENSITY EFFECT OF Eucalyptus grandis x Eucalyptus urophylla CLONES ON BLEACHED PULP QUALITY
title_sort WOOD BASIC DENSITY EFFECT OF Eucalyptus grandis x Eucalyptus urophylla CLONES ON BLEACHED PULP QUALITY
author Santos, Sheila Rodrigues dos
author_facet Santos, Sheila Rodrigues dos
Sansígolo, Cláudio Angeli
author_role author
author2 Sansígolo, Cláudio Angeli
author2_role author
dc.contributor.author.fl_str_mv Santos, Sheila Rodrigues dos
Sansígolo, Cláudio Angeli
dc.subject.por.fl_str_mv Basic density
Kraft pulping
clones
bleaching pulp properties.
Densidade básica
polpa Kraft
clones
propriedades da polpa branqueada
topic Basic density
Kraft pulping
clones
bleaching pulp properties.
Densidade básica
polpa Kraft
clones
propriedades da polpa branqueada
description The study analyzed the wood basic density effect in two Eucalyptus grandis x Eucalyptus urophylla hybrid clones (440 kg/m3 e 508 kg/m3) on bleached pulp quality (fiber dimensions and physical-mechanical properties). The woods performance on pulping, bleaching and beating results were analyzed. The Kraft pulping was carried out in forced circulation digester in order to obtain 17±1 kappa number targets. The pulps were bleached to 90±1 using delignification oxygen and D0EOPD1 bleaching sequence. Bleached pulp of low basic density clone showed, significantly, lowest revolutions number in the PFI mill to reach tensile index of 70 N.m/g, low Schopper Riegler degree and generated sheets with higher values to bulk and opacity. These characteristics and properties allow concluding that bleached pulp of low basic density clone was the most indicated to produce printing and writing sheets. The bleached pulp of high basic density clone showed higher values of bulk and capillarity Klemm and lower water retention value when analyzed without beating. The bleached pulp of high basic density clone showed more favorable characteristics to the production of tissue papers.
publishDate 2007
dc.date.none.fl_str_mv 2007-03-30
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.ufsm.br/cienciaflorestal/article/view/1935
10.5902/198050981935
url https://periodicos.ufsm.br/cienciaflorestal/article/view/1935
identifier_str_mv 10.5902/198050981935
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.ufsm.br/cienciaflorestal/article/view/1935/1177
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.publisher.none.fl_str_mv Universidade Federal de Santa Maria
publisher.none.fl_str_mv Universidade Federal de Santa Maria
dc.source.none.fl_str_mv Ciência Florestal; Vol. 17 No. 1 (2007); 53-63
Ciência Florestal; v. 17 n. 1 (2007); 53-63
1980-5098
0103-9954
reponame:Ciência Florestal (Online)
instname:Universidade Federal de Santa Maria (UFSM)
instacron:UFSM
instname_str Universidade Federal de Santa Maria (UFSM)
instacron_str UFSM
institution UFSM
reponame_str Ciência Florestal (Online)
collection Ciência Florestal (Online)
repository.name.fl_str_mv Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)
repository.mail.fl_str_mv ||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br
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