dc.creator | Area, Maria Cristina | |
dc.creator | Felissia, Fernando Esteban | |
dc.creator | Carvalho, M. Graça V. S. | |
dc.creator | Ferreira, Paulo J. | |
dc.creator | Barboza, Olga M. | |
dc.creator | Bengoechea, Dora Inés | |
dc.date.accessioned | 2018-04-23T22:40:56Z | |
dc.date.accessioned | 2018-11-06T11:45:19Z | |
dc.date.available | 2018-04-23T22:40:56Z | |
dc.date.available | 2018-11-06T11:45:19Z | |
dc.date.created | 2018-04-23T22:40:56Z | |
dc.date.issued | 2011-05 | |
dc.identifier | Area, Maria Cristina; Felissia, Fernando Esteban; Carvalho, M. Graça V. S.; Ferreira, Paulo J.; Barboza, Olga M.; et al.; Characterization of eucalyptus grandis kraft pulps treated with phosphonates in different stages of TCF bleaching; North Carolina State University. Department of Wood and Paper Science; Bioresources; 6; 2; 5-2011; 2077-2090 | |
dc.identifier | 1930-2126 | |
dc.identifier | http://hdl.handle.net/11336/43205 | |
dc.identifier | 1930-2126 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1859124 | |
dc.description.abstract | The addition of a phosphonated chelant (DTPMPA) at different points of a TCF bleaching sequence and its effect on pulp properties were studied in this work. An industrial Eucalyptus grandis kraft pulp was submitted to a counter-ion exchange (Ca2+ or Na+ form) and was then bleached using DTPMPA in the washing or in the bleaching stages of two distinct sequences: OOpP and OQOpP (20 pulps). The counter-ion exchange affected fibre length, as well as the handsheets bulk and air permeability (higher for Na+-based pulps) and handsheet tensile strength, brightness, skeletal density, and total porosity based on Hg porosimetry (higher for Ca2+-based pulps). The hydrogen peroxide consumption in Op and P stages achieved the lowest values when the chelant was distributed rather than applied in a separate Q stage. The addition of chelant in the P stage provides pulps with higher ISO brightness (>85%). The chelant effects were always more noticeable in Ca2+-based pulps. | |
dc.language | eng | |
dc.publisher | North Carolina State University. Department of Wood and Paper Science | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_06_2_2077_Area_FCFBB_Eucalypt_Phosphonates_Kraft_TCF | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/openAccess | |
dc.subject | CHELATING AGENT | |
dc.subject | EUCALYPTUS | |
dc.subject | KRAFT PULP | |
dc.subject | PHOSPHONATES | |
dc.subject | TCF BLEACHING | |
dc.title | Characterization of eucalyptus grandis kraft pulps treated with phosphonates in different stages of TCF bleaching | |
dc.type | Artículos de revistas | |
dc.type | Artículos de revistas | |
dc.type | Artículos de revistas | |