Flocculation efficiency of chitosans for papermaking applications

Bio-polymers have a large interest as environment-friendly alternatives to synthetic additives in papermaking. In this work, the behavior of three chitosans with different molecular weights and cationic charges were investigated as flocculation additives in papermaking on two systems: calcium carbon...

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Detalles Bibliográficos
Autores: Nicu, Raluca, Bobu, Elena, Miranda Carreño, Rubén, Blanco Suárez, María Ángeles
Tipo de recurso: artículo
Fecha de publicación:2013
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/44318
Acceso en línea:https://hdl.handle.net/20.500.14352/44318
Access Level:acceso abierto
Palabra clave:676
66
Flocculation
Chitosan
Wet end additive
FBRM
Molecular weight
Charge density
Industria del papel
Ingeniería química
Medio ambiente
Química industrial
3312.13 Tecnología de la Madera
3303 Ingeniería y Tecnología Químicas
2391 Química Ambiental
id ES_2b71dfc1a2de6d7155b01deeab7543a5
oai_identifier_str oai:docta.ucm.es:20.500.14352/44318
network_acronym_str ES
network_name_str España
repository_id_str
spelling Flocculation efficiency of chitosans for papermaking applicationsNicu, RalucaBobu, ElenaMiranda Carreño, RubénBlanco Suárez, María Ángeles67666FlocculationChitosanWet end additiveFBRMMolecular weightCharge densityIndustria del papelIngeniería químicaMedio ambienteQuímica industrial3312.13 Tecnología de la Madera3303 Ingeniería y Tecnología Químicas2391 Química AmbientalBio-polymers have a large interest as environment-friendly alternatives to synthetic additives in papermaking. In this work, the behavior of three chitosans with different molecular weights and cationic charges were investigated as flocculation additives in papermaking on two systems: calcium carbonate (GCC) and pulp/GCC suspension. Comparison was made with two traditional cationic polymers used in wet end chemistry (poly-diallyldimethyl-ammonium chloride (PDADMAC) and poly-ethylene imine (PEI)). Flocculation efficiency was evaluated by flocculation parameters (mean floc size and number of counts) and by floc behavior under shear conditions, using a focused beam reflectance measurement (FBRM) technique. Results indicated different behaviors between the three chitosans when they were used for the flocculation of GCC and pulp/GCC suspensions. Chitosans were found to be more efficient over PDADMAC and PEI for flocculating small particles of the GCC suspension, but less efficient for increasing floc sizes, regardless of their MW or CCD. Flocculation parameters for pulp/GCC suspensions suggested the flocculation behavior of chitosan was close to that of PEI, but chitosan had higher efficiency and affinity towards cellulose fibersNC State UniversityUniversidad Complutense de Madrid20132013-01-0120132013-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/44318reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/443182026-06-02T12:44:21Z
dc.title.none.fl_str_mv Flocculation efficiency of chitosans for papermaking applications
title Flocculation efficiency of chitosans for papermaking applications
spellingShingle Flocculation efficiency of chitosans for papermaking applications
Nicu, Raluca
676
66
Flocculation
Chitosan
Wet end additive
FBRM
Molecular weight
Charge density
Industria del papel
Ingeniería química
Medio ambiente
Química industrial
3312.13 Tecnología de la Madera
3303 Ingeniería y Tecnología Químicas
2391 Química Ambiental
title_short Flocculation efficiency of chitosans for papermaking applications
title_full Flocculation efficiency of chitosans for papermaking applications
title_fullStr Flocculation efficiency of chitosans for papermaking applications
title_full_unstemmed Flocculation efficiency of chitosans for papermaking applications
title_sort Flocculation efficiency of chitosans for papermaking applications
dc.creator.none.fl_str_mv Nicu, Raluca
Bobu, Elena
Miranda Carreño, Rubén
Blanco Suárez, María Ángeles
author Nicu, Raluca
author_facet Nicu, Raluca
Bobu, Elena
Miranda Carreño, Rubén
Blanco Suárez, María Ángeles
author_role author
author2 Bobu, Elena
Miranda Carreño, Rubén
Blanco Suárez, María Ángeles
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 676
66
Flocculation
Chitosan
Wet end additive
FBRM
Molecular weight
Charge density
Industria del papel
Ingeniería química
Medio ambiente
Química industrial
3312.13 Tecnología de la Madera
3303 Ingeniería y Tecnología Químicas
2391 Química Ambiental
topic 676
66
Flocculation
Chitosan
Wet end additive
FBRM
Molecular weight
Charge density
Industria del papel
Ingeniería química
Medio ambiente
Química industrial
3312.13 Tecnología de la Madera
3303 Ingeniería y Tecnología Químicas
2391 Química Ambiental
description Bio-polymers have a large interest as environment-friendly alternatives to synthetic additives in papermaking. In this work, the behavior of three chitosans with different molecular weights and cationic charges were investigated as flocculation additives in papermaking on two systems: calcium carbonate (GCC) and pulp/GCC suspension. Comparison was made with two traditional cationic polymers used in wet end chemistry (poly-diallyldimethyl-ammonium chloride (PDADMAC) and poly-ethylene imine (PEI)). Flocculation efficiency was evaluated by flocculation parameters (mean floc size and number of counts) and by floc behavior under shear conditions, using a focused beam reflectance measurement (FBRM) technique. Results indicated different behaviors between the three chitosans when they were used for the flocculation of GCC and pulp/GCC suspensions. Chitosans were found to be more efficient over PDADMAC and PEI for flocculating small particles of the GCC suspension, but less efficient for increasing floc sizes, regardless of their MW or CCD. Flocculation parameters for pulp/GCC suspensions suggested the flocculation behavior of chitosan was close to that of PEI, but chitosan had higher efficiency and affinity towards cellulose fibers
publishDate 2013
dc.date.none.fl_str_mv 2013
2013-01-01
2013
2013-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/44318
url https://hdl.handle.net/20.500.14352/44318
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv NC State University
publisher.none.fl_str_mv NC State University
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869405144859279360
score 15,300719

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