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Application of Polysaccharide Hydrogels in Adsorption and Controlled-Extended Release of Fertilizers Processes

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dc.contributor.authorBortolin, Adriel
dc.contributor.authorAouada, Fauze Ahmad [UNESP]
dc.contributor.authorMoura, Marcia R. de
dc.contributor.authorRibeiro, Caue
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorMattoso, Luiz H. C.
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T15:31:53Z
dc.date.available2014-05-20T15:31:53Z
dc.date.issued2012-02-15
dc.description.abstractThis article studied the applicability of poly(acrylamide) and methylcellulose (PAAm-MC) hydrogels as potential delivery vehicle for the controlled-extended release of ammonium sulfate (NH(4))(2)SO(4) and potassium phosphate (KH(2)PO(4)) fertilizers. PAAm-MC hydrogels with different acrylamide (AAm) and MC concentrations were prepared by a free radical polymerization method. The adsorption and desorption kinetics of fertilizers were determined using conductivity measurements based on previously built analytical curve. The addition of MC in the PAAm chains increased the quantities of (NH(4))(2)SO(4) and KH(2)PO(4) loaded and extended the time and quantities of fertilizers released. Coherently, both loading and releasing processes were strongly influenced by hydrophilic properties of hydrogels (AAm/MC mass proportion). The best sorption (124.0 mg KH(2)PO(4)/g hydrogel and 58.0 mg (NH(4))(2)SO(4)/g hydrogel) and desorption (54.9 mg KH(2)PO(4)/g hydrogel and 49.5 mg (NH(4))(2)SO(4)/g hydrogel) properties were observed for 6.0% AAm-1.0% MC hydrogels (AAm/MC mass proportion equal 6), indicating that these hydrogels are potentially viable to be used in controlled-extended release of fertilizers systems. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 123: 2291-2298, 2012en
dc.description.affiliationUniversidade Federal de São Carlos (UFSCar), Dept Chem, BR-13565905 São Carlos, SP, Brazil
dc.description.affiliationEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA) Agr Instrumentat, CNPDIA, LNNA, Natl Nanotechnol Lab Agr, BR-13560905 São Carlos, SP, Brazil
dc.description.affiliationSão Paulo State Univ, Inst Chem, Araraquara, SP, Brazil
dc.description.affiliationUniv São Paulo, Inst Phys, BR-13560970 São Carlos, SP, Brazil
dc.description.affiliationUnespSão Paulo State Univ, Inst Chem, Araraquara, SP, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.description.sponsorshipFinanciadora de Estudos e Projetos (FINEP)
dc.format.extent2291-2298
dc.identifierhttp://dx.doi.org/10.1002/app.34742
dc.identifier.citationJournal of Applied Polymer Science. Malden: Wiley-blackwell, v. 123, n. 4, p. 2291-2298, 2012.
dc.identifier.doi10.1002/app.34742
dc.identifier.issn0021-8995
dc.identifier.lattes8251270609012225
dc.identifier.orcid0000-0002-6870-6961
dc.identifier.urihttp://hdl.handle.net/11449/40905
dc.identifier.wosWOS:000297932300048
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofJournal of Applied Polymer Science
dc.relation.ispartofjcr1.901
dc.relation.ispartofsjr0,543
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectadsorptionen
dc.subjectconductimetric measurementsen
dc.subjectcontrolled-extended release of fertilizersen
dc.subjectpolysaccharide hydrogelsen
dc.subjectswelling degreeen
dc.titleApplication of Polysaccharide Hydrogels in Adsorption and Controlled-Extended Release of Fertilizers Processesen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-blackwell
dspace.entity.typePublication
unesp.author.lattes8251270609012225[2]
unesp.author.orcid0000-0002-6870-6961[2]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Engenharia, Ilha Solteirapt
unesp.departmentFísica e Química - FEISpt
unesp.departmentBioquímica e Tecnologia - IQpt

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Coleções

Ilha Solteira - FEIS - Faculdade de Engenharia
Araraquara - IQAR - Instituto de Química