Arabic gum-based composite hydrogels reinforced with eucalyptus and pinus residues for controlled phosphorus release

Autor(es)

de Souza, Alana G. ^[1] ; Cesco, Cassiele T. ^[2] ; de Lima, Giovanni F. ^[1] ; Artifon, Samantha E. S. ^[2] ; Rosa, Derval dos S. ^[1] ; Paulino, Alexandre T. ^[2]

Afiliação do(s) autor(es)

^[1] Fed Univ ABC, Engn Modeling & Appl Social Sci Ctr CECS, Ave Estados 5001, BR-09210580 Santo Andre, SP - Brazil

^[2] Santa Catarina State Univ, Dept Food & Chem Engn, Br 282, Km 574, BR-89870000 Pinhalzinho, SC - Brazil

• Tipo de documento: Artigo Científico
• Fonte: International Journal of Biological Macromolecules; v. 140, p. 33-42, NOV 1 2019.
• Citações Web of Science: 3

Resumo

Arabic gum-based composite hydrogels reinforced with eucalyptus and pinus residues were synthesized via free-radical reaction aiming to controlled phosphorus release. All hydrogels were characterized by swelling kinetics (SK), Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), X-Ray diffraction (XRD), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and mechanical assays (MA). The water and solute transports through the hydrophilic three-dimensional networks of the hydrogels occur preferably by diffusion processes and macromolecular relaxation. Hemicellulose, lignin and cellulose fibers contained in eucalyptus and pinus residues affected the crosslinking density, crystalline structure, and water/solute diffusion due to reduction of free hydroxyl and amine groups in the hydrogel networks. Hence, the eucalyptus and pinus residues improved the mechanical and thermal resistances of the composite hydrogels. Finally, the Arabic gum-based hydrogel and Arabic gum-based composite hydrogels reinforced with eucalyptus and pinus residues demonstrated to be excellent alternatives for the controlled phosphorus release in agricultural nutrient-poor soils. (C) 2019 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 18/11277-7 - Filmes de PBAT com nanoestruturas de celulose tratadas com óleos essenciais encapsulados para embalagens ativas
• Beneficiário: Derval dos Santos Rosa
• Modalidade de apoio: Auxílio à Pesquisa - Regular