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Novel alginate-cellulose nanofiber-poly(vinyl alcohol) hydrogels for carrying and delivering nitrogen, phosphorus and potassium chemicals.
Liu, Shiliang; Wu, Qinglin; Sun, Xiuxuan; Yue, Yiying; Tubana, Brenda; Yang, Rongjie; Cheng, Huai N.
Afiliação
  • Liu S; College of Landscape Architecture, Sichuan Agricultural University, Chengdu, Sichuan 611130, China; School of Renewable Natural Resources, Louisiana State University Agricultural Center, Baton Rouge, Louisiana 70803, United States. Electronic address: liushiliang9@163.com.
  • Wu Q; School of Renewable Natural Resources, Louisiana State University Agricultural Center, Baton Rouge, Louisiana 70803, United States. Electronic address: qwu@agcenter.lsu.edu.
  • Sun X; School of Renewable Natural Resources, Louisiana State University Agricultural Center, Baton Rouge, Louisiana 70803, United States.
  • Yue Y; College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China.
  • Tubana B; School of Plant, Environmental, and Soil Sciences, Louisiana State University Agricultural Center, Baton Rouge, LA 70803, United States.
  • Yang R; College of Landscape Architecture, Sichuan Agricultural University, Chengdu, Sichuan 611130, China.
  • Cheng HN; Southern Regional Research Center, USDA Agriculture Research Service, New Orleans, LA 70124, United States.
Int J Biol Macromol ; 172: 330-340, 2021 Mar 01.
Article em En | MEDLINE | ID: mdl-33453256
Novel nanocomposite hydrogels were successfully prepared by blending and crosslinking sodium alginate (SA), poly(vinyl alcohol) (PVA) and cellulose nanofibers (CNFs) in the presence of a fertilizer formulation containing nitrogen (N), phosphorus (P) and potassium (K). The hydrogels had a macroporous flexible core and a microporous semi- interpenetrating polymer network (IPN) shell. The crystalline nature of the NPK chemicals was retained in the hydrogel nanocomposite network. Furthermore, the SA/CNF/PVA-based hydrogels showed a higher water-retention capacity in both deionized water and mixed soil. The swelling behavior in various physiological pH, salt and alkali solutions exhibited good sensitivity. The NPK release from SA/CNF/NPK and SA/CNF/PVA/NPK hydrogels was controlled by Fickian diffusion in both water and soil based on the Korsmeyer-Peppas release kinetics model (n < 0.5). Therefore, the prepared hydrogels have the potential for applications in drought-prone and/or fertilizer-loss regions for future development of precision agriculture and horticulture.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Fósforo / Álcool de Polivinil / Potássio / Preparações de Ação Retardada / Alginatos / Nanofibras / Nitrogênio Idioma: En Revista: Int J Biol Macromol Ano de publicação: 2021 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Fósforo / Álcool de Polivinil / Potássio / Preparações de Ação Retardada / Alginatos / Nanofibras / Nitrogênio Idioma: En Revista: Int J Biol Macromol Ano de publicação: 2021 Tipo de documento: Article