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Article Dans Une Revue Cellulose Année : 2021

Development of an integrated process to produce CNFs and lignin and its potential applications for agrochemical delivery

Diego Do Nascimento
  • Fonction : Auteur
Yana Nunes
  • Fonction : Auteur
Jéssica de Almeida
  • Fonction : Auteur
Renato Carrhá Leitão
  • Fonction : Auteur
Judith Feitosa
  • Fonction : Auteur
Morsyleide de Freitas Rosa

Résumé

This work aimed to study the use of cellulose nanofibers (CNFs) from coir husk fibers to develop nanocomposite hydrogels. Cellulose and lignin were obtained from coir husk using the steam explosion pretreatment, followed by alkaline-ethanol-water pretreatment and bleaching process. CNFs from coir husk fibers were obtained using a high-speed blender on cellulose pulp previously oxidized with 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO). Poly(N,N-dimethylacrylamide) (PDMA) was used as a matrix material to produce novel nanocomposite hydrogels reinforced with CNFs by a facile synthesis method. The compression modulus of PDMA/CNF hydrogels increased significantly when compared to PDMA hydrogel. The water-retention and nitrogen (N), phosphorous (P), and potassium (K) (NPK) fertilizer release studies indicated that the addition of CNFs considerably improved the water-retention capacity but reduced the nutrient loading capacity of the hydrogel. All the prepared nanocomposite hydrogels had significantly improved mechanical performance. Our study provides a facile and green route to produce CNFs and lignin. Furthermore, nanocomposite hydrogels with tunable properties for potential agriculture applications were prepared by homogeneously dispersing cellulose nanoparticles in PDMA.
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Dates et versions

hal-04099780 , version 1 (17-05-2023)

Identifiants

Citer

Diego Do Nascimento, Yana Nunes, Jéssica de Almeida, Renato Carrhá Leitão, Judith Feitosa, et al.. Development of an integrated process to produce CNFs and lignin and its potential applications for agrochemical delivery. Cellulose, 2021, 28 (17), pp.10891-10904. ⟨10.1007/s10570-021-04200-2⟩. ⟨hal-04099780⟩

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