Polymethyl methacrylate-g-carboxy-methylcellulose as an amphiphilic coating material for slow-release fertilizer

In the perspective of preparing coating material of water-soluble fertilizer with controlled and slow-release property, polymethyl methacrylate (PMMA) was grafted from carboxymethyl cellulose (CMC) through in-situ polymerization using potassium persulfate (KPS) as initiator. The prepared copolymers...

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Bibliographic Details
Published in:Progress in organic coatings 2022-11, Vol.172, p.107102, Article 107102
Main Authors: Boutriouia, El Hassan, El Assimi, Taha, Raihane, Mustapha, Beniazza, Redouane, Youcef, Hicham Ben, Khouloud, Mehdi, Baouab, Mohamed Hassen V., El Kadib, Abdelkrim, Lahcini, Mohammed
Format: Article
Language:English
Subjects:
Biodegradation
Carboxymethyl cellulose
Coating
Copolymers
Fertilizers
Infrared analysis
Light diffraction
Nanomaterials
Photon correlation spectroscopy
Polymethyl methacrylate
Potassium persulfate
Size exclusion chromatography
Soil water
Tensile tests
Thermogravimetric analysis
Thickness
Water chemistry
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Summary:In the perspective of preparing coating material of water-soluble fertilizer with controlled and slow-release property, polymethyl methacrylate (PMMA) was grafted from carboxymethyl cellulose (CMC) through in-situ polymerization using potassium persulfate (KPS) as initiator. The prepared copolymers (PMMA-g-CMC) were fully characterized using Transform Infrared Spectroscopy (FTIR), Thermogravimetric analysis (TGA), Differential Scanning Calorimetry (DSC), Dynamic light scattering (DLS), X-Ray diffraction (XRD), Brunauer Emmett Teller (BET), Scanning electron microscopy (SEM) and mechanical tensile testing. The molecular weight (Mn) was also evaluated using the size exclusion chromatography (SEC). Next, conventional water-soluble diammonium phosphate (DAP) fertilizer was coated by the prepared copolymers using laboratory rotary drum. The coating effectiveness was evaluated in terms of its uniformity and thickness. The successfully coated nanomaterials significantly delay the release rate of nitrogen (N) and phosphorus (P) in water and soil, compared to their release using uncoated fertilizers. Finally, aerobic biodegradation of the coating agent was also demonstrated.
ISSN:0300-9440
1873-331X
DOI:10.1016/j.porgcoat.2022.107102