Author:
Mohamed Riham R.,Fahim Marie E.,Soliman Soliman M. A.
Abstract
AbstractA novel Carboxymethyl cellulose (CMC) and poly (4-vinylpyridine) (P4VP) hydrogel system is synthesized with different ratios, in the presence of cross-linker N, N,- methylene bis-acrylamide (MBA). The hydrogel is characterized via FTIR spectroscopy, thermal gravimetric analysis (TGA), X-ray diffraction (XRD), and scanning electron microscope (SEM). The FTIR results showed a strong interaction between both CMC, P4VP and the loaded fertilizer. The water uptake of the hydrogel was evaluated by swelling tests under variations in pH, biodegradability was investigated in soil to simulate real-world conditions. To determine the best release behavior of urea and calcium nitrate from the hydrogel, fertilizers were loaded with different ratios onto the hydrogel during its formation. Fertilizers release was followed by Atomic absorption spectroscopy to study the release of calcium nitrate and urea. Release kinetic parameters were obtained based on different mathematical models as Zero order, First order, Korsmeyer–Peppas and Higuchi models. The suitable proportionality between the mathematical models used and the fertilizers release was determined based on the correlation coefficients (R2). According to Zero order model urea release showed independent concentration. Based on Korsmeyer-Pappas and Higuchi models with high n value and R2 equals to 0.97. Compared to urea, Ca2+, Zero order and Higuchi have been ignored due to their poor correlation coefficients values as proportion with Ca2+ fertilizer release.
Publisher
Springer Science and Business Media LLC
Reference61 articles.
1. Sunardi, Febriani NM, Junaidi AB. Preparation of carboxymethyl cellulose produced from puruntikus (Eleocharisdulcis). AIP Conf Proc. 2017;1868:020008
2. Sunardi WT, Istikowati DIS. Extraction of α-cellulose from eleocharis dulcis holocellulose using NaOH and KOH. J Phys Conf Ser. 2019;1397:012031.
3. Li Y, Li G, Zou Y, Zhou Q, Lian X. Enhancement of the fermentation process and properties of bacterial cellulose. Cellulose. 2014;21:301–9.
4. Xu Y, Salmi J, Kloser E, Perrin F, Grosse S, Denault J. Co-Production of cellulose nanocrystals and fermentable sugars assisted by endoglucanase treatment of wood Pulp. Ind Crops Prod. 2013;51:381–4.
5. Abdulhameed A, Mbuvi HM, Changamu EO, Maingi FM. Microwave synthesis of carboxymethylcellulose (CMC) from Rice Husk. J Appl Chem. 2019;12:2278–5736.
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