Waterborne butyl methacrylate (co)polymers prepared by pickering emulsion polymerization: Insight of their use as coating materials for slow release-fertilizers

Sofyane, Asma; Ayed, Emna Ben; Lahcini, Mohammed; Khouloud, Mehdi; Kaddami, Hamid; Améduri, Bruno; Boufi, Sami; Raihane, Mustapha

doi:10.1016/j.eurpolymj.2021.110598

Cited by 9 publications

(5 citation statements)

References 68 publications

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“…В оптимизированных условиях с применение ОППк нами получен коагулюм каучука СКС-30 АРК. Согласно требованиям ГОСТ Р 54554-2011 проведены исследования физико-механических показателей вулканизатов [13][14][15][16][17][18][19][20], полученных на его основе (таблица 4).…”

Section: результатыunclassified

Waste of brewing production - a coagulating agent in the technology of extraction of emulsion rubbers from latex

Sannikova,

Vlasova,

Nechesova

et al. 2022

Vestn. Voronež. gos. univ. inž. tehnol.

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Today, there is a growing interest in the production of synthetic polymers, which are widely used in the production of modern materials. Of particular interest is the manufacture of rubbers by emulsion polymerization. Rubber compounds and vulcanizates made on their basis have characteristics due to which they are actively used in various industrial sectors. The coagulation process in the production of emulsion polymers increases environmental stress. Sodium chloride used at some enterprises as a coagulating agent is consumed in large quantities - up to 200 kg / t of rubber, and increases environmental pollution. In the presented work, for the first time, the possibility of recycling the beer production residue - inactivated yeast, which is proposed to be used to reduce the aggregative stability of disperse systems, is considered. The introduction of yeast into the emulsion polymer isolation technology makes it possible to reduce the amount of sodium chloride in the waters discharged from the enterprise. The use of a system based on a protein coagulant contributes to the complete release of coagulum from latex at a consumption of inactivated yeast in the amount of 10-15 kg/t of rubber. The most effective results were obtained when yeast preliminarily acidified with sulfuric acid was used in this process, which led to the charging of the nitrogen atom of the protein component. It is noted that the best temperature regime for the process of coagulation of latex particles is 1-20 ℃. An increase in temperature to 60 ℃ leads to an increase in the consumption of coagulant up to 25 kg/t of rubber. The ratios of the consumption of sulfuric acid and acidified yeast have been optimized, allowing to obtain the most complete coagulation of the latex. It has been established that the rubbers isolated using food production waste meet the requirements for rubbers of the SKS-30ARK brand according to the main physical and mechanical indicators.

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Section: результатыunclassified

Waste of brewing production - a coagulating agent in the technology of extraction of emulsion rubbers from latex

Sannikova,

Vlasova,

Nechesova

et al. 2022

Vestn. Voronež. gos. univ. inž. tehnol.

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“…With the progression of society and the growth of population, the cultivated land area continues to decrease, and the shortage of agricultural water resources is obvious in most areas. It is urgent to improve crop yield to meet the needs of human survival. − Agricultural advances in recent decades have led to the use of a variety of fertilizers to ensure crop growth . However, the extensive use of fertilizers has caused numerous environmental problems. − When the fertilizer is applied to the plants, the part that is not absorbed by the corps can easily percolate through the gaps in the soil, resulting in the pollution of underground water sources and eutrophication of water bodies, leading to the formation of chemicals that can no longer be absorbed by plants, resulting in the loss of nutrients. − Therefore, it is necessary to use slow-release fertilizers to delay the release cycle, ensuring the crop yield and reducing the harm to the environment , …”

Section: Introductionmentioning

confidence: 99%

Preparation of Hypromellose-Graft-Polyacrylic Acid Superabsorbent Resin by Ultraviolet Polymerization and Its Slow-Release Performance

Zhu,

Sawut,

Simayi

et al. 2024

ACS Appl. Polym. Mater.

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A hypromellose-graft-poly(acrylic acid) (HPMC-g-PAA) superabsorbent resin was synthesized through the graft polymerization of hydroxypropyl methylcellulose and acrylic acid in an aqueous solution by UV polymerization, with the addition of an initiator and cross-linking agent. Additionally, the HPMC-g-PAA/urea composite was synthesized by using a one-pot method to create a slow-release fertilizer by incorporating urea into the structure of superabsorbent materials. The structures of HPMC-g-PAA and HPMC-g-PAA/urea were characterized by FTIR, TGA and SEM. The effects of preparation conditions such as UV exposure time, HPMC content, neutralization degree, initiator amount, amount of cross-linking agent, and urea content on the water absorption capacity of the superabsorbent polymers were evaluated. Under optimal conditions, the HPMC-g-PAA exhibited a maximum absorption capacity of 1567 g/g in distilled water and 88.5 g/g in NaCl solution (0.9 wt %). Similarly, the HPMC-g-PAA/urea demonstrated a maximum absorption capacity of 1382 g/g in distilled water and 82.3 g/g in NaCl solution (0.9 wt %). The comprehensive investigation encompassed the assessment of slow-release and water-retention properties, as well as a growth experiment conducted on the samples. The slow-release period of sample reached 93% at the 26th hour. The obtained results unequivocally validate the effectiveness of the synthesized superabsorbent resin and slow-release fertilizer in significantly enhancing plant growth.

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“…23–25 Without further functionalization, the polysaccharide starch/dextrin is already being used e.g. as filler, 5 as a surfactant, 26–28 in higher concentrations as a thickener, 29–31 or dyed with a pigment. 32…”

Section: Introductionmentioning

confidence: 99%

“…[23][24][25] Without further functionalization, the polysaccharide starch/dextrin is already being used e.g. as filler, 5 as a surfactant, [26][27][28] in higher concentrations as a thickener, [29][30][31] or dyed with a pigment. 32 In order to make use of polysaccharides as (co-)binders in combination with ADH as a crosslinker, crosslinking handles need to be installed.…”

Section: Introductionmentioning

confidence: 99%

Regioselective palladium-catalysed aerobic oxidation of dextran and its use as a bio-based binder in paperboard coatings

Maßmann,

Metselaar,

van Dijken

et al. 2024

Green Chem.

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Waterborne butyl methacrylate (co)polymers prepared by pickering emulsion polymerization: Insight of their use as coating materials for slow release-fertilizers

Cited by 9 publications

References 68 publications

Waste of brewing production - a coagulating agent in the technology of extraction of emulsion rubbers from latex

Waste of brewing production - a coagulating agent in the technology of extraction of emulsion rubbers from latex

Preparation of Hypromellose-Graft-Polyacrylic Acid Superabsorbent Resin by Ultraviolet Polymerization and Its Slow-Release Performance

Regioselective palladium-catalysed aerobic oxidation of dextran and its use as a bio-based binder in paperboard coatings

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