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Tuan HNA, Phan BTC, Giang HN, Nguyen GT, Le TDH, Phuong H. Impact of Modifications from Potassium Hydroxide on Porous Semi-IPN Hydrogel Properties and Its Application in Cultivation. Polymers (Basel) 2024; 16:1195. [PMID: 38732665 PMCID: PMC11085908 DOI: 10.3390/polym16091195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 04/18/2024] [Accepted: 04/19/2024] [Indexed: 05/13/2024] Open
Abstract
This study synthesized and modified a semi-interpenetrating polymer network hydrogel from polyacrylamide, N,N'-dimethylacrylamide, and maleic acid in a potassium hydroxide solution. The chemical composition, interior morphology, thermal properties, mechanical characteristics, and swelling behaviors of the initial hydrogel (SH) and modified hydrogel (SB) in water, salt solutions, and buffer solutions were investigated. Hydrogels were used as phosphate fertilizer (PF) carriers and applied in farming techniques by evaluating their impact on soil properties and the growth of mustard greens. Fourier-transform infrared spectra confirmed the chemical composition of SH, SB, and PF-adsorbed hydrogels. Scanning electron microscopy images revealed that modification increased the largest pore size from 817 to 1513 µm for SH and SB hydrogels, respectively. After modification, the hydrogels had positive changes in the swelling ratio, swelling kinetics, thermal properties, mechanical and rheological properties, PF absorption, and PF release. The modification also increased the maximum amount of PF loaded into the hydrogel from 710.8 mg/g to 770.9 mg/g, while the maximum % release of PF slightly increased from 84.42% to 85.80%. In addition, to evaluate the PF release mechanism and the factors that influence this process, four kinetic models were applied to confirm the best-fit model, which included zero-order, first-order, Higuchi, and Korsmeyer-Peppas. In addition, after six cycles of absorption and release in the soil, the hydrogels retained their original shapes, causing no alkalinization or acidification. At the same time, the moisture content was higher as SB was used. Finally, modifying the hydrogel increased the mustard greens' lifespan from 20 to 32 days. These results showed the potential applications of modified semi-IPN hydrogel materials in cultivation.
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Affiliation(s)
- Huynh Nguyen Anh Tuan
- Faculty of Chemical and Food Technology, Ho Chi Minh City University of Technology and Education, No. 1, Vo Van Ngan Street, Linh Chieu Ward, Thu Duc, Ho Chi Minh City 71307, Vietnam; (B.T.C.P.); (G.T.N.); (T.D.H.L.); (H.P.)
| | - Bui Thi Cam Phan
- Faculty of Chemical and Food Technology, Ho Chi Minh City University of Technology and Education, No. 1, Vo Van Ngan Street, Linh Chieu Ward, Thu Duc, Ho Chi Minh City 71307, Vietnam; (B.T.C.P.); (G.T.N.); (T.D.H.L.); (H.P.)
| | - Ha Ngoc Giang
- Faculty of Chemical Technology, Ho Chi Minh City University of Industry and Trade, No. 140, Le Trong Tan Street, Tay Thanh Ward, Tan Phu District, Ho Chi Minh City 72009, Vietnam;
| | - Giang Tien Nguyen
- Faculty of Chemical and Food Technology, Ho Chi Minh City University of Technology and Education, No. 1, Vo Van Ngan Street, Linh Chieu Ward, Thu Duc, Ho Chi Minh City 71307, Vietnam; (B.T.C.P.); (G.T.N.); (T.D.H.L.); (H.P.)
| | - Thi Duy Hanh Le
- Faculty of Chemical and Food Technology, Ho Chi Minh City University of Technology and Education, No. 1, Vo Van Ngan Street, Linh Chieu Ward, Thu Duc, Ho Chi Minh City 71307, Vietnam; (B.T.C.P.); (G.T.N.); (T.D.H.L.); (H.P.)
| | - Ho Phuong
- Faculty of Chemical and Food Technology, Ho Chi Minh City University of Technology and Education, No. 1, Vo Van Ngan Street, Linh Chieu Ward, Thu Duc, Ho Chi Minh City 71307, Vietnam; (B.T.C.P.); (G.T.N.); (T.D.H.L.); (H.P.)
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Kaur J, Dudeja I, Chahal GK, Mankoo RK, Kaur R. Synthesis of xylan and lignin based hydrogels and their use as growth media for rice ( Oryza sativa). Nat Prod Res 2024:1-10. [PMID: 38433428 DOI: 10.1080/14786419.2024.2324463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Accepted: 02/23/2024] [Indexed: 03/05/2024]
Abstract
Different hydrogels were synthesised using lignin and xylan (extracted from rice straw) as the raw material, PVA as matrix template, citric acid, and succinic acid as crosslinkers and were structurally characterised by FT-IR and SEM analysis. Citric acid cross-linked hydrogels caused loose bonding between polymers and resulted in formation of large pores whereas succinic acid cross-linked hydrogels were observed to have less porosity and tight bonding network. The swelling ratio and reswelling capacity of hydrogels revealed that lignin hydrogels outperformed all other hydrogels. All the synthesised hydrogels were tested for their use as soil culture media ingredient for the germination of rice seedlings. All the hydrogels performed well in stress conditions as compared to normal conditions. Xylan/lignin hydrogel and lignin hydrogels performed best under stress conditions. These hydrogels could be used effectively as an ingredient of soil culture media owing to their tendency to absorb and retain water properly.
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Affiliation(s)
- Japanpreet Kaur
- Department of Chemistry, Punjab Agricultural University, Ludhiana, India
| | - Isha Dudeja
- Department of Chemistry, Punjab Agricultural University, Ludhiana, India
| | | | | | - Ramandeep Kaur
- Department of Chemistry, Punjab Agricultural University, Ludhiana, India
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de Luna Souto AG, de Melo EN, Cavalcante LF, do Nascimento APP, Cavalcante ÍHL, de Lima GS, Batista RO, Gheyi HR, de Fátima RT, de Mesquita EF, de Souza GLF, Silva GR, Silva DV, de Oliveira Mesquita F, de Oliveira PVC. Water-Retaining Polymer and Planting Pit Size on Chlorophyll Index, Gas Exchange and Yield of Sour Passion Fruit with Deficit Irrigation. PLANTS (BASEL, SWITZERLAND) 2024; 13:235. [PMID: 38256788 PMCID: PMC10820501 DOI: 10.3390/plants13020235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 12/31/2023] [Accepted: 01/11/2024] [Indexed: 01/24/2024]
Abstract
Water availability is a limiting factor for the cultivation of sour passion fruit. Soil management techniques and the use of water-retaining polymers can increase soil water retention, reducing the frequency of irrigation in the crop. In this context, the objective of the research was to evaluate the gas exchange, the chlorophyll index, and the yield of the sour passion fruit cv. BRS GA1 as a function of irrigation depths, pit volumes, and doses of water-retaining polymer. The experiment was carried out in randomized blocks, in plots subdivided in a 2 × (2 × 5) arrangement, with irrigation depths of 70 and 100% of the crop evapotranspiration (ETc) as the main plot, the subplots with the volumes of pit of 64 and 128 dm3, and doses of the water-retaining polymer of 0, 0.5, 1.0, 1.5, and 2.0 g dm-3. The interaction of irrigation depths × pit volumes × doses of water-retaining polymer influences chlorophyll indexes, gas exchange, and water productivity, with positive impacts on yield of the sour passion fruit. The water depth of 70% of ETc increased the yield of sour passion fruit, in pits of 64 dm3. The application of doses of up to 1.1 g dm-3 of the water-retaining polymer and irrigation with water of 70% of ETc is recommended, and a dose of 2.0 g dm-3 of the water-retaining polymer in a pit volume of 128 dm3, associated with an irrigation depth of 100% ETc causes stress in sour passion fruit plants due to excess water.
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Affiliation(s)
- Antônio Gustavo de Luna Souto
- Postgraduate Program in Soil and Water Management, Universidade Federal do Semiárido, Mossoró 59625900, RN, Brazil; (R.O.B.); (D.V.S.); (P.V.C.d.O.)
| | - Edinete Nunes de Melo
- Postgraduate Program in Agronomy, Universidade Federal da Paraíba, Areia 58397-000, PB, Brazil; (E.N.d.M.); (L.F.C.); (A.P.P.d.N.); (Í.H.d.L.C.); (G.L.F.d.S.); (G.R.S.)
| | - Lourival Ferreira Cavalcante
- Postgraduate Program in Agronomy, Universidade Federal da Paraíba, Areia 58397-000, PB, Brazil; (E.N.d.M.); (L.F.C.); (A.P.P.d.N.); (Í.H.d.L.C.); (G.L.F.d.S.); (G.R.S.)
| | - Ana Paula Pereira do Nascimento
- Postgraduate Program in Agronomy, Universidade Federal da Paraíba, Areia 58397-000, PB, Brazil; (E.N.d.M.); (L.F.C.); (A.P.P.d.N.); (Í.H.d.L.C.); (G.L.F.d.S.); (G.R.S.)
| | - Ítalo Herbert Lucena Cavalcante
- Postgraduate Program in Agronomy, Universidade Federal da Paraíba, Areia 58397-000, PB, Brazil; (E.N.d.M.); (L.F.C.); (A.P.P.d.N.); (Í.H.d.L.C.); (G.L.F.d.S.); (G.R.S.)
| | - Geovani Soares de Lima
- Postgraduate Program in Agricultural Engineering, Universidade Federal de Campina Grande, Campina Grande 58429900, PB, Brazil; (G.S.d.L.); (H.R.G.)
| | - Rafael Oliveira Batista
- Postgraduate Program in Soil and Water Management, Universidade Federal do Semiárido, Mossoró 59625900, RN, Brazil; (R.O.B.); (D.V.S.); (P.V.C.d.O.)
| | - Hans Raj Gheyi
- Postgraduate Program in Agricultural Engineering, Universidade Federal de Campina Grande, Campina Grande 58429900, PB, Brazil; (G.S.d.L.); (H.R.G.)
| | - Reynaldo Teodoro de Fátima
- Postgraduate Program in Agricultural Engineering, Universidade Federal de Campina Grande, Campina Grande 58429900, PB, Brazil; (G.S.d.L.); (H.R.G.)
| | | | - Gleyse Lopes Fernandes de Souza
- Postgraduate Program in Agronomy, Universidade Federal da Paraíba, Areia 58397-000, PB, Brazil; (E.N.d.M.); (L.F.C.); (A.P.P.d.N.); (Í.H.d.L.C.); (G.L.F.d.S.); (G.R.S.)
| | - Guilherme Romão Silva
- Postgraduate Program in Agronomy, Universidade Federal da Paraíba, Areia 58397-000, PB, Brazil; (E.N.d.M.); (L.F.C.); (A.P.P.d.N.); (Í.H.d.L.C.); (G.L.F.d.S.); (G.R.S.)
| | - Daniel Valadão Silva
- Postgraduate Program in Soil and Water Management, Universidade Federal do Semiárido, Mossoró 59625900, RN, Brazil; (R.O.B.); (D.V.S.); (P.V.C.d.O.)
| | | | - Palloma Vitória Carlos de Oliveira
- Postgraduate Program in Soil and Water Management, Universidade Federal do Semiárido, Mossoró 59625900, RN, Brazil; (R.O.B.); (D.V.S.); (P.V.C.d.O.)
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Karipçin MZ. Hydrogels improved parsley ( Petroselinium crispum(Mill.) Nyman) growth and development under water deficit stress. PeerJ 2023; 11:e15105. [PMID: 36987451 PMCID: PMC10040180 DOI: 10.7717/peerj.15105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 02/28/2023] [Indexed: 03/30/2023] Open
Abstract
Water scarcity is one of the most pressing problems facing countries in the semi-arid and arid regions of the world. Data predicts that by 2030, global water consumption will increase by 50%, leading to severe water shortages. Today, agricultural production consumes more than 70% of fresh water in many parts of the world, increasing the pressure on water scarcity. For these reasons, agricultural production models and approaches should be developed to reduce water consumption. One developed approach is the use of hydrogel to reduce water consumption and have a positive effect on plant growth. This study investigated the use of hydrogels as chemical components that can be used in water shortage conditions and against the expected water scarcity. Parsley was used as the model organism. The method used was as follows: two different water treatments (50% and 100%) and four different hydrogel concentrations (0%, 50%, 75%, and 100%) were applied, and root width and length, leaf width and length, main stem length, and the number of tillers were measured. According to the results, while no improvement was observed in the plants with 100% hydrogel concentration, the best results were obtained from 50% hydrogel application. The results obtained from 75% hydrogel application were found to be higher than those of 100% hydrogel but lower than 0% hydrogel application. With 50% hydrogel (water-restricted), all plant growth parameters were higher compared to the plants with 100% (full irrigation) water application. It was determined that the average value of the I1 (50%) irrigation was the highest (3.6), and the average value of the I2 (100%) irrigation (2.4) was the lowest. It was determined that the highest average value (6.2) in all measured traits was the average value of the H1 (50%) application, and the lowest average value (0.0) was in the H3 hydrogel applications (100%). In conclusion, this study suggested that hydrogel application is beneficial on a large scale, can optimize water resource management for higher yields in agriculture, and has a positive effect on agricultural yield under water deficit stress.
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