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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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Chiriac AP, Diaconu A, Nita LE, Tudorachi N, Mititelu-Tartau L, Creteanu A, Dragostin O, Rusu D, Popa G. The influence of excipients on physical and pharmaceutical properties of oral lyophilisates containing a pregabalin-acetaminophen combination. Expert Opin Drug Deliv 2017; 14:589-599. [PMID: 28276969 DOI: 10.1080/17425247.2017.1291629] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
OBJECTIVES The purpose of the study was to investigate and characterize the oral lyophilisates containing the pregabalin-acetaminophen drug combination and as xcipients mannitol with microcrystalline cellulose or hydroxypropyl methylcellulose, in order to conclude upon drug-excipient interactions and their stability implications, impact of excipients on drug release and on the physicochemical and mechanical properties of the pharmaceutical formulations. METHODS The oral tablets were made by using a Christ freeze-dryer alpha 2-4-LSC lyophilizer, and evaluated for stability, drug-excipient compatibility and homogeneity of the prepared pharmaceutical formulations. The formulations were evaluated for in vivo absorption in rabbits by histopathological exams. RESULTS FTIR and thermogravimetric analyses, DLS technique, SEM and NIR-CI studies confirmed the compatibility between compounds. From the determined physical and biochemical parameters of the formulations it was established that they are stable, homogeneous, and meet the conditions for orally disintegrating tablets. CONCLUSION In the case of the investigated pharmaceutical formulations the study evidenced the assembling through physical bonds between the excipients and the 'codrug' complex, which do not affect the release of the bioactive compounds.
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Affiliation(s)
- Aurica P Chiriac
- a 'Petru Poni' Institute of Macromolecular Chemistry , Iasi , Romania
| | - Alina Diaconu
- a 'Petru Poni' Institute of Macromolecular Chemistry , Iasi , Romania
| | - Loredana E Nita
- a 'Petru Poni' Institute of Macromolecular Chemistry , Iasi , Romania
| | - Nita Tudorachi
- a 'Petru Poni' Institute of Macromolecular Chemistry , Iasi , Romania
| | - Liliana Mititelu-Tartau
- b Department of Pharmacology-Algesiology, Faculty of Pharmacy , University of Medicine and Pharmacy 'Grigore T. Popa' , Iasi , Romania
| | - Andreea Creteanu
- c Department of a Pharmaceutical Technology, Algesiology, Faculty of Pharmacy , University of Medicine and Pharmacy 'Grigore T. Popa' , Iasi , Romania
| | - Oana Dragostin
- d Department of Pharmaceutical Sciences , 'Dunarea de Jos' University of Medicine and Pharmacy , Galati , Romania
| | - Daniela Rusu
- a 'Petru Poni' Institute of Macromolecular Chemistry , Iasi , Romania
| | - Gratiela Popa
- c Department of a Pharmaceutical Technology, Algesiology, Faculty of Pharmacy , University of Medicine and Pharmacy 'Grigore T. Popa' , Iasi , Romania
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Chiriac AP, Nita LE, Neamtu I. Possibilities of quercetin insertion into poly(N,N-dimethylacrylamide-co-3, 9-divinyl-2, 4, 8, 10-tetraoxaspiro (5.5) undecane) network. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 47:17-25. [PMID: 25492168 DOI: 10.1016/j.msec.2014.11.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 10/22/2014] [Accepted: 11/06/2014] [Indexed: 11/28/2022]
Abstract
The study presents the possibility of coupling quercetin into poly(N,N-dimethylacrylamide-co-3, 9-divinyl-2, 4, 8, 10-tetraoxaspiro (5.5) undecane) (PDMA-co-U) gel network through a semi-imprinted procedure in order to obtain a responsive antioxidant composite. A continuous magnetic field was used during quercetin insertion for prearranging the compounds - macromolecular matrix and quercetin - and improving the coupling efficiency of the flavonoid structure into the polymeric network. The new supramolecular systems were characterized by FTIR, SEM and thermogravimetric analyses. The dependence of the swelling degree equilibrium and particle size distribution of the studied chemical structures were also evaluated related to the experimental conditions of preparation.
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Affiliation(s)
- Aurica P Chiriac
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley No. 41-A, 700487 Iasi, Romania.
| | - Loredana E Nita
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley No. 41-A, 700487 Iasi, Romania
| | - Iordana Neamtu
- "Petru Poni" Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley No. 41-A, 700487 Iasi, Romania
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