Article
Biochemistry & Molecular Biology
Elena Manaila, Gabriela Craciun, Ion Cosmin Calina
Summary: Agriculture is affected by water scarcity and nutrient deficiency, and it also contributes to these issues. Using biodegradable hydrogels as soil conditioners can improve irrigation efficiency, reduce the need for fertilizers, and combat pathogens. This study aimed to create and characterize Sodium Alginate-g-acrylamide/acrylic Acid hydrogels using electron beam irradiation, and investigate their potential as soil conditioners through absorption and release experiments. The hydrogels were obtained through irradiation using a linear accelerator and their physical, chemical, structural, and morphological characteristics were analyzed. Several experiments were performed to test the absorption and release of different nutrient solutions.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Engineering, Environmental
Ayoub El Idrissi, Abdelouahed El Gharrak, Ghizlane Achagri, Younes Essamlali, Othmane Amadine, Adil Akil, Said Sair, Mohamed Zahouily
Summary: A novel slow-release nitrogen fertilizer hydrogel nanocomposite was successfully fabricated by incorporating functionalized cellulose nanocrystals and urea, exhibiting improved water absorbency and prolonged nitrogen release duration, showing potential value in agricultural applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Applied
Yucheng Song, Hui Li, Tianhang Shan, Peipei Yang, Songwei Li, Zhong Liu, Chuntai Liu, Changyu Shen
Summary: A composite hydrogel with excellent properties, including low swelling ratio, mechanical strength, and uranium adsorption capacity, was developed by incorporating a metal-organic framework with a poly(acrylamide-co-acrylic acid)/chitosan composite.
CARBOHYDRATE POLYMERS
(2023)
Article
Polymer Science
Cynthia G. Flores-Hernandez, Maria de los Angeles Cornejo-Villegas, Abigail Moreno-Martell, Alicia Del Real
Summary: The study aimed to obtain a new biodegradable graft polymer through two chemical processes, FTIR and TGA analysis confirmed its structure and thermal properties, with strong impact on fungal growth.
Article
Polymer Science
Nasser Mohammed Hosny, Mohammed Abbass, Faten Ismail, Horia M. Nizam El-Din
Summary: This study characterized polyacrylic acid/acrylamide (AAc/AAm) and polyacrylic acid/acrylamide doped with magnetite (AAc/AAm)Fe3O4 hydrogels prepared by gamma-radiations. The hydrogels were characterized through various techniques and their properties such as morphology, particle size, cross-linking degree, swelling behavior, magnetism, and semiconductor nature were investigated. The study also examined the loading and release of the drug doxorubicin by the hydrogels.
Article
Engineering, Environmental
Ann Pille, Marie-Josee Dumont, Jason R. Tavares, Ranjan Roy
Summary: The macroscopic structure of hydrogels was modified using foaming additives, which significantly affected their swelling capacity and heavy metal adsorption. The use of foaming agents increased ion removal capacity of the hydrogels.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Polymer Science
Rajabali Ebrahimi
Summary: Ultrasound was used in polymerization reactions to produce hydrogels without the need for an initiator. The resulting hydrogels are formed quickly, have uniform structures, strong water absorption capabilities, and can swell in different environments. Furthermore, they exhibit high drug release rates and can be reused effectively.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Jiyuan Wu, Reghan J. Hill
Summary: Electroacoustic characterization of Laponite-doped neutralized poly(acrylic acid-co-acrylamide) hydrogels was studied, showing that Laponite doping increased the electroacoustic signal and ionic conductivity but decreased the hydrogel storage modulus. Theoretical models were extended to estimate some parameters of Laponite-doped hydrogels.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Physical
Alvin Kier R. Gallardo, Alyan P. Silos, Lorna S. Relleve, Lucille V. Abad
Summary: The effects of long-term storage and retrogradation on the stability of gel properties in radiation-synthesized super water absorbents were studied. Retrogradation was found to reduce the degree of swelling in the absorbents, but lowering the storage temperature could suppress this effect.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Polymer Science
Demet Kaya Aktas, Filiz Oztekin
Summary: Ionic hydrogels are suitable for drug delivery applications, and in this study, pH-sensitive P(AAc-co-AAm) hydrogels were investigated for swelling properties using a hydrophilic fluorescence probe, 4sPy. The fluorescence intensity of 4sPy was monitored during swelling processes at different pH values, showing similar behavior to trapped drug carriers. These hydrogels could be useful for targeted drug delivery systems in the jejunum, with potential for 4sPy as a monitoring probe for drug carriers.
Article
Engineering, Environmental
Fan Yang, Jianzhong Ma, Yan Bao, Qian Zhu, Wenbo Zhang
Summary: A newly developed bacteria brans and polymeric hydrogel with enhanced water absorbency properties were reported and characterized. The hydrogel exhibited favorable swelling behaviors and potential applications in agriculture.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Polymer Science
Jignesh Trivedi, Arvind Chourasia
Summary: The water absorption properties of a new superabsorbent anionic hydrogel, H-Na-PCMSA-g-PAN, were investigated in water, low-conductivity saline solutions, and simulated urine. The hydrogel showed reduced swelling capacity in the saline solutions compared to water, and the trend of swelling was Na+ > Ca2+ > Al3+ at the same concentration. The swelling capacity decreased with increasing ionic strength of the swelling medium, consistent with experimental results and Flory's equation. The swelling process of the hydrogel followed second-order kinetics in various swelling media.
Article
Chemistry, Applied
Tannaz Mozaffari, Abolfazl Keshtkar Vanashi, Hossein Ghasemzadeh
Summary: A novel nanocomposite hydrogel with high dye adsorption capacity was synthesized by radical polymerization, and it was found to exhibit efficient removal of dyes and good recyclability under certain conditions through structural and dye adsorption studies.
CARBOHYDRATE POLYMERS
(2021)
Article
Polymer Science
Hebat-Allah S. Tohamy, Mohamed El-Sakhawy, Beata Strachota, Adam Strachota, Ewa Pavlova, Silvia Mares Barbosa, Samir Kamel
Summary: In this study, highly swelling, stimuli-responsive hydrogels were prepared using hydroxypropyl methyl cellulose (HPMC) grafted with acrylamide (AM) and 3-sulfopropyl acrylate (SPA). These hydrogels displayed remarkable elasticity, high swelling ratio, and fast swelling kinetics. The gel with AM/SPA ratio of 0.5 exhibited the highest equilibrium swelling ratio, maximum volume response to temperature and pH, and fastest swelling kinetics, but had the lowest modulus. The hydrogels showed efficient removal of Cr(VI) from water, with 90-96% removal in one step.
Article
Environmental Sciences
Sourbh Thakur, Ankit Verma, Pankaj Raizada, Oguzhan Gunduz, Dawid Janas, Walaa F. Alsanie, Fabrizio Scarpa, Vijay Kumar Thakur
Summary: In this study, a cross-linked hydrogel based on sodium alginate, dextrin, and acrylic acid was prepared, with bentonite incorporated for efficient removal of the toxic herbicide paraquat. The synthesized hydrogel was characterized and showed good reusability. The results demonstrate that the synthesized adsorbents are highly effective for removing herbicides from wastewater.