Results 1 to 10 of about 189,492 (266)

Synthesis of poly(acrylamide-co-methyl methacrylate) chemicaly cross-linked hydrogels for efficient adsorption of red erionyl dye [PDF]

Acta Periodica Technologica, 2022
Polyacrylamide (Poly (AAm)) and poly(acrylamide-co-methyl methacrylate) (poly (AAm-co-MMA)) hydrogels were synthesized by solution free radical polymerization initiated by Potassium persulfate initiator (KPS) at different feed mol monomer ratios
Chaibi Wahiba, Boucherba Hanane Rekia, Filali Elhouda Nour Sabrina, Boukhouya Imene, Badaoui Asma, Guemra Kaddour   +5 more
doaj   +1 more source

Effect of Crosslinking Agent (Zinc Chloride) on the Swelling Ratio and Water Retention Capacity of Polyacrylate and Polyvinyl Alcohol [PDF]

Journal of Applied Sciences and Nanotechnology, 2022
In this study, using potassium polyacrylate (KPA), polyvinylalcohol (PVA), and zinc chloride as cross-linking agents, successfully synthesized novel superabsorbent polymers.
Saja Kadhim, Awham Hameed, Rashed Rasheed   +2 more
doaj   +1 more source

Swelling Behavior and Flow Rates of a Novel Hydrophilic Gasket Used in Composite Geomembrane Vertical Cutoff Walls and Infrastructures Exposed to Contaminated Groundwater

Buildings, 2022
The swelling capacity of novel hydrophilic gaskets used in geomembrane cutoff walls and infrastructures is critical for decreasing the flow rates of contaminated groundwater. This study investigated the swelling behavior, relaxation characteristics, flow
Min Wang, Xianlei Fu, Zheyuan Jiang, Chi Che, Ningjun Jiang, Yanjun Du   +5 more
doaj   +1 more source

Synthesis of a Cellulose-Co-AMPS Hydrogel for Personal Hygiene Applications Using Cellulose Extracted from Corncobs

Gels, 2021
Cellulose-based hydrogels were prepared by the extraction of cellulose from corncobs after the removal of lignin and hemicellulose with the use of alkali–acid treatment.
Haymanot Enawgaw, Tamrat Tesfaye, Kelem Tiessasie Yilma, Derseh Yilie Limeneh   +3 more
doaj   +1 more source

Effects of Ammonium Salts on Rare Earth Leaching Process of Weathered Crust Elution-Deposited Rare Earth Ores

Metals, 2023
In order to reveal the influence of ammonium salts on the rare earth leaching process of weathered crust elution-deposited rare earth ores, ammonium acetate, ammonium chloride, and ammonium sulfate were used as leaching agents.
Zhenyue Zhang, Changyu Zhou, Wendou Chen, Fei Long, Zhuo Chen, Ru’an Chi   +5 more
doaj   +1 more source

Hydrogels Based on Polyacrylamide and Calcium Alginate: Thermodynamic Compatibility of Interpenetrating Networks, Mechanical, and Electrical Properties

Biomimetics, 2023
The synthesis and physicochemical properties of hydrogels with interpenetrated physical and chemical networks were considered in relation to their prospective application as biomimetic materials in biomedicine and bioengineering. The study was focused on
Alexander P. Safronov, Nadezhda M. Kurilova, Lidiya V. Adamova, Tatyana F. Shklyar, Felix A. Blyakhman, Andrey Yu. Zubarev   +5 more
doaj   +1 more source

Synthesis and study of magnesium complexes derived from polyacrylate and polyvinyl alcohol and their applications as superabsorbent polymers

Journal of the Mechanical Behavior of Materials, 2022
Novel superabsorbent polymers (SAPs) were created by solution polymerization at ambient temperature using potassium polyacrylate (KPA), polyvinyl alcohol (PVA), and magnesium chloride as a cross-linking agent with different weights of 0.4, 0.5, 0.6, 0.7,
Kadhim Saja A., Hameed Awham M., Rasheed Rashed T.   +2 more
doaj   +1 more source

Laboratory Tests on Swelling Properties of Field-Coring Gypsum Rock in Tunnels

Applied Sciences, 2023
The reaction between gypsum rock and water results in swelling deformation and swelling pressure. Swelling deformation and swelling pressure cause damage to underground engineering such as tunnels.
Chongbang Xu, Haoju Fan, Xu Zhao, Lifeng Fan, Peng Wang   +4 more
doaj   +1 more source

Measuring microgel swell ratio by cryo-SEM [PDF]

Polymer, 2017
Abstract The swell ratio is a key parameter characterizing the structure and properties of a hydrogel. In macroscopic gels, the swell ratio can be determined by straightforward measurements of the gel weight in the dry and hydrated states. However, measuring the swell ratio characteristic of microgels (gel particles with dimensions of 0.1–100 μm) is ...
Jing Liang, Feiyue Teng, Tseng-Ming Chou, Matthew Libera   +3 more
openaire   +1 more source

Synthesis, Characterization and Safety Evaluation of Sericin-Based Hydrogels for Controlled Delivery of Acyclovir

Pharmaceuticals, 2021
Conventional formulations of antiviral drug acyclovir have various limitations such as low bioavailability. The current study was aimed at developing polymeric matrices for the controlled delivery of acyclovir using sericin as polymer and acrylic acid ...
Moawia M. Al-Tabakha, Shujaat Ali Khan, Akram Ashames, Hamid Ullah, Kaleem Ullah, Ghulam Murtaza, Nageeb Hassan   +6 more
doaj   +1 more source