hydrogel Articles
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Removal of acidic indigo carmine textile dye from aqueous solutions using radiation induced cationic hydrogels
This study examined the removal of acidic indigo carmine dyes from aqueous solutions using cationic hydrogels. Irradiated hydrogels were investigated as a new sorbent for dye removal from aqueous solution. Poly(N,N-Diethylamino ethyl methacrylate) [poly(DEAEMA)] hydrogels were prepared by radiation polymerisation of N,N-diethylamino ethyl methacrylate [DEAEMA] monomer in the presence of ...
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Adsorption of Congo red dye onto antimicrobial terephthaloyl thiourea cross-linked chitosan hydrogels
Adsorption capacity of three antimicrobial terephthaloyl thiourea cross-linked chitosan hydrogels for Congo red dye removal from its aqueous solution has been investigated for the first time in this work. These hydrogels were prepared by reacting chitosan with various amounts of terephthaloyl diisothiocyanate cross-linker. The effect of the hydrogel structural variations and several dye ...
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Hydrogel-swelling driven delivery device for corrosion resistance of metal in water
Corrosion on steel and copper pipes in industry can trigger pollution and weakness due to undesired chemical and biochemical reactions. Too much or too little inhibitor can decrease its efficiency, even causing waste and pollution. In this contribution, an innovative delivery device driven by hydrogel swelling, mainly consisting of a semi-permeable membrane, a hydrogel-swelling force drive ...
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New silicate hydrogel with more elasticity as in–situ water diversion system: preparation and investigation of rheological and pugging behaviours
Silicate–based gels are used in water diversion treatments for its low cost and environmental safety. In this paper, a new hydrogel with an interpenetrating network is developed based on three components, sodium silicate (Na2O.mSi2O), hydrolysed polyacrylamide (HPAM) and an activator. The interpenetrating network of Na2O.mSi2O–HPAM–activator is proposed. In the presence of an activator, ...
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Stabilisation of (3–mercaptopropyl)–trimethoxysilanecapped ZnS nanocrystals in polyacrylamide hydrogel
In this study, we synthesised ZnS nanocrystals and embedded them in polyacrylamide (PAAm) hydrogel to stabilise the fluorescence emission for biomedical applications. ZnS nanoparticles have strong emission but they lose it in time, so generally they are capped with polymers. We capped ZnS nanoparticles with (3–mercaptopropyl)–trimethoxysilane (MPS) and then dispersed them through the PAAm ...
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Poly(sodium methacrylate)/eggshell particles hydrogel composites as dye sorbent
Eggshell (ES) particles as an available and low-cost waste material were utilized to prepare novel hydrogel composites for dye adsorbing application. For this purpose, solution polymerization of sodium methacrylate was carried out in the presence of ES particles with various size ranges. Results showed that incorporation of ES particles resulted in heterogeneous pores and cavities in the ...
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History Development of Hydrogels
Hydrogels are composed of hydrophilic polymers, whose three-dimensional network structure can not only absorb a large amount of water, but also be used to carry drugs. Hydrogels prepared with suitable materials have the characteristics of high biocompatibility, mechanical and viscoelastic control. Since the term was coined in the late 19th century, hydrogels have been widely used in drug ...
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PEG & Hydrogel Solutions
What is Hydrogel? Hydrogels are a class of widely studied and applied biomaterials. Hydrogels have been widely studied as cell scaffolds and drug delivery vehicles because their chemical and physical properties are very close to the natural environment of cells. Hydrogels can encapsulate both cells and biomolecules, and many gel systems can closely control the release properties through ...
By BOC Sciences
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Characterisation and controlled drug release from a novel two-phase hydrogel system
In this work, a two-phase hydrogel system was prepared by physically imbedding a xerogel in the core of a cryogel which was freeze thawed. The cryogels were prepared with poly (vinyl alcohol) (PVA) and poly (acrylic acid) (PAA) while the xerogels were prepared by UV polymerisation of 1-vinyl-2-pyrrolidinone (NVP), acrylic acid (AA) and various percentages of ibuprofen sodium salt. Mechanical and ...
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Biopharma PEG Provides Multi-arm PEG Derivatives Crosslinked Into Hydrogels
Polyethylene (ethylene glycol) is a hydrophilic polymer that can have a very high water content when cross-linked into a network. Polyethylene glycol (PEG) is a suitable material for biological applications because it does not normally elicit an immune response. Since the 1970s, PEG has been used to modify therapeutic proteins and peptides in order to increase their solubility, reduce their ...
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Batch and fixed-bed column study for p-nitrophenol, methylene blue, and U(VI) removal by polyvinyl alcohol–graphene oxide macroporous hydrogel bead
There is an increasing need to explore effective and clean approaches for hazardous contamination removal from wastewaters. In this work, a novel bead adsorbent, polyvinyl alcohol–graphene oxide (PVA-GO) macroporous hydrogel bead was prepared as filter media for p-nitrophenol (PNP), dye methylene blue (MB), and heavy metal U(VI) removal from aqueous solution. Batch and fixed-bed column ...
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Bioinspired Hydrogel To Improve The 3d Printability Of Mechanically Demanding Tissues Such As Intervertebral Disc
Researchers from Albert-Ludwigs-Universität Freiburg im Breisgau, Université Claude Bernard Lyon 1, Universidad Central “Marta Abreu” de Las Villas and Johannes Gutenberg-Universität Mainz developed a 3d printable, bioinspired hydrogel composed of two different biopolymers, chitosan and cellulose nanofibers, through an environmentally friendly process by avoiding both ...
By Regenhu
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Sucrose Polymer Overview
Sucrose is a disaccharide with a unique structure. It is a non-reducing sugar formed by removing a molecule of water from the glycoside hydroxyl group of a molecule of α-D-(+)-glucopyranose and a molecule of β-D-(-)-fructofuranose. During the hydrolysis process, the specific optical rotation of sucrose gradually changes from dextrorotatory to levorotatory, so the hydrolysis of sucrose ...
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Microneedle Patch Technologies: Innovations in Drug Delivery
Microneedle patch technologies have revolutionized the field of drug delivery, offering a wide range of advantages over traditional methods. These innovative patches provide a minimally invasive and painless alternative to injections while ensuring precise and controlled drug administration. In this article, we will explore various types of microneedle patch technologies, including ...
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UCT Silane Cited in Organ-On-Chip
The ventricular myocardium of the human heart is composed of an anisotropic tissue structure that allows for force generation and contraction to pump blood throughout the body. It has long been established that the collagen-rich, fibrous, extracellular matrix environment guides the formation of this laminar tissue architecture. The structural and mechanical properties of the cardiac ...
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Microneedle Patch Technology: Revolutionizing Drug Delivery
Introduction Advancements in medical technology have led to innovative solutions for various healthcare challenges. One breakthrough is microneedle patch technology, holding immense promise in revolutionizing drug delivery. These patches consist of micron-sized needles that painlessly penetrate the skin's outermost layer, enabling the controlled release of medications or therapeutic agents. In ...
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NIEHS-Funded Research Finds that Graphene Shield Shows Promise in Blocking Mosquito Bites
On August 26, 2019, the National Institute of Environmental Health Sciences (NIEHS) announced that the results of an NIEHS-funded study show that graphene could provide alternatives to chemicals in insect repellant and protective clothing. The study, “Mosquito Bite Prevention through Graphene Barrier Layers,” was published in the Proceedings of the National Academy of Sciences. ...
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Contact Lens Permeation Testing from Systech Illinois
A contact lens design using a particular material will require the measurement of Oxygen Permeation. Materials with higher permeation rates together with thinner lenses will perform better, providing greater comfort during use. However, simply choosing the material with the highest permeation rate and making the lens thin is not an easy option. The lens shape and thickness varies with the ...
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BioLargo (BLGO): an important play on wound care - article published by SECFilings.com
BioLargo Inc. (OTCBB: BLGO), a company focused on leveraging Nature’s Best Solution® - iodine– to solve a variety of common problems around the world, operating in industries dominated by giants such as Chemtura Corp (NYSE: CHMT) and Polypore International Inc. (NYSE: PPO), also looks to have an important and potentially significant play in the wound management industry which ...
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Exploring the Origins and Categorization of Microneedles
Microneedles (MN) is a new type of physical permeability-enhancing technology. It consists of multiple micron-scale fine needle tips connected to the base in an array. The needle body is generally 10-2000 microns high and 10-50 microns wide. The length, size and shape of the microneedles can be individually designed according to the needs of the application. When the microneedle delivers the ...
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