scholarly journals Synthesis of a biodegradable interpenetrating polymer network of Av-cl-poly(AA-ipn-AAm) for malachite green dye removal: kinetics and thermodynamic studies

RSC Advances ◽  
2018 ◽  
Vol 8 (73) ◽  
pp. 41920-41937 ◽  
Author(s):  
Vaneet Kumar ◽  
Vishal Rehani ◽  
Balbir Singh Kaith ◽  
Saruchi Saruchi
Keyword(s):  
Acrylic Acid ◽  
Malachite Green ◽  
Dye Removal ◽  
Polymer Network ◽  
Aloe Vera ◽  
Interpenetrating Polymer Network ◽  
Thermodynamic Studies ◽  
Malachite Green Dye ◽  
Natural Polysaccharide ◽  
Kinetics And Thermodynamic

This paper deals with the synthesis of a biodegradable interpenetrating polymer network (IPN) from the natural polysaccharide aloe vera (Av), acrylamide (AAm) and acrylic acid (AA), and its evaluation as a dye removal device.

scholarly journals pH-Responsive Succinoglycan-Carboxymethyl Cellulose Hydrogels with Highly Improved Mechanical Strength for Controlled Drug Delivery Systems

Polymers ◽  
2021 ◽  
Vol 13 (18) ◽  
pp. 3197
Author(s):  
Younghyun Shin ◽  
Dajung Kim ◽  
Yiluo Hu ◽  
Yohan Kim ◽  
In Ki Hong ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Mechanical Strength ◽  
Carboxymethyl Cellulose ◽  
Polymer Network ◽  
Controlled Drug Release ◽  
Interpenetrating Polymer Network ◽  
Ph Responsive ◽  
Hek 293 ◽  
Natural Polysaccharide ◽  
293 Cells

Carboxymethyl cellulose (CMC)-based hydrogels are generally superabsorbent and biocompatible, but their low mechanical strength limits their application. To overcome these drawbacks, we used bacterial succinoglycan (SG), a biocompatible natural polysaccharide, as a double crosslinking strategy to produce novel interpenetrating polymer network (IPN) hydrogels in a non-bead form. These new SG/CMC-based IPN hydrogels significantly increased the mechanical strength while maintaining the characteristic superabsorbent property of CMC-based hydrogels. The SG/CMC gels exhibited an 8.5-fold improvement in compressive stress and up to a 6.5-fold higher storage modulus (G′) at the same strain compared to the CMC alone gels. Furthermore, SG/CMC gels not only showed pH-controlled drug release for 5-fluorouracil but also did not show any cytotoxicity to HEK-293 cells. This suggests that SG/CMC hydrogels could be used as future biomedical biomaterials for drug delivery.

scholarly journals Kinetic Behavior of the Adsorption of Malachite Green Using Jordanian Diatomite as Adsorbent

2020 ◽  
Vol 3 (1) ◽  
pp. 1-10
Author(s):  
Emad El Qada
Keyword(s):  
Malachite Green ◽  
Dye Removal ◽  
Considerable Effect ◽  
Intraparticle Diffusion ◽  
Adsorption Rate ◽  
External Mass Transfer ◽  
Experimental Conditions ◽  
Malachite Green Dye ◽  
Series Of Experiments ◽  
Rate Controlling Step

The main intention of this work is to study the adsorption rate and mechanism for the adsorption of Malachite Green dye (MG) onto Jordanian diatomite. A series of experiments were conducted under a variety of conditions such as the mass of diatomite, initial MG concentration, and pH of the solution. The mechanism of adsorption was elucidated based on different kinetic models. Experimental conditions showed a considerable effect on the adsorption rate. Alkali conditions promote MG uptake and increase the rate of adsorption. Approximately 99% of dye removal was achieved as the diatomite dosage increased from 0.25g to 1.5g. The adsorption rate-controlling step was found to be a combination of chemisorption and intraparticle diffusion, with the external mass transfer predominating in the first five minutes of the experiment.

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