A study on the release kinetics and mechanisms of vanillin incorporated in almond gum/polyvinyl alcohol composite nanofibers in different aqueous food simulants and simulated saliva

2016 ◽  
Vol 31 (6) ◽  
pp. 442-447 ◽  
Author(s):  
A. Rezaei ◽  
A. Nasirpour ◽  
H. Tavanai ◽  
M. Fathi
Keyword(s):  
Polyvinyl Alcohol ◽  
Composite Nanofibers ◽  
Release Kinetics ◽  
Food Simulants

scholarly journals Electrospun chitosan–polyvinyl alcohol composite nanofibers loaded with cerium for efficient removal of arsenic from contaminated water

2014 ◽  
Vol 2 (39) ◽  
pp. 16669-16677 ◽  
Author(s):  
Reena Sharma ◽  
Nahar Singh ◽  
Ashish Gupta ◽  
Sangeeta Tiwari ◽  
Sandeep Kumar Tiwari ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Composite Nanofibers ◽  
Contaminated Water ◽  
Efficient Removal ◽  
Electrospinning Technique ◽  
Removal Of Arsenic

Cerium-PVA/CHT nanofibers prepared through electrospinning technique have demonstrated 80% removal of Arsenic from contaminated water within the initial 10 minutes.

scholarly journals Sustained Release of Linezolid from Prepared Hydrogels with Polyvinyl Alcohol and Aliphatic Dicarboxylic Acids of Variable Chain Lengths

Pharmaceutics ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 982
Author(s):  
Gustavo Carreño ◽  
Adolfo Marican ◽  
Sekar Vijayakumar ◽  
Oscar Valdés ◽  
Gustavo Cabrera-Barjas ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Polyvinyl Alcohol ◽  
Sustained Release ◽  
Release Kinetics ◽  
Dicarboxylic Acids ◽  
Release Profile ◽  
Significant Activity ◽  
Crosslinking Degree ◽  
Aliphatic Dicarboxylic Acids

A series of hydrogels with a specific release profile of linezolid was successfully synthesized. The hydrogels were synthesized by cross-linking polyvinyl alcohol (PVA) and aliphatic dicarboxylic acids, which include succinic acid (SA), glutaric acid (GA), and adipic acid (AA). The three crosslinked hydrogels were prepared by esterification and characterized by equilibrium swelling ratio, infrared spectroscopy, thermogravimetric analysis, mechanical properties, and scanning electron microscopy. The release kinetics studies of the linezolid from prepared hydrogels were investigated by cumulative drug release and quantified by chromatographic techniques. Mathematical models were carried out to understand the behavior of the linezolid release. These data revealed that the sustained release of linezolid depends on the aliphatic dicarboxylic acid chain length, their polarity, as well as the hydrogel crosslinking degree and mechanical properties. The in vitro antibacterial assay of hydrogel formulations was assessed in an Enterococcus faecium bacterial strain, showing a significant activity over time. The antibacterial results were consistent with cumulative release assays. Thus, these results demonstrated that the aliphatic dicarboxylic acids used as crosslinkers in the PVA hydrogels were a determining factor in the antibiotic release profile.

scholarly journals Polyvinyl Alcohol/Soursop Leaves Extract Composite Nanofibers Synthesized Using Electrospinning Technique and their Potential as Antibacterial Wound Dressing

2017 ◽  
Vol 170 ◽  
pp. 31-35 ◽  
Author(s):  
Neni Mona Aruan ◽  
Ida Sriyanti ◽  
Dhewa Edikresnha ◽  
Tri Suciati ◽  
Muhammad Miftahul Munir ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Wound Dressing ◽  
Composite Nanofibers ◽  
Electrospinning Technique

scholarly journals Synthesis and Characterization of Slow-Release Fertilizer Hydrogels Based on Hydroxy Propyl Methyl Cellulose, Polyvinyl Alcohol, Glycerol and Blended Paper as Second Layer

2021 ◽  
Author(s):  
Fartisincha Peingurta Andrew ◽  
Daniel T Gungula ◽  
Semiu A Kareem ◽  
Abdullahi M Saddiq ◽  
Esther F Adebayo ◽  
...  
Keyword(s):  
Polyvinyl Alcohol ◽  
Slow Release ◽  
Tap Water ◽  
Release Kinetics ◽  
Methyl Cellulose ◽  
Release Behavior ◽  
Order Model ◽  
Swelling Kinetic ◽  
Slow Release Urea

In this study, a slow-release urea fertilizer hydrogel was synthesized from hydroxyl propyl methyl cellulose, polyvinyl alcohol and glycerol blends with paper (blended paper) as second layer. The fertilizer hydrogel was characterized by SEM, XRD and FTIR. Its retention in sandy soil, swelling behavior in distilled and tap water as well as slow-release behavior to urea were investigated. The results indicated that the fertilizer had good slow-release properties and ability to retain water in soil. However, the addition of blended paper as a second layer matrix was found to help improve the release properties of the fertilizer. The swelling kinetic of the hydrogel followed the Schott’s Second order model. The release kinetics of urea in water was best described by the Zero order model signifying that the release behavior was independent of fertilizer concentration

Sign in / Sign up

Export Citation Format

Share Document