MyJournals Home  

RSS FeedsMolecules, Vol. 24, Pages 1545: How Humic Acids Affect the Rheological and Transport Properties of Hydrogels (Molecules)


19 april 2019 09:00:30

Molecules, Vol. 24, Pages 1545: How Humic Acids Affect the Rheological and Transport Properties of Hydrogels (Molecules)

Humic acids are often regarded as substances with a supramolecular structure which plays an important role in Nature. Their addition into hydrogels can affect their behavior and functioning in different applications. This work is focused on the properties of widely-used hydrogel based on agarose after addition of humic acids–the protonated H-form of humic acids and humic acids with methylated carboxylic groups. Hydrogels enriched by humic acids were studied in terms of their viscoelastic and transport properties. Rotational rheometry and methods employing diffusion cells were used in order to describe the influence of humic acids on the properties and behavior of hydrogels. From the point of view of rheology the addition of humic acids mainly affected the loss modulus corresponding to the relaxation of hydrogel connected with its flow. In the case of diffusion experiments, the transport of dyes (methylene blue and rhodamine) and metal ions (copper and nickel) through the hydrogel was affected by interactions between humic acids and the diffusion probes. The time lag in the hydrogel enriched by humic acids was prolonged for copper, methylene blue and rhodamine. In contrast, the presence of humic acids in hydrogel slightly increased the mobility of nickel. The strongest influence of the methylation of humic acids on diffusion was observed for methylene blue. Digg Facebook Google StumbleUpon Twitter
55 viewsCategory: Biochemistry, Chemistry, Molecular Biology
Molecules, Vol. 24, Pages 1538: PEGylated Polyurea Bearing Hindered Urea Bond for Drug Delivery (Molecules)
Molecules, Vol. 24, Pages 1544: Propolis Induces AQP3 Expression: A Possible Way of Action in Wound Healing (Molecules)
blog comments powered by Disqus
The latest issues of all your favorite science journals on one page


Register | Retrieve


Molecular Biology

Use these buttons to bookmark us: Digg Facebook Google StumbleUpon Twitter

Valid HTML 4.01 Transitional
Copyright © 2008 - 2019 Indigonet Services B.V.. Contact: Tim Hulsen. Read here our privacy notice.
Other websites of Indigonet Services B.V.: Nieuws Vacatures News Tweets Travel Photos Nachrichten Indigonet Finances Leer Mandarijn