Publication detail

Physical Hydrogels Modified by Amphiphiles: Rheology as a Tool for Hydrogel Characterization

HEGER, R. PEKAŘ, M.

Original Title

Type

abstract

Language

English

Original Abstract

Hydrogels are a very interesting and sought material due to their properties and possible applications in several sectors, namely pharmacy, medicine, agriculture, and many others. For several possible applications, their biocompatibility and biodegradability are essential. The most suitable representatives for these conditions are physically crosslinked hydrogels. Which, they, however, lack especially in terms of mechanical properties. For this reason, such hydrogels are often modified. One possibility of modification is the addition of amphiphilic substances that self-organize inside the hydrogel and modify its properties. Rheology appears to be a suitable method for characterizing mechanical properties, however, measuring and evaluating the results obtained while measuring the hydrogel samples is quite difficult. This work tries to describe various tests on these modified hydrogel materials and their evaluation for appropriate and correct descriptions of hydrogel materials. The basic test that will tell us a lot about hydrogels is the amplitude deformation test, which will provide us with information about the linear viscoelastic region, the cross-over point, and information needed to set up other tests. The next test is the frequency test, which provides us with information to calculate the network density and mesh size. Relaxation tests are very important, i.e. three interval thixotropy and creep tests. They provide us with information about the regeneration of the hydrogels after stress. Together, these tests will help us characterize the hydrogel material and also be able to recognize the differences between modified hydrogels and hydrogels without modifications.

Keywords

Hydrogel, rheology, surfactants, amphiphiles

Authors

HEGER, R.; PEKAŘ, M.

Released

20. 10. 2022

Publisher

Tanger Ltd.

Location

Ostrava, CZ

ISBN

978-80-88365-07-5

Book

Nanocon 2022 Abstracts 14th International Conference on Nanomaterials - Research & Application

Edition number

Pages from

Pages to

Pages count

BibTex

@misc{BUT183143,
  author="Richard {Heger} and Miloslav {Pekař}",
  title="Physical Hydrogels Modified by Amphiphiles: Rheology as a Tool for Hydrogel Characterization",
  booktitle="Nanocon 2022 Abstracts
14th International Conference on Nanomaterials - Research & Application",
  year="2022",
  edition="1",
  pages="90--91",
  publisher="Tanger Ltd.",
  address="Ostrava, CZ",
  isbn="978-80-88365-07-5",
  note="abstract"
}