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Gelling process for sodium alginate: New technical approach by using calcium rich micro-spheres
- Source :
- Carbohydrate Polymers. 134:767-774
- Publication Year :
- 2015
- Publisher :
- Elsevier BV, 2015.
-
Abstract
- Alginate based materials have become an important class of products in many fields from the pharmaceutical industry to tissue engineering, because of their ability to create stimuli responsive hydrogels. We present a new technical approach for obtaining a controlled gelling process, based on the quantities of Ca(2+) rich alginate micro-beads added as crosslinkers. The gels have been evaluated in light of the amount of Ca(2+) added to the alginate solution, and in light of the different dimensions of the micro-beads, using rheological measurements to assess the variation in the storage modulus (G'), loss modulus (G'') and complex viscosity (η(*)) as well as swelling and deswelling tests. The methodology was developed to obtain a material with specific characteristics for application in the field of conservation. The material had to be able to create a stable gel after being applied on the artwork surface and to confine the solvent action at the interface during cleaning operations.
- Subjects :
- Materials science
Polymers and Plastics
Alginates
Viscosity
Glucuronic Acid
Rheology
Dynamic modulus
Materials Chemistry
medicine
Rheological properties
Chromatography
Rheometry
Sodium alginate, Alginate micro-spheres, Rheological properties, Swelling test
Hexuronic Acids
Organic Chemistry
Dynamic mechanical analysis
Microspheres
Swelling test
Solvent
Chemical engineering
Alginate micro-spheres
Self-healing hydrogels
Calcium
Swelling
medicine.symptom
Sodium alginate
Gels
Subjects
Details
- ISSN :
- 01448617
- Volume :
- 134
- Database :
- OpenAIRE
- Journal :
- Carbohydrate Polymers
- Accession number :
- edsair.doi.dedup.....f0ec0cb8524195d8145a70f1a1b46723