Journal
POLYMER
Volume 51, Issue 4, Pages 953-958Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2009.12.016
Keywords
Poly(vinyl alcohol); Poly(acrylic acid); pH sensor
Categories
Funding
- Petrobras
- Brazilian Ministries of Education and Science and Technology
- CAPES
- CNPq
Ask authors/readers for more resources
Understanding the swelling properties of hydrogels and how they affect the hydrogel's morphology is Of fundamental importance in the development of hydrogel-based artificial muscles, bio-actuators, sensors and other devices. In this paper, the swelling behavior of PVA-PAA hydrogel films in saline water and in buffer solutions of different pH values Was investigated. It was observed that the swelling factor of the hydrogel decreases when the ionic strength of the solvent solution increases. Scanning Electron Microscopy (SEM) revealed structures with different pore shapes and sizes depending on the type of solution used for hydration. in saline water, Energy Dispersive X-Ray (EDS) analysis indicated the formation of NaCl crystals within the polymeric network. Finally, the PVA-PAA hydrogel was used as an actuator to strain a fiber Bragg grating sensor, thus providing an indirect measurement of the pH value of the Surrounding solution. (C) 2009 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available