Collapse of Gels in an Electric Field

DOI: 10.1126/science.218.4571.46

http://www.sciencemag.org/content/218/4571/467

Hello,

details of the procedure may vary depending on what exactly you call "electro-responsive" - meaning what type of response you want to get, and what is the external stimulus. By basically, according to definition, ANY polyelectrolyte gel is somehow electroresponsive - the simplest cases are poly(sodium acrylate), poly(2-acrylamido-2-methylpropanesulfonic acid), poly(vimylamine), etc. I advise you to have a look at the papers by Y. Osada (if I am not mistaken relying on my memory he wrote an exciting cycle of them starting probably ~1995-2000).

Useful publications about electro-sensitive (electro-responsive) hydrogels (Synthesis, Properties and Applications).

Collapse of Gels in an Electric Field

DOI: 10.1126/science.218.4571.46

http://www.sciencemag.org/content/218/4571/467

Hi Sanei

The electro-responsive hydrogels are usually consist of polyelectrolytes polymer networks containing ionic functional groups i.e. sulphonic acids, carboxylic acids, etc. and deformed under the influence of electric potential, such as expansion, contraction, elongation, bending. You can prepare hydogels base poly (sodium acrylate), poly (2-acrylamido-2-methylpropanesulfonic acid) by solution polymerization method using MBA as cross-linking agent and go through the literature given by A. Hajighasem .

We all should thank HAJI for references and files provided.

You, Folks from Iran, both, Mahmood and Haji, do a good job, discussing interesting subject. I follow teachngs of my PAST ADVISOR, as on my RG site (INFO), support young scientists internationally.

Some materials like starch, Silica or BATiO2 are Electro sensitive using for example oil as the "solvent". For example, 10 % of starch in 1000 Cp silicone oil. You can create after a gel using a polymer. The easiest way is to use a thermosensitive polymer that can create a gel changing the temperature. After, you can measure the mechanical properites of the gel applying several ER intensities with a rheometer(with the ER accessory).