The discussion revolves around methods for extracting gas bubbles trapped in super absorbent polymer (SAP) gel, specifically sodium polyacrylate. Participants explore various techniques, including the use of salt to liquefy the gel and a vacuum pump to extract the gas, while considering the implications of contamination and saturation of the gel.
Participants express differing views on the best method for gas extraction, with no consensus reached on the most effective approach. Some focus on the potential contamination from salt, while others consider the saturation state of the gel.
There are unresolved questions regarding the saturation of the gel with gas and the potential effects of using salt on the SAP's properties.
How sure are you that the gel is saturated by the gas throughout? If it isn't, then perhaps you can pressurize the gel and allow enough time for the gas to dissolve and diffuse into unsatruated regions of the gel.kevin_tee said:I have been thinking to extract gases from SAP (the gel is super absorbent polymer(sodium polyacrylate)). The gases are trapped inside the gel in form of bubbles gas. I am thinking of using salt to turn it back to liquid or using vacuum pump to extract gas out. Using salt might be the best way but it contaminated the SAP. Do anybody have any suggestion? Thank very much.