Question

I want to create a paper-thin layer of calcium chloride. This sheet should still be capable of absorbing water and allowing gas to permeate downward when it becomes saturated with water and is exposed to sunlight on the top surface. I've tried a sandwich of a regular plastic sheet (top surface) and a gas-permeable membrane PDMS (bottom surface), with a layer of salt bound with commercial white glue between them. Unfortunately, the glue prevents any gas from reaching the bottom surface.

I wonder what I should use as a binding agent for my salty sheet while maintaining its water absorption and gas permeability capability.

Answer 1

To create a paper-thin layer of calcium chloride that maintains its water absorption and gas permeability capabilities, use a water-soluble adhesive instead of commercial white glue.

Step-by-step explanation:

To create a paper-thin layer of calcium chloride that maintains its water absorption and gas permeability capabilities, you can use a water-soluble adhesive instead of commercial white glue. This will allow water and gas to reach the bottom surface of the gas-permeable membrane.

A water-soluble adhesive will dissolve when exposed to water, ensuring that the flow of gas is not blocked. This way, you can achieve both water absorption and gas permeability in your calcium chloride layer.