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kevin_tee
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Are there any material that contact with water and expand? I can think of sodium polyacrylate, but I can't use it. Thanks.
Dadface said:Anything that's been dehydrated comes to mind such as dried peas. Just thought of something else but I don't know what its called. It comes in powder form and when water is added it expands to a soggy jelly. You can add it to the soil in plant pots to maintain the moisture level.Try your local plant nursery. I guess there are loads of other things.
Some common materials that expand when in contact with water are hydrogels, absorbent polymers, and certain types of wood such as pine and oak.
When water molecules come into contact with the structure of these materials, they are absorbed and cause the material to swell. This is due to the chemical structure of the material and its ability to hold water molecules within its structure.
Yes, some materials that expand in water can release harmful chemicals or become slippery when wet. It is important to read the safety instructions and handle these materials with caution.
Yes, materials that expand in water have a variety of practical uses. They are commonly used in medical applications such as wound dressings and drug delivery systems. They can also be used in agriculture, construction, and even in toys and games.
Yes, there are materials that exhibit both expansion and shrinkage in response to water. These materials are known as smart materials and can be used in various applications such as self-regulating irrigation systems and self-healing coatings.