Why doesn't glue stick to the inside of the bottle?

Its one of the mystery in some peoples life about "Why doesn't glue stick to the inside of the bottle?" Is it something magical? Well, it isn't...Its all about science. Let's explore!

The regular white glue that we use is made up of a variety of chemicals called polymers that are either sticky, or stretchy. White glue also contains water. Water acts as a solvent that keeps the glue liquid until you want it to stick.

When you put glue on a piece of paper, the water in it is exposed to air. The water eventually evaporates, and as it does so, the glue dries, hardens, and holds the things that need to be glued, stuck together. This is called Mechanical Adhesion.

 When the glue is inside a bottle, there's not enough air inside the bottle to cause the water to evaporate to make the glue sticky. The bottle protects the glue from the air, and keeps the glue runny. This is also why, if you've ever left the top off a glue bottle for a while, the next time you try to use the glue, it would have dried up.

What about super glue? You may have noticed that super glue tends to dry out in its container more quickly than white glue.

Super glue works differently than white glue. Super glue is made of a chemical called cyanoacrylate. This chemical bonds things together when it reacts with water vapor in the air. This process is called chemical adhesion.

No matter how dry the air may seem, there's always some water vapor in the air. To keep super glue from drying out, its container must be kept tightly-sealed to prevent water vapor from seeping in and reacting with the glue.

So whether you're talking about white glue or super glue, water is the key. With white glue, you need the bottle to keep the water in the glue from drying up and becoming sticky. Super glue containers, on the other hand, keep water out to prevent the chemical reaction that will make the glue harden.

You can always let me know what you want me to write about when I come back again!

Do subscribe to get more of these daily!

Any ideas and suggestions will be appreciated!

     "Will be back tomorrow with some more interesting facts!"

Do download my app which contains Blog and many other features in it - https://play.google.com/store/apps/details?id=appinventor.ai_praneetht45.Brainiac_Machine