Questions tagged [adhesion]

Adhesion refers to the attractive forces that exist between two materials. Questions that are based on these attraction forces, e.g: surface tension, contact angle, capillary rise, should use this tag. use with the tag: [surface-chemistry]

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Are all humectants sticky?

While using a topical lotion based on ethanol, water and propylene glycol, I noticed that it becomes sticky while drying. Propylene glycol is a humectant and is used for this purpose in ...
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What determines 3D printing material compatibility?

3D printing, specifically the type common for consumers FDM or FFF, involves laying down thin (typically 0.1 to 0.2mm) layers of molten plastic. Modern consumer printers can use various filaments: PLA,...
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What's the mechanism behind mineral oil loosening cyanoacrylate bonds?

Per industry literature I found that mineral oil is used to loosen out "super glue" and aid in removal from skin. I am exploring the chemistry of this loosening and I am intrigued. Please help me find ...
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2 votes
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Are there any types of adhesive which are designed to be easily soluble in strong acid (HCl with pH 1-4)?

I am a mechanical engineer so forgive my ignorance in chemistry. I know there are water soluble adhesives like polyvinyl alcohol but I am wondering if there are glues which easily dissolve in low pH ...
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How to make sure molded silicone rubber adheres to the ABS mold?

For one of my experiments I need to coat a 3D printed ABS part with a thin layer of silicon rubber: Basically I want to make sure the molded silicon will adhere to one mold (the negative side in ...
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What gives saliva its adhesive properties?

The act of sealing off an envelope by licking the flap and "gluing" it down so that the envelope becomes closed rather tightly is probably rare nowadays, but remains well known to many people. I was ...
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Why non polar liquids wet non polar surfaces better than polar surfaces?

In semiconductor industry adhesion promoters (such as HMDS) are applied on various surfaces to improve adhesion between the surface and the photoresist: On SiO2 and many metals surfaces, the air ...
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Work to overcome adhesion of a liquid to a solid

I'm interested in the van Der Waals force of a liquid adhered to a solid. For example, if you spray some water on a vertical piece of glass, the little droplets with adhere to the window rather than ...
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Is this plastic clip made of polypropylene or polyethylene?

I am trying to re-attach an automotive clip (painted plastic with a yellow (epoxy?) hard adhesive backing) which secures a trim piece back onto the vehicle's roof sheet metal (unpainted (primed?) area)...
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Nanocomposite hydrogel for wet adehsion in biomedical applications

My name‘s Tristan and I‘m a bachelor‘s student in Germany. I‘m trying to synthesize an injectable nanocomposite hydrogel for wound closure and wound healing applications. The problem is that, next to ...
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Why does contact glue get stickier (to itself) as it dries?

I'm thinking of that type of glue that you apply to both sides, let dry and then press together. Like this. It seems counter intuitive. Other glues behave in the opposite manner, and get less sticky ...
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What will a polyurethane resin not adhere to?

For making a mould out of the bicomponent polyurethane resin kit that I have - I am going to need to take out the mould from its form. The mould is what I am actually making from the bicomponent resin....
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Gluing bakelite together

I have an older stainless steel saucepan with what I've always called a Bakelite handle. The pan fell, the handle broke. If possible, I'd like to glue it. The break is near where the handle ...
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Near melting thermoplastic material accumulates in the sharper corners. What is this phenomenon?

I have a part made of a thermoplastic material. When I heat it up and cool it down, the dimension of the part changes non-uniformly. Somehow the melted material tries to fill the sharper corners. So ...
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Why are glues/adhesives made up of polymers?

Why are glues/adhesives made up of polymers? Can monomers be used to make an adhesive. What is is about the fact that the molecules are stuck together in a chain that make them better/more useful as ...
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What are some materias/substances that can be applied to a ball such that the ball will stck to a wall,if thrown

I am trying to make a prototype for the "valkyrie camera" seen in the video game Rainbow 6 Siege This is how it works https://gfycat.com/impressivegrippingauklet the black ball seen is the ...
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Breaking/reducing water adhesion with an electric field

Does anyone know if the presence of an electric field can help to reduce water adhesion to a surface?
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