Green chemistry application to intermolecular forces

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Intermolecular Forces Forces between molecules Permanent dipoles Induced dipoles van der

Intermolecular Forces

Forces between molecules
Permanent dipoles
Induced dipoles
van der Waals or London Dispersion

forces
Hydrogen bonds
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Applications Determines various physical properties of a molecular solid Melting point

Applications

Determines various physical properties of a molecular solid
Melting point
Boiling point
Vapor

pressure
Adhesive force of glue
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An adhesive is a substance that sticks to the surface of

An adhesive is a substance that sticks to the surface of

an object such that two surfaces become bonded.

By Amirreza Saharkhiz (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons

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The adhesive will “wet” or cover the substrate, when the Intermolecular

The adhesive will “wet” or cover the substrate, when the Intermolecular

forces between the glue and the substrate are stronger than the Intermolecular forces between the glue and glue.

By Mk2010 (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0) or GFDL (http://www.gnu.org/copyleft/fdl.html)], via Wikimedia Commons

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For an adhesive to wet a surface, the adhesive should have

For an adhesive to wet a surface, the adhesive should have

a lower surface tension, than the solid’s surface energy (or critical surface tension),

By MesserWoland (own work created in Inkscape) [GFDL (http://www.gnu.org/copyleft/fdl.html), CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/) or CC BY-SA 2.5-2.0-1.0 (http://creativecommons.org/licenses/by-sa/2.5-2.0-1.0)], via Wikimedia Commons

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Adhesive Curing Once the adhesive is applied to the substrate, it

Adhesive Curing

Once the adhesive is applied to the substrate, it will

begin to cure, or form a permanent bond
Different Adhesives have different mechanisms in which the curing takes place

Theilr’s Flickr account – Creative Commons Attribution