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Polymers

Chemistry In Pictures

Chemistry in Pictures: SEM smiley

by Brianna Barbu
September 17, 2024
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Most Popular in Materials

A scanning electron microscope image of a collapsed polymer sphere that appars to have a frowning face.
Credit: Arkaprabha Giri/Wenyang Zhao

If this little face looks a little . . . well, deflated, that’s because it literally is. This is a scanning electron microscope image of a hollow polystyrene sphere. When Arkaprabha Giri, a postdoc in Christopher Jones’s lab at Georgia Tech, first made it as part of his research into materials for capturing carbon dioxide from air, the sphere was filled with ethyl acetate solvent from the polymerization. But after Giri removed the solvent, the sphere burst and collapsed into this dejected-looking husk. Giri says he was trying to make rigid spheres, but they turned out hollow after he added a pore-forming ingredient to his polymer recipe.

Submitted by Arkaprabha Giri

Do science. Take pictures. Win money. Enter our photo contest.

See more Chemistry in Pictures.

Chemical & Engineering News
ISSN 0009-2347
Copyright © 2024 American Chemical Society

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