Salt in Glue

 


The search for stronger more adaptable adhesives is going on. Researchers have added a dash of salt to two special Polymer ingredients called polyzwitterions. (P PZLs).  The work was published in the Journal of the American Chemical Society. 

A team was led by Hoyong Chung, an associate professor at the Department of Chemical and Biomedical Engineering Engineering at FAMU-–FSU College of Engineering.

The scientist created a new adhesive by using natural attraction between positive and negative charged materials.

Chung reports, “ We want to create stronger and more versatile adhesive using a strategy involving electrostatic interactions. Our research centers around two special polymers, called PZLs, with the goal of getting them to bond more effectively.”

Scientists compared bottlebrush polymers to straight chain polymers. Bottle brush have branches coming off the main chain wall straight chains are linear. The different shapes can improve the physical properties.

One study finds that simply by adding sodium chloride, the brittle polymers were transmitted into strong and flexible polymers. Most adhesive can stretch a lot or be strong, it’s rare to find one that does both. The amount of salt is important to making the adhesive stretchy but strong.

Chung explains, “ The initial key to our discovery lies in the Sophisticated and precise design and synthesis Multi functional polymers. This new polymer could have wide reaching impacts across several industries, offering a way to taylor the toughness and flexibility of adhesive with precision. The finding challenges previous held beliefs about adhesion and salt.

Chung worked with Biswajit Saha. Saha Is a postdoctoral researcher at FAMU-FSU College of Engineering. He summarizes, “ Our discovery shows that adding salt could be a key to making and adhesive that is both strong and flexible. We believe that the study provides a steppingstone towards a long-term goal of developing ideal adhesives.”


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