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Home > News > Machinery & Chemical

Scientists able to transform plastic waste into chemical reagents

Source：Adsale Plastics Network Date ：2024-01-10 Editor ：RC
Copyright： This article was originally written/edited by Adsale Plastics Network (AdsaleCPRJ.com), republishing and excerpting are not allowed without permission. For any copyright infringement, we will pursue legal liability in accordance with the law.

A research team at the Institute for Chemical Reaction Design and Discovery from Hokkaido University developed a method that uses common plastic materials instead of potentially explosive compounds to initiate radical chain reactions.


Hokkaido Uni plastic waste radical chain reaction_480.jpg

Artistic depiction of extremely reactive molecules called radicals being generated from plastic fibers.

 

This approach significantly increases the safety of the process while also reuse common plastics such as polyethylene and polyvinyl acetate.

 

Innovative and safe initiation

 

The process utilizes a ball mill, a machine that rapidly shakes a steel ball inside a steel jar to mix solid chemicals. When the call slams into the plastic, mechanical force breaks a chemical bond to form radicals, which have a highly reactive, unbonded electron.

 

These radicals facilitate a self-sustaining chain reaction that promotes dehalogenation, the replacement of a halogen atom with a hydrogen atom, of organic halides.


Hokkaido Uni plastic waste radical chain reaction_explain_500.jpg

General scheme for using mechanical force to trigger a radical chain reaction (top) and shreds of a grocery bag used to initiate a reaction in a ball mill jar.

 

Detoxify hazardous chemicals

 

The reuse of waste plastic was demonstrated by adding plastic shreds of a common grocery bag to the ball mill jar, which successfully carried out the reaction.

 

The team also showed this method can be applied to the treatment of highly toxic polyhalogenated compounds, which are widely used in industry. Polyethylene was employed to initiate a radical reaction that removed multiple halogen atoms from a compound commonly used as a flame retardant, thus reducing its toxicity.

 

“The use of commodity plastics as chemical reagents is a completely new perspective on organic synthesis,” explained Associate Professor Koji Kubota.

 

These findings have been published in the Journal of the American Chemical Society.


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Source：Adsale Plastics Network Date ：2024-01-10 Editor ：RC
Copyright： This article was originally written/edited by Adsale Plastics Network (AdsaleCPRJ.com), republishing and excerpting are not allowed without permission. For any copyright infringement, we will pursue legal liability in accordance with the law.

A research team at the Institute for Chemical Reaction Design and Discovery from Hokkaido University developed a method that uses common plastic materials instead of potentially explosive compounds to initiate radical chain reactions.


Hokkaido Uni plastic waste radical chain reaction_480.jpg

Artistic depiction of extremely reactive molecules called radicals being generated from plastic fibers.

 

This approach significantly increases the safety of the process while also reuse common plastics such as polyethylene and polyvinyl acetate.

 

Innovative and safe initiation

 

The process utilizes a ball mill, a machine that rapidly shakes a steel ball inside a steel jar to mix solid chemicals. When the call slams into the plastic, mechanical force breaks a chemical bond to form radicals, which have a highly reactive, unbonded electron.

 

These radicals facilitate a self-sustaining chain reaction that promotes dehalogenation, the replacement of a halogen atom with a hydrogen atom, of organic halides.


Hokkaido Uni plastic waste radical chain reaction_explain_500.jpg

General scheme for using mechanical force to trigger a radical chain reaction (top) and shreds of a grocery bag used to initiate a reaction in a ball mill jar.

 

Detoxify hazardous chemicals

 

The reuse of waste plastic was demonstrated by adding plastic shreds of a common grocery bag to the ball mill jar, which successfully carried out the reaction.

 

The team also showed this method can be applied to the treatment of highly toxic polyhalogenated compounds, which are widely used in industry. Polyethylene was employed to initiate a radical reaction that removed multiple halogen atoms from a compound commonly used as a flame retardant, thus reducing its toxicity.

 

“The use of commodity plastics as chemical reagents is a completely new perspective on organic synthesis,” explained Associate Professor Koji Kubota.

 

These findings have been published in the Journal of the American Chemical Society.


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Scientists able to transform plastic waste into chemical reagents

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