Polymers in Extreme Environments

 


Polymers have gained notoriety because of their use in wearable electronics. While they are flexible and lightweight, their low electrical conductivity is a major drawback.  Scientists have improved conductivity and are working on performance degradation in extreme environments.  

A study from the Korea Institute of Science and Technology (KIST) was published as a paper in the journal Advanced Functional Materials. The research is attracting attention as a way to develop next generation high performance chemical sensors. 

The scientists used the ionic pendant group introduced into polymer structures. It synthesized conjugated polymers that can easily dissolve into eco-friendly solvents. The possibility of applications will bring improvements to wearable devices, portable electronics and other devices that can operate reliably in extreme environments. 

While the old polymers use toxic solvents to dissolve, new polymers improve electrical conductivity through the binding of ionic species and electronic charge carriers. By mixing anions and cations into the polymers, scientists increased the density and mobility of the charge carrier. They optimized conductivity and stability. The new polymer was highly durable in environments with 80% humidity and temps up to 200°C. 

Dr. Jang Ji-soo is from KIST. He states, "The sensors developed in this research go beyond simple chemical sensors and can bring about revolutionary changes in various applications."

Professor Jun woo Lee is first author of the study. He summarizes, "In particular, it can be used as a life saving material for those who work in extreme environments, such as firefighters who need to detect harmful gases at fire scenes and soldiers who are exposed to chemical weapons in wartime."


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