A <a href="https://www.mid-day.com/lifestyle/health-and-fitness/article/portrayal-of-heart-attacks-in-hollywood-movies-misleading-researchers-23584593" target="_blank" rel="none noopener">new plastic</a> stays strong during use, yet breaks down rapidly in natural settings without leaving microscopic debris. It uses two polymers.
One comes from carboxymethyl cellulose derived from wood-pulp. The other is made from positively charged polyethylene-imine guanidinium ions.&nbsp;
When mixed the negatively charged cellulose and positively charged ions attract each other, giving the plastic its strength. In salt water, those <a href="https://www.mid-day.com/lifestyle/health-and-fitness/article/german-researchers-identify-gene-behind-schizophrenia-mental-illnesses-23603374" target="_blank" rel="none noopener">salt bridges</a> break apart, triggering decomposition.
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When mixed the negatively charged cellulose and positively charged ions attract each other, giving the plastic its strength. In salt water, those salt bridges break apart, triggering decomposition

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Home / News / World News / Article / New bio-plastic decomposes rapidly in seawater, study finds