By John Brennan, Updated Mar 24, 2022
Synthetic polymers have become indispensable to modern life, powering everything from household goods to critical infrastructure. While their convenience and performance are undeniable, these materials also pose significant challenges related to resource use and environmental persistence.
These compounds appear in surprising places. For instance, the methyl 2‑cyanopropenoate in superglue polymerizes into a tough film, RTV silicone hardens to form durable gaskets for automotive use, and nylon is the backbone of stockings and industrial ropes. Polyesters weave through clothing, polyethylene lines shopping bags, PVC constructs plumbing systems, and rubber gives tires their grip.
Polymers are prized for their strength, flexibility, chemical inertness, and resistivity. A prime example is ABS (acrylonitrile/butadiene/styrene) copolymer, which is both hard and flexible, making it ideal for car bumpers and camera cases. Polystyrene, another common polymer, can be easily molded into items such as plastic cutlery, while its expanded foam form—known as Styrofoam—provides excellent thermal insulation for disposable beverage containers.
Today’s polymers are largely derived from crude‑oil‑based hydrocarbons like ethylene and 1,3‑butadiene. However, oil reserves are finite. In March 2011, economists at HSBC warned that, assuming no major new discoveries, the world has less than 50 years of oil left at current consumption rates—an assertion reported by the New York Times. As polymer production further depletes this limited supply, the industry must pivot to alternative feedstocks to sustain future growth.
The very chemical inertness that gives polymers their durability also makes them persistent in the environment. A 2007 study cited by Slate estimates that a single plastic bag can take up to 500 years to break down. When discarded, these resilient materials can accumulate as litter, leaching into waterways and threatening wildlife.
Balancing the benefits of synthetic polymers with their environmental costs requires ongoing innovation in both material design and waste management.
