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SCIENCE · AMERICAS

Plastic Invented

1907 AD

In 1907, the Belgian-born chemist Leo Baekeland, working in the United States, developed Bakelite, the first fully synthetic plastic to achieve wide commercial success. Made from phenol and formaldehyde, it could be molded into almost any shape and then set permanently, resisting heat, electricity and many chemicals. Its arrival marked the start of the age of synthetic materials, in which manufacturers were no longer limited to what nature supplied.

Baekeland was not the first to experiment with plastics. In the mid-nineteenth century, Alexander Parkes had produced Parkesine, and John Wesley Hyatt had developed celluloid, a material made from modified cellulose that was used for items such as billiard balls and film. These, however, were semi-synthetic, derived from plant matter, and celluloid was notoriously flammable. Meanwhile, industries such as electrical manufacturing needed a good insulator, and natural shellac, the insect-derived resin then widely used, was expensive and limited in supply. Baekeland had already made a fortune from Velox, a photographic paper he sold to George Eastman, which gave him the means to pursue independent research in a home laboratory in Yonkers, New York.

Chemists had long observed that mixing phenol and formaldehyde produced a hard, useless residue, and others had tried to tame the reaction. Baekeland's achievement was to control it. Using a pressurized vessel he called the Bakelizer, he found he could apply heat and pressure to make a resin that first flowed, then hardened irreversibly. This made it a thermosetting plastic: unlike celluloid, it would not soften again when reheated. He announced the material publicly in 1909, and the General Bakelite Company was established soon after.

The consequences were considerable. Bakelite found its way into electrical insulators, radio and telephone housings, automobile parts, pipe stems, jewelry and kitchenware. Its low cost and moldability suited mass production, and it helped shape the look of early twentieth-century consumer goods. The name itself became shorthand for the new possibilities of chemistry, and the material was sometimes promoted as "the material of a thousand uses."

Bakelite's deeper legacy lies in what followed. It demonstrated that chemists could design materials with chosen properties, encouraging research into polymers that later produced nylon, polystyrene, polyethylene and many others. Plastics became central to modern medicine, packaging, transport and electronics. They also brought lasting problems, since many types persist in the environment for very long periods, and plastic waste is now a major global concern. Bakelite itself has largely been replaced in everyday use, but it remains a collectible design icon and a milestone in the history of materials science.

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