The Invention of Plastic

In 1869, John Wesley Hyatt, a printer from New Jersey, stopped in front of an advertisement placed by a billiard ball manufacturer: “Ten thousand dollars to anyone who invents a substitute for ivory.” At the time, ten thousand dollars was equivalent to roughly fifteen years’ wages for a skilled worker — a considerable sum.^[1] But the context behind that advertisement was not merely a matter of cost. To make a single billiard ball required killing one elephant, and the billiards craze that swept the mid-nineteenth century was driving African elephants toward extinction. The fact that the first motivation behind the material that now covers every corner of the globe was “to save the elephants” shows that the history of plastic has been entangled with the environment from the very beginning.

The World Before Plastic: Hitting the Limits of Nature

Before industrialization in the nineteenth century, the range of materials people used in daily life was narrower than one might expect. Wood, metal, glass, ceramics, and animal-derived materials — bone, horn, ivory, tortoiseshell — were essentially the full inventory. The problem was that the Industrial Revolution caused demand for all of these natural materials to surge explosively. For ivory alone, hundreds of thousands of elephants were sacrificed worldwide each year for billiard balls, while hawksbill sea turtles, whose shells furnished fine combs and spectacle frames, were being pushed toward rarity. The depletion of natural resources became visible at an industrial scale for the first time.

Hyatt solved the problem in 1869 by mixing nitrocellulose with camphor and alcohol to develop and patent Celluloid, the first semi-synthetic plastic.^[2] Celluloid found wide application in billiard balls, photographic film, dentures, and piano keys. But it had a fatal flaw: Celluloid was extremely flammable and would combust explosively when exposed to even modest heat.^[3] This was precisely why fires broke out repeatedly in early cinemas when the film stock caught light. Its semi-synthetic nature — Celluloid was processed from plant fibers extracted from cotton, and was therefore not a fully artificial material — also constrained commercial expansion.

The First Fully Synthetic Plastic — Bakelite

In 1907, Belgian-born American chemist Leo Baekeland began his research from an entirely different starting point. He was searching for an insulating material to replace shellac, an expensive natural resin. The rapid expansion of telegraph and telephone networks at the time had created a massive demand for wire insulation, but shellac — harvested from lac insects in Southeast Asia — had limited production capacity.^[4]

After repeated experiments reacting phenol and formaldehyde under high pressure and high temperature, Baekeland succeeded. He filed a patent on July 13, 1907, and was granted US Patent No. 942,699 on December 7, 1909.^[5] Publicly unveiled in February 1909 at a lecture to the American Chemical Society (ACS) in New York, this material was the world’s first fully synthetic plastic, made entirely from components that do not exist in nature.^[6]

The key to Bakelite lay in its thermosetting structure.^[5] Its property of not melting when reheated once cured was precisely what was needed for devices like telephone and radio casings, through which heat and electrical current flowed. The combination of heat resistance and electrical insulation led to Bakelite being dubbed “The Material of a Thousand Uses.”^[7] The electrical and electronics industry of the time faced severe design constraints due to the absence of suitable materials, and the arrival of Bakelite resolved that bottleneck at a stroke. It is for this reason that Baekeland is called “the Father of the Plastics Industry.”^[8]

Materials Born of Chance: The Golden Age of the Plastics Revolution

The 1920s and 1930s were the golden age of plastic. Most of the plastics used most widely today were born in this period, and what is remarkable is that a significant number of them arose from “accidental discoveries.” This pattern reveals how heavily chemical research of the era depended on experimental exploration rather than theory.

Polyethylene (PE) was first synthesized accidentally by German chemist Hans von Pechmann during an experiment in 1898.^[9] A practical synthesis method was then rediscovered by accident in 1933, when Eric Fawcett and Reginald Gibson at Britain’s ICI stumbled upon it under unexpectedly high-pressure conditions during ethylene experiments.^[10] Polyethylene is now the most produced plastic in the world and the primary raw material for plastic bags and packaging.^[11]

PVC (polyvinyl chloride) has a similar story. When it was first produced in 1872, it was too rigid to have commercial value.^[12] In 1926, Waldo Semon of B.F. Goodrich in the United States, while researching ways to bond rubber to metal, discovered that heating PVC in a high-boiling-point solvent transformed it into a flexible, jelly-like substance.^[13] This accident opened up the wide-ranging applications of PVC — building pipes, electrical wire insulation, synthetic leather, and more.

Polystyrene (PS) was developed at BASF’s Ludwigshafen plant (then part of IG Farben) in 1930, and until the mid-1930s it was produced nowhere else in the world.^[14][15] As the technology spread globally, lightweight and transparent polystyrene became synonymous with packaging materials and insulation.

Nylon, by contrast, was not the product of chance but of deliberate design. On February 28, 1935, Wallace Carothers and his team at DuPont in the United States first synthesized polyamide 6-6 from hexamethylenediamine and adipic acid.^[16] DuPont promoted nylon as “the first man-made organic fiber derived entirely from new materials of mineral origin.”^[17] When nylon stockings went on sale in 1940, long queues formed outside department stores, and four million pairs were sold on the first day alone.^[18] Carothers’s personal life ended in tragedy — he took his own life in 1937, suffering from severe depression — but the synthetic fiber research he initiated continued into polyester and spandex, transforming the twentieth-century apparel industry at its roots.^[19]

The Second World War accelerated all of these trends. As natural rubber and metals were channeled to the front lines, civilian industry had to find substitute materials. Nylon went into parachutes and uniforms; acrylic (Plexiglas) became cockpit windows on aircraft; polyethylene was used as radar insulation. The war was brutal, but the plastic production technologies accumulated through it laid the foundation for the explosion in consumer goods markets that followed.

How This Material Reshaped the Structure of Daily Life

After the war, as munitions factories converted to civilian use, plastic spread rapidly into every area of life. But to summarize this change simply as “life became more convenient” is to tell only half the story. The more important change was that the underlying cost structure shifted fundamentally.

Products that would have been expensive if made from iron or glass became universally affordable thanks to plastic. In medicine, the introduction of disposable syringes and blood bags dramatically reduced cross-contamination from reused equipment and directly contributed to improving access to healthcare. Plastic’s role as a material that goes inside the human body — artificial joints, artificial heart valves, dialysis tubing — continues to expand today. In aerospace, replacing metal components with plastic led to lighter aircraft, delivering meaningful improvements in both fuel efficiency and carbon emissions. In everyday consumer goods, the mass production of plastic parts was one of the key reasons refrigerators, washing machines, radios, and televisions became accessible to middle-class households.

The Shadow of Plastic and Its Future

But the very greatest strength of plastic — that it does not decompose — came back as its greatest threat. Approximately 5 to 12.7 million tonnes of plastic enter the ocean every year, a flow equivalent to one truckload per minute.^[20] Eighty-eight percent of marine species are negatively affected by plastic,^[21] and microplastics (5mm or smaller), broken down from larger pieces and traveling up the food chain, have begun showing up in human blood and placentas.^[22] According to a warning from WWF, the concentration of ocean microplastics could quadruple by 2050.^[23]

The irony is that the solutions to this problem are also emerging from chemistry. Scientists are simultaneously pursuing bioplastics, biodegradable plastics, and chemical recycling technologies that can convert plastic back into its raw materials. Biodegradable materials such as polybutylene succinate (PBS) are broken down by soil microorganisms and are regarded as strong candidates to replace conventional plastics.^[24] Meanwhile, researchers have developed methods to make high-performance bioplastic films from avocado skins and stale bread.^[25]

There is something worth noting here. Just as Hyatt in the nineteenth century searched for a material to replace ivory, today’s bioplastics research is caught in the same structural logic: the unsustainability of existing materials drives new chemistry. Just as Celluloid used cotton instead of elephants as its raw material, bioplastics use plant sugars instead of fossil fuels. The names of the materials change, but the underlying structure — humanity borrowing raw materials from nature — remains unchanged.

The history of plastic is the most compressed illustration, spanning 155 years, of what possibilities and what costs this structure generates. The fact that an invention begun to save the elephants has now come to threaten entire ocean ecosystems quietly testifies that no technological solution is complete unless it designs for its own long-term consequences.