The history of rubber goes way back, further than you may realize. From the discovery of its many uses to being an integral part in an ancient civilization’s game, and the accidental spill that transformed rubber into a viable product for dozens of industries, there’s a lot to unpack. Join us as we explore a brief history of rubber.
Ancient Origins and Early Uses
Early Mesoamerican indigenous cultures like the Maya, Aztec, and Olmec (which means “rubber people” in their language) harvested latex sap from the rubber tree Hevea brasiliensis. Through latex, these civilizations discovered its qualities, such as high elasticity and the ability to transmit fluids through connected pores and cracks (known as impermeability). These cultures developed many uses for rubber, including creating waterproof textiles to help withstand rainy and tropical climates; footwear via sandals with rubber soles for wearability over rocky terrains; and its capacity to store liquids like water in tight, protected storage conditions.
One prominent use of rubber during these times was as a ball in a Mesoamerican game similar to racquetball. This ball was not solely made of latex, since this would have made the ball unusable, considering it had to handle contact like bouncing off wall and ground surfaces. It was actually made by combining latex with the juice from the morning glory vine; this mixture improved the ball’s elasticity and toughness. This method of processing a curing agent with rubber was one of the first forms of vulcanization (when rubber is strengthened through a chemical interaction).
Vulcanization and Industry
Fast forward to the 19th century—specifically, 1839—where the type of rubber that we know today was invented by scientist and chemist Charles Goodyear after accidentally spilling a mixture of sulfur and rubber on a hot stove. This resulted in vulcanization, making this new rubber mixture more elastic, stronger, and resistant to temperature conditions like heat and cold. Goodyear named this discovery after the Roman god of fire, Vulcan. It didn’t take long for this process to spread around the globe and revolutionize the manufacturing industry and rubber in general.
The impact of vulcanization cannot be understated. The ability to transform unstable latex into a durable rubber gradually changed how it was used. During the Industrial Revolution, rubber belts and seals increased machine effectiveness in factories; clothing like belts and boots increased in quality as they were made waterproof and more resistant to the cold and heat, meaning they wouldn’t crack or melt in low or high temperatures; and new patents and companies revolved around rubber were developed and opened up.
The Current Age
Today, it’s hard to imagine where we’d be without rubber. In the healthcare field, medical-grade rubber, such as nitrile and silicone, creates tight seals and flexibility for instruments like syringes and catheters. O-rings and seals are especially used in pumps and dialysis machines for sterility. Regarding construction, rubber like ethylene propylene diene monomer (EPDM) is used in roofs to resist ultraviolet light and extreme temperatures. Bridges and buildings use neoprene to reduce vibrations created by traffic and absorb energy from earthquakes; this rubber is known as elastomeric bearings. Rubber panels are used for thermal insulation in pipe wraps, as well as dampening sound and vibrations on floors and walls.
Electronics and technology are also dominated by rubber. Chances are your smartphone has an o-ring or seal, usually made of nitrile, to block dust and moisture from entering the device. These seals are in a range of consumer electronics as well, like headphones and watches, and can make the latter waterproof. And silicone is used in laptop keyboards for its durability and resiliency, making the tech user-friendly. Chances are, whatever device you’re using to read this blog, there’s an o-ring or seal involved.
Looking to the Future
What do the next decades hold for rubber? Consider “smart rubber,” which has characteristics beyond typical insulation and elasticity, like self-healing and conductivity. This rubber can automatically repair small cracks and regain strength, and can act like sensors in electronics through its conductivity. There’s also 3D printing of rubber products; although this type of printing has been around for a while, advances in future technology can improve its customizability and functionality across industries and users. These projections are rooted in 3D-printed rubber’s current ability to be used in electronics and rapid prototyping.
Another field that goes hand-in-hand with growth is healthcare. Rubber plays a part in the technology and advancements that are constantly being made in that sector. Watches and devices that monitor health metrics like heart rate and activity levels can feature silicone seals to help protect internal components; improvements in rubber-based medication-delivery systems; prosthetic limbs and implants using rubber to simulate natural skin and tissue feel and withstand stress, wear, and tear; and surgical robotics using medical-grade silicone and its elasticity to move smoothly. All of these are but a few ways rubber will impact the future.
That’s All, Folks (For Now)
That concludes our brief history of rubber. If you have any questions, ask us here. And if you’d like to work with us on your next project, we’re always happy to help.