In 1972, George Gray, professor at the University of Hull in the U.K., revolutionized the world we live in by synthesizing a molecule called 5CB, also known as 4-cyano-4-pentylbiphenyl. For the first time, this liquid crystal produced a bright, clear color display at room temperature. Eventually, it led to modern display screens found on many of our home products and appliances: televisions, refrigerators, clock radios, microwaves, thermostats, streaming music players, e-readers, phones, tablets, and laptops. If youre reading this on a flat-screen device, in a sense, youre staring at Grays chemical ingenuity.
This is just one of many scientific innovations that have influenced the course of everyday events since the Age of Enlightenment. Chemistry has significantly shaped the world, right into our very dwellings. All we have to do is walk around our homes to see its effects.
Chemistrys creations have transformed American homes. From the Industrial Revolution to the Digital Age, the chemical industry has not only adapted to lifestyle transitions and shifting consumer demands but also helped shape them.
The world is on the brink of another paradigm shift, and innovations such as 5G telecommunications and the Internet of Things may usher in an unprecedented invention revolution. Cheaper, power-efficient, multifunctional materials are desperately needed to keep up with rapidly evolving advances in smart technology. Turning these ideas into pragmatic and economic realities depends on equally smart and fast-paced innovation from the chemical industry.
As the Age of Digital Information meets a new Age of Automation, the future of a happy home will lie at the intersection of convenience, chemistry innovation, and sustainability, as homeowners demand more performance from ever more eco-friendly, energy-efficient, and interconnected smart-home upgrades. Materials science will play a role in making every aspect of your home more energy efficient, more cost efficient, more comfortable, more livable, notes Jonah Erlebacher, department chair and professor of materials science and engineering at Johns Hopkins University.
REFRIGERATORS To keep meats and fruits cold at home, people had used iceboxesliterally boxes with ice in them. But a new technology was heating up: electric refrigeration. Refrigerators became household staples in the 1950s. Ammonia was among the early refrigerants, but its leaks were toxic. Freon brand refrigerants, patented in the 1930s, became a safer refrigerant choice for many manufacturers.
COAL FURNACES AND STOVES The most readily available type of coal for heating purposes, bituminous coal, was inexpensive but environmentally unfriendly. Burning this coal gave off sulfur dioxide, which led to acid rain. Anthracite coal, on the other hand, doesnt give off tarry hydrocarbon vapors. A popular choice for coal stoves, anthracite provided a safer, low-sulfur option and left no creosote buildup in chimneys.
AIR-CONDITIONING UNITS Freon also worked as a coolant in air conditioners and was used in the more than 1 million units sold in 1953. The accompanying chlorofluorocarbons motivated manufacturers to seek more sustainable solutions.
NON-STICK COOKWARE Looking for refrigerants safer than sulfur dioxide and ammonia, chemist Roy Plunkett stumbled on a happy accident: the white, slippery powder polytetrafluoroethylene (PTFE)trademarked in 1945 as Teflon. By the 1970s, Teflon coatings were being used on nonstick cookware, which slipped its way into millions of homes. At the same time, PTFE also appeared in oils for lubricating internal combustion engines and was used in a variety of automotive treatments and manufacturing applications.
TVs Television became Americas most popular news and entertainment medium, with approximately 48 percent of households housing color sets by the summer of 1971. Because certain light-emitting phosphors inside cathode ray tubes relied on toxic elementssuch as cadmium, a now known carcinogencopper-activated zinc sulfide replaced phosphors.
HEAT PUMPS Solar-powered, absorption-cycle heat pumps debuted in 1973. Relying on the refrigerant cycle and using hot refrigerant gases in the heating process, the heat-pump units could also provide air-conditioning. These pumps seemed to be an ideal tool to lower air pollution and decrease fossil-fuel consumption. (Oil and gas shortages led to two 1970s energy crisesone in 1973, the other in 1979.) By 1978, heat pumps were used in more than 1.4 million U.S. homes.
COMPUTERS The semiconductor industry treated silicon like gold through the early 1990s, as tiny silicon chips etched with integrated circuits performed many functions. As such, industry leaders such as IBM, Apple, and Microsoft soon sought cheaper hardware materials capable of more advanced applications. Chips with aluminum interconnects became the industry standard by the mid-1990s, and in 1997, IBM shocked competitors when it made smaller, faster, cheaper microprocessors out of copper interconnects. Microprocessor speeds increased 15 percent because copper wires are about 40 percent better than aluminum at conducting electricity.
MOBILE PHONES Nickel-metal hydride batteries powered many of the first cellphones. But soon, smaller, lighter, and faster-charging lithium-ion batteries arrivedand to great advantage: Lithium-ion batteries fully charge in one to three hours, compared to the 10 to 12 hours it took to charge the nickel-metal hydride variety.
HEAT VIA NATURAL GAS, ELECTRICITY, AND OIL Cleaner heating fuels like natural gas, electricity, and oil almost entirely replaced coal furnaces. While American homes burned more than 50 million tons of coal in 1950, that amount shrunk to less than 500,000 tons by 2000.
FLAT-SCREEN TVs Plasma displays were the first flat-panel TVs to market, using electrically ionized gases to form the picture. But the process was energy inefficient and had too many limitations: Plasma screens could be stretched to only 64 inches, for instance. Then Gray and his teams aforementioned 5CB discovery came along: colorful, liquid-crystal displays (LCDs) viable at room temperature. Their arrival on the consumer electronics scene sparked a multibillion-dollar industry, rivaling plasma. LCD screens currently use nitrogen trifluoride, which replaced perfluorocarbon.
INSULATION Fiberglass insulation was mandated in home construction back in the 1960s, but recent innovations such as polyurethane spray foamsfluoroproducts rooted in hydrofluoroolefin chemistryincrease home energy efficiency with a low global warming potential. Traditional hydrofluorocarbons contain only a single bond between carbon atoms, while these hydrofluoroolefin products boast a double bond, which breaks apart more readily in the atmosphere. These foam products conform to any shape, reduce air leaks, moisture, and mold, and improve building energy efficiency, comfort, and indoor air quality.
SAFER LAWN AND GARDEN PESTICIDES The U.S. Environmental Protection Agency has approved dozens of nontoxic female insect pheromones, or chemical sex attractants, as active ingredients for pest control. Releasing synthetic concentrations of pheromones into the environment confuses male insects, prevents mating, and reduces the pest population without harming other insects, pets, or humans. Until now, synthetic pheromones have been expensive to produce. But the olefin-metathesis methoda catalytic process in which two compounds exchange ions and a development that won the 2005 Nobel Prize in Chemistryyields mate-disrupting compounds using inexpensive materials such as plant oils and low-molecular-weight alkenes.
Jesal Chopra, Global Business Director at The Chemours Company, shares how chemistry will make life in tomorrows home even easier and more sustainable.
The progression of modern society owes a great deal to science and engineering, and a large part of this evolution is due to the chemistry at work within the home. Your house, like mine, is as much a product of chemical invention as it is of structural engineering and architecture. In fact, while chemistry drives advances across every industry and commercial segment, it is in the home where we can most clearly see modern chemistry innovations at work.
Indeed, the future will be written by this chemistry. This includes the home of the future, which will be a smart home, enabled by artificial intelligence and wireless technology. By using high-speed wired and wireless technology and communications, your future home will prepare itself for your return. Your fridge will order the milk youre running out of, and your washer will do the laundry during off-peak hours for electric rates. This and much more will become common because of chemistry. Consider that Teflon fluoropolymers make smart homes possible at every stage, from integrated circuit manufacture to the communications systems found in smartphones, tablets, and connected devices.
Future homeowners will look for energy efficiency and sustainability. Chemistry makes this possible too. Chemours Teflon fluoropolymers are already part of every stage of home and grid clean-energy generation, from films and coatings that increase solar panel efficiency to battery management systems used to store energy. Not only will new foam-blowing agents and refrigerants such as our portfolio of Opteon products keep our future homes comfortable more efficiently, but they will do so while having zero ozone depletion potential and low global warming potential.
Future large-scale infrastructure and industry will mirror these at-home trends. Connected factories have combined fluoropolymer-enabled communications and robotics to usher in an era of highly efficient market responsiveness and mass customization. Low global warming potential refrigerants are dropping into existing and new cold chain infrastructure. Utility-scale clean energy is cost competitive with fossil-fuel generation, in part because of fluoropolymers and flow-battery solutions that use Nafion membranes. In sum, no matter where you look, high-value chemistry helps to enableand even to definenot just the home of tomorrow but the society that surrounds it.
INTERNET OF THINGS As competition heats up among Amazons Echo, Google Home, and now, Apples HomePod, telecommunications experts are setting up the next generation of 5Gwireless mobile network connectivity (possibly reliant on nitride-based semiconductors), capable of massive machine communication through the Internet of Things. Marco Mezzavilla, a postdoctoral researcher who leads various mmWave-related 5G-research projects at NYU Wireless, is calling for innovation in semiconductor materials. Looking toward the future of communications and chemistry, he sees a huge need for more power-efficient solutions because of the amount of processing required for ultrafast, gigabit-per-second, ultra-low-latency communications. Fluoroproducts are one of those ideal materials that is critical to 5G semiconductors because their low dielectric properties enable high bit-rate communications. With fully integrated smart-home products, automated assistance will immediately alert us to maintenance abnormalities in appliances, toxic substances in our surroundings, and ways to increase energy efficiency.
SOLAR ABSORBING PAINT Besides solar roof shingles, Theres an interest in paint, says Jonah Erlebacher, department chair and professor of materials science and engineering at Johns Hopkins University. Paint in future homes might contain materials that clean the air, filter out pathogens, and absorb solar energy that can actually power the rest of your house, he says.
ELECTRIC, AUTONOMOUS CARS Electric, and eventually autonomous, cars might fill American garages, but manufacturers need energy storage solutions first. Thats why companies such as Tesla are looking to build massive battery facilities, repurposing the lithium-ion battery technology now used in electric cars to also store renewably generated electricity.
CHEMISTRY MAKES IT ALL POSSIBLE. To continue introducing paradigm-shifting products for future homes, industry leaders might best integrate past and present ideologies of chemical innovation while also meeting consumer demands and requirements for sustainability. This may be the winning formula to engineer life-changing home improvements.
The Future of Chemistry: Past Features
Part 1: Shaping the Future, One Molecule at a Time
Part 2: The Reincarnation of Existing Chemical Products
Part 3: Pushing toward Sustainability
Part 4: Around the World in Many Ways with One Product
Read more on how The Chemours Company is advancing the future of homes through chemistry at:chemours.com/future-homes
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