Historical events timeline.
Olmec and later Mesoamerican peoples use natural latex from rubber trees to make balls, figurines, and waterproofing. #polymer #history
Chinese artisans use lacquer (urushiol) from tree sap as a natural polymer coating for wood and other materials. #polymer #history
Ancient Egyptians use collagen-based animal glues for woodworking and attaching pigments. #polymer #history
Roman author Pliny the Elder describes rubber obtained from the 'Ficus elastica' tree, noting its elasticity and water resistance. #polymer #history
Christopher Columbus observes indigenous people in Haiti playing with rubber balls, introducing natural rubber to Europe. #polymer #history
Charles Goodyear accidentally discovers that heating natural rubber with sulfur creates a durable, elastic material (vulcanized rubber), enabling widespread commercial use. #polymer #chemistry
Christian Friedrich Schönbein treats cellulose with nitric acid to produce nitrocellulose, an early semi-synthetic polymer used in explosives and later as a plastic. #polymer #chemistry
Alexander Parkes displays Parkesine, made from nitrocellulose and camphor, at the Great International Exhibition in London. It is considered the first man-made plastic. #polymer #history
John Wesley Hyatt develops celluloid, a thermoplastic material from nitrocellulose and camphor, used for billiard balls, film, and dental plates. #polymer #chemistry
Hilaire de Chardonnet patents artificial silk (rayon) made from nitrocellulose, the first commercial synthetic fiber. #polymer #textiles
Leo Baekeland synthesizes Bakelite, the first fully synthetic thermosetting plastic made from phenol and formaldehyde, marking the birth of the modern plastics industry. #polymer #chemistry
Hermann Staudinger proposes that polymers are long chains of repeating units held together by covalent bonds, challenging the prevailing colloidal theory. #polymer #science
Hermann Staudinger publishes a seminal paper 'Über Polymerisation' outlining the macromolecular theory, laying the foundation for polymer chemistry. #polymer #chemistry
Hermann Staudinger provides experimental evidence for macromolecules through viscosity and filtration studies, leading to widespread acceptance. #polymer #science
Wallace Carothers begins working at DuPont, where he leads research that leads to the invention of neoprene and nylon. #polymer #chemistry
Wallace Carothers and his team synthesize neoprene (polychloroprene), the first successful synthetic rubber, used for oil-resistant applications. #polymer #chemistry
Wallace Carothers invents nylon, the first synthetic fiber made from polyamide, revolutionizing textiles and industry. #polymer #textiles
Low-density polyethylene (LDPE) is first produced by Imperial Chemical Industries (ICI) using high-pressure processes, becoming a major packaging material. #polymer #chemistry
Karl Ziegler discovers catalysts that enable the synthesis of high-density polyethylene (HDPE) and other polyolefins at low pressure, revolutionizing polymer production. #polymer #chemistry
Giulio Natta expands Ziegler's work to produce isotactic polypropylene, a highly crystalline and useful polymer. #polymer #chemistry
Paul Flory establishes the thermodynamic theory of polymer solutions (Flory-Huggins theory), providing a theoretical framework for polymer physics. #polymer #science
General Electric introduces polycarbonate (Lexan), a transparent and impact-resistant thermoplastic used in eyewear, electronics, and automotive. #polymer #materials
Karl Ziegler and Giulio Natta receive the Nobel Prize in Chemistry for their discoveries in the field of high polymers and catalysis. #polymer #science
Stephanie Kwolek at DuPont discovers Kevlar, a para-aramid synthetic fiber with exceptional strength-to-weight ratio, used in bulletproof vests and composites. #polymer #materials
Hideki Shirakawa, Alan MacDiarmid, and Alan Heeger synthesize polyacetylene and demonstrate high electrical conductivity when doped, founding conducting polymer research. #polymer #science
PET is first used for carbonated beverage bottles, revolutionizing packaging due to its clarity, strength, and recyclability. #polymer #packaging
Shirakawa, MacDiarmid, and Heeger publish their results on iodine-doped polyacetylene, achieving metallic conductivity and paving the way for organic electronics. #polymer #science
Kary Mullis invents PCR, a method using DNA polymerase to amplify DNA sequences, transforming molecular biology and diagnostics. #polymer #biotech
Development of poly(ethylene glycol) (PEG) conjugation (PEGylation) to improve drug solubility and half-life, first approved for clinical use. #polymer #biomedical
Harold Kroto, James Heath, Sean O'Brien, Robert Curl, and Richard Smalley discover fullerenes (C60), carbon allotropes with polymer-like structures, leading to new materials. #polymer #chemistry
Richard Friend and colleagues at Cambridge demonstrate the first polymer LED using poly(p-phenylene vinylene) (PPV), launching plastic electronics. #polymer #electronics
Sumio Iijima discovers multi-walled carbon nanotubes, which have exceptional mechanical and electrical properties, promising for polymer composites. #polymer #nanotech
Shirakawa, MacDiarmid, and Heeger receive the Nobel Prize in Chemistry for the discovery and development of conductive polymers. #polymer #science
ATRP (atom transfer radical polymerization) and RAFT (reversible addition-fragmentation chain transfer) become widely adopted for precise polymer synthesis. #polymer #chemistry
Andre Geim and Konstantin Novoselov isolate graphene, a single-layer carbon material, opening up new opportunities for polymer nanocomposites. #polymer #materials
Researchers at the University of Illinois develop self-healing polymer materials that can repair cracks autonomously using embedded microcapsules. #polymer #materials
RepRap project introduces open-source 3D printing using polylactic acid (PLA) filaments, democratizing additive manufacturing. #polymer #technology
Organic solar cells using conjugated polymers achieve 10% power conversion efficiency, spurring research into flexible solar panels. #polymer #energy
Development of biodegradable polymer nanocomposites for bone scaffolds and implants, integrating polymers with bioactive ceramics. #polymer #biomedical
New catalytic methods for depolymerizing plastics like PET and polyolefins into monomers enable circular economy for polymers. #polymer #environment
Braskem and other companies scale up production of biobased polyethylene from ethanol derived from sugarcane, reducing carbon footprint. #polymer #sustainability
Artificial intelligence and machine learning models are applied to predict polymer properties and accelerate discovery of new materials. #polymer #AI