Poly(ethyl methacrylate) (PEMA) is a synthetic polymer made from the polymerization of ethyl methacrylate monomers. It is a member of the methacrylate family, which includes various acrylic polymers, and is known for its versatility and utility in a variety of applications. ### Properties of Poly(ethyl methacrylate): 1. **Transparency**: PEMA is typically clear and can be made to have various levels of transparency and color.
Polyallylamine hydrochloride (PAH) is a water-soluble, cationic polymer made from the polymerization of allylamine. It is often used in various applications due to its unique properties, including its ability to act as a polyelectrolyte and its compatibility with a wide range of materials.
PVC clothing is made from polyvinyl chloride, a type of plastic that is often used in various fashion items. PVC is a synthetic material that can be produced in a flexible form, giving it the ability to mimic the appearance of leather or other materials. PVC clothing can include items such as dresses, jackets, pants, and accessories.
Pearloid is a synthetic material that mimics the appearance of mother-of-pearl, a natural substance produced by mollusks. It is commonly made from celluloid, a type of plastic, and is often used in various applications, including the production of musical instrument parts, decorative items, and jewelry. In the context of musical instruments, pearloid is frequently used for pickguards, inlays, and knobs, adding an aesthetic appeal to guitars, violins, and other string instruments.
PharMed can refer to several different entities depending on the context, but it is commonly associated with: 1. **PharMed® Technology**: A brand associated with specific medical or pharmaceutical products, often linked to high-quality, durable polymer technology used in medical devices and systems. 2. **Pharmanagement or Pharmaceutical Medicine**: Sometimes, it refers to pharmaceutical management or organizations involved in the pharmaceutical industry, including drug development, management, and healthcare services.
Plastic is a synthetic or semi-synthetic material made from polymers, which are large molecules composed of repeating structural units known as monomers. These polymers can be derived from natural sources (like cellulose) or synthesized from petroleum, natural gas, or other chemical feedstocks. Plastics are characterized by their versatility, durability, and malleability, which allow them to be molded into various shapes and forms.
Plastic clothing refers to garments made from synthetic materials derived from plastic polymers. These materials can include various types of plastics, such as polyethylene, polypropylene, polyester, and nylon, among others. Plastic clothing often features characteristics such as water resistance, durability, and ease of care, making it suitable for a range of applications, from fashion to functional wear.
The Fundamental Theorem of Poker, formulated by poker player David Sklansky, illustrates a key principle for playing the game optimally. The theorem states that the decisions made in poker should be based on the cards that players hold relative to their opponents' potential hands, while also considering the actions taken and information revealed during the game. In simple terms, the theorem suggests that: 1. **Playing Your Cards vs.
Plastic joining refers to various techniques and processes used to bond or assemble plastic materials together. This can involve different methods such as welding, adhesive bonding, mechanical fastening, or the use of solvent. Plastic joining is particularly important in manufacturing, assembly, and repair processes in industries like automotive, electronics, and consumer goods. Here are some common plastic joining methods: 1. **Plastic Welding**: This process involves heating the plastic materials to their melting point and fusing them together.
Plastic optical fiber (POF) is a type of optical fiber that uses polymeric materials instead of glass to transmit light signals. POF is typically made from a core of polymethyl methacrylate (PMMA) or a similar polymer, with a cladding that has a lower refractive index, allowing light to be guided along the core through total internal reflection.
Plastic roads refer to road surfaces that incorporate plastic waste or recycled plastic materials as part of their construction. This innovative approach aims to address two significant issues: the growing problem of plastic waste and the need for sustainable infrastructure solutions. Here are some key features of plastic roads: 1. **Material Composition**: Plastic roads can be made using various types of recycled plastics, such as polyethylene, polypropylene, and polyvinyl chloride (PVC).
The Plastics Historical Society (PHS) is an organization dedicated to preserving and promoting the history of plastics and the plastics industry. Founded in the United States, it aims to document the development, applications, and impact of plastic materials throughout history. The society often engages in activities such as collecting artifacts, archival materials, and literature related to plastics, as well as organizing conferences, lectures, and exhibitions focused on the evolution and significance of plastics in society.
The great icosihemidodecahedron is a type of Archimedean solid, which is a convex polyhedron characterized by having regular polygons as its faces and exhibiting a high degree of symmetry. Specifically, it is one of the non-convex uniform polyhedra.
Polyolefin is a type of polymer derived from olefins (alkenes), which are hydrocarbons that contain at least one carbon-to-carbon double bond. The most common polyolefins are polyethylene (PE) and polypropylene (PP), which are produced through the polymerization of ethylene and propylene monomers, respectively. Polyolefins are characterized by their chemical resistance, low density, flexibility, and durability.
Polyvinyl chloride (PVC) is a synthetic plastic polymer made from the polymerization of vinyl chloride monomer (VCM). It is one of the most widely produced synthetic plastic polymers in the world. PVC can be rigid or flexible, depending on the presence of plasticizers and other additives. ### Properties of PVC: - **Durability**: PVC is resistant to environmental degradation, chemicals, and corrosion, making it suitable for a variety of applications.
Polyvinyl nitrate (PVN) is a synthetic polymer formed from the polymerization of vinyl nitrate monomers. It is a type of nitrated polymer that contains nitrate functional groups within its structure. Like other nitrated polymers, PVN can exhibit properties that make it suitable for specific applications, particularly in the areas of energetic materials, explosives, or propellants.
A prepolymer is a partially polymerized compound that serves as an intermediate in the production of polymers. It is a low-molecular-weight material that can react with other chemicals to form a higher molecular weight polymer. Prepolymers are often used in the manufacturing of polyurethane, epoxy, and other types of thermosetting and thermoplastic materials.
The timeline of plastic development outlines the key milestones in the creation and evolution of plastics from the 19th century to the present. Here’s a summary of major events and innovations in the history of plastics: ### 19th Century - **1830s**: The first synthetic resin is created by Scottish chemist Alexander Parkes, who unravels a material he calls "Parkesine," derived from cellulose.
Trinseo is a global materials company that specializes in the production of plastics, latex binders, and synthetic rubber. It was formed in 2010 as a spin-off from the chemical company Dow Chemical. Trinseo offers a range of products used in various industries, including automotive, packaging, consumer goods, and construction. The company is known for its focus on sustainability and innovation, working to develop materials that are not only high-performance but also environmentally friendly.
Tritan copolyester is a type of plastic that is known for its toughness, clarity, and resistance to impact. It is produced by Eastman Chemical Company and is often used in a variety of applications, including beverage containers, food storage, and other consumer products.