It has attractive properties like good abrasion resistance, low flammability and emission of smoke and toxic gases. For example: Polyphenylene oxide (PPO), which is obtained from the free-radical, step-growth oxidative coupling polymerization of 2,6-xylenol, has many attractive properties such as high heat distortion and impact strength, chemical stability to mineral and organic acids, and low water absorption. It is used in many consumer products, such as toys, appliances, and telephones. ABS is a light-weight material that exhibits high impact resistance and mechanical toughness. Thermoplastic materials are those materials that are made of polymers linked by intermolecular interactions or van der Waals forces, forming linear or branched structures. Characteristics of Polymers. Major players in the PMMA market are Mitsubishi Rayon (Japan), Arkema SA (France), LG MMA (South Korea), Chi Mei Corp. (Taiwan), Sumimoto Chemical Company Ltd (Japan), Evonik Industries (Germany), BASF (Germany), Dow Chemical Company (U.S.), AkzoNobel (The Netherlands), Quinn Plastics (UK) and Cytec Industries (U.S.). In choosing a resin system the suitability of the physical and chemical properties of the resin for the chosen processing route, matching to the reinforcements and also how the properties of the cured resin will suit the end use of the composites. The main thermoplastic polymers and their properties are presented in Table1. Thermoplastics are much tougher than thermosets, therefore they have much better inter laminar strength and resistance to impact. This also supports its use in coatings of cooking ware. Polypropylene is not as impact-resistant as the polyethylenes (HDPE, LDPE). For many decades, PMMA has been the predominant methacrylic ester produced worldwide. It was originally introduced by Victrex PLC, then ICI (Imperial Chemical Industries) in the early 1980s. It is also converted to flexible forms with the addition of plasticizers, thereby making it useful for items such as hoses, tubing, electrical insulation, coats, jackets and upholstery. They are versatile materials that can be used for anything from plastic carrier bags to high-stress bearings and precision mechanical parts. The temperature and stress state have a profound effect on the molecular arrangement and hence the properties of a polymer. CS1 maint: multiple names: authors list (, "Welcome lgschemistry.org.uk - Justhost.com". Polybenzimidazole (PBI, short for Poly-[2,2’-(m-phenylen)-5,5’-bisbenzimidazole]) fiber is a synthetic fiber with a very high melting point. A thermosetting polymer, resin, or plastic, often called a thermoset, is a polymer that is irreversibly hardened by curing from a soft solid or viscous liquid prepolymer or resin. Polyvinyl chloride (PVC) is a tough, lightweight material that is durable, fairly rigid and versatile, and is resistant to acids and bases. Amorphous and semi-amorphous plastics are less resistant to chemical attack and environmental stress cracking because they lack a crystalline structure. Under the action of sufficient stress, the polymer chains can uncoil and align over a period of time. It is also known as poly and is obtained by the addition polymerisation of ethylene. 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