Polypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications. It is produced via chain-growth polymerization from the monomer propylene. Polypropylene belongs to the group of polyolefins and is partially crystalline and non-polar.Its properties are similar to polyethylene, but it is slightly harder and more heat resistant.
Chemical reaction - Chemical reaction - Polymerization reactions: Polymers are high-molecular-weight compounds, fashioned by the aggregation of many smaller molecules called monomers. The plastics that have so changed society and the natural and synthetic fibres used in clothing are polymers. There are two basic ways to form polymers: (a) linking small molecules together, a type of addition.
Write an equation to show the complete combustion of methanethiol. State why calcium oxide can be used to remove the sulfur-containing product of this combustion reaction. State one pollution problem that is caused by the release of this sulfur-containing product into the atmosphere.Ionic polymerization therefore tends to produce a more regular polymer, with less branching along the backbone, and more controlled tacticity. Because the intermediates involved in ionic polymerization reactions can't combine with one another, chain termination only occurs when the growing chain reacts with impurities or reagents that can be specifically added to control the rate of chain growth.When many molecules of a simple compound join together, the product is termed a polymer and the process polymerization. The simple compounds whose molecules join together to form the polymers are called monomers. The polymer is a chain of atoms, providing a backbone, to which atoms or groups of atoms are joined.
The standard enthalpy of formation of propene c3h6 is 20.6 kj per mole What is the heat of combustion of one mole of c3h6 the heats of formation of co2g and h2ol are -394 kjmole and -285.8?Read More
Answer to write an equation that represents the formation of a part of the polystyrene polymer from three of the monomer units.Read More
CHAPTER-5 POLYMERIZATION SEMESTER -1 Questions: 1.Write the balanced chemical equation for the formation of polyethene and polypropene. 2.What are the differences between thermoplastic and thermosetting plastic? Questions: 1.Write the balanced chemical.Read More
The catalyst generally used is a mixture of copper(ll) and potassium chlorides, deposited on alumina. As the reaction is highly exothermic, the reactor vessel is cooled to give the optimum reaction temperature and to reduce unwanted by-product formation of, for example, chloroethane and 1,1,1,2-tetrachloroethane. 95% conversion of ethene to 1,2-dichloroethane is obtained.Read More
Free-radical polymerization (FRP) is a method of polymerization by which a polymer forms by the successive addition of free-radical building blocks. Free radicals can be formed by a number of different mechanisms, usually involving separate initiator molecules. Following its generation, the initiating free radical adds (nonradical) monomer units, thereby growing the polymer chain.Read More
Write a balanced equation for each of the processes below. Use oxidation numbers to show that each process is a redox reaction. a Combustion of ethanol b Decomposition of hydrogen peroxide to water and oxygen Posted 8 months ago Posted 8 months ago.Read More
The use of polypropylene in everyday applications occurs because of how versatile this plastic is. For example, it has a high melting point compared to similarly weighted plastics. As a result, this product works very well for use in food containers where temperatures can reach high levels — such as microwaves and in dishwashers.Read More
The installation of catalytic converters in car exhaust systems can reduce the from ELECTRONIC EE2108 at City University of Hong Kong.Read More
What is Polypropylene (PP), and What is it Used For? Polypropylene (PP) is a thermoplastic “addition polymer” made from the combination of propylene monomers. It is used in a variety of applications to include packaging for consumer products, plastic parts for various industries including the automotive industry, special devices like living hinges, and textiles.Read More
Write an equation for the reaction that occurs between an aqueous solution of cobalt(II) sulfate and an excess of aqueous diaminoethane. Draw a diagram to show the shape of and bonding in the complex product. Write an equation for the reaction that would occur if the complex product of this reaction were allowed to stand in contact with oxygen gas.Read More