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Polyethene is created through the polymerization of ethene. Under the right conditions of temperature, pressure and catalysis, the double bond of the ethene monomer opens up and many monomers link up to form long chains. Polyethene manufacturing processes are usually categorized into "high pressure" and "low pressure" operations. The former is generally recognized as producing conventional low density polyethene (LDPE) while the latter makes high density (HDPE) polyethene. The difference between these polyethene processes is that LDPE is formed at 1000 - 3000 bar and 80 - 300 degrees C in the presence of minute quantities of oxygen, and HDPE is formed at 10 - 80 bar and 70 - 300 degrees C in the presence of an aluminium-based catalyst.
What else can I help you with?
How many ponds of ethylene to make a pound of polyethylene?
When completely reacted, one pound of ethylene will make one pound of polyethylene, because no atoms are lost or gained in the reaction.
Is polymerize to form polyethylene a chemical or physical?
Polymerization is not a property; it is a type of chemical reaction.
How can you know this is a chemical reaction?
Evidence of a chemical reaction include the following: formation of a precipitate formation of a gas change in temperature change in color
How does methane gas react to form a polyethylene chain?
The monomer of polyethylene is ethylene - H2C=CH2. {eth=2 carbons, ene=a CC double bond} Two methane - H2CH2 or H3CH - molecules condense to form ethane: H3C-CH3 + 2 H+. Another 2 H+ removal, or condensation, gives the -ene H2C=CH2. Polymerization of the -enes is the next step. Via another condensation reaction, a poly-eth-ene appears thusly: H2C=CH|HC=CH|HC=CH|HC=CH|HC=CH|HC... & etcetera.
What is the 2nd observable characteristic of a chemical reaction?
There are many observable characteristics of a chemical reaction. They are: change in temperature formation of a precipitate change in color formation of a gas formation of a new odor disappearance of a solid
How many ponds of ethylene to make a pound of polyethylene?
When completely reacted, one pound of ethylene will make one pound of polyethylene, because no atoms are lost or gained in the reaction.
What type of reaction is used to produce polyethylene from ethylene?
Either addition polymerization or substitution. See also the link below.
Is polymerize to form polyethylene a chemical or physical?
Polymerization is not a property; it is a type of chemical reaction.
Is polymerization to form polyethylene a chemical or physical property?
Polymerization is not a property; it is a type of chemical reaction.
What is the chemical equation for the reaction of ethylene and bromine water?
The chemical equation is:C2H4 + Br2 = C2H4Br2
What is the heat of reaction of ethylene when form polyethylene?
3350 - 4185 J/g for polymerisation of ethylene gas taken from eng-tips.com ref Plastics Materials 5th ed J A Brydson 1989 p198
Give monomers of terylene.?
The monomers of terylene, also known as PET (polyethylene terephthalate), are terephthalic acid and ethylene glycol. These monomers undergo a condensation reaction to form the polymer terylene.
Chemical reactions of ethylene from ethyl alcohol and sulfuric acid?
Ethanol can be dehydrated to form ethylene using concentrated sulfuric acid as a catalyst. Sulfuric acid aids in the removal of water molecules from ethanol, leading to the formation of ethylene gas. This reaction is commonly used in the industrial production of ethylene.
What is the rate constant for formation of ethylene oxide?
The rate constant for the formation of ethylene oxide can vary depending on the reaction conditions, such as temperature, pressure, and catalyst used. It is typically determined experimentally through kinetic studies for the specific reaction being studied.
How can one make polyethylene?
Polyethylene is made through a process called polymerization, where ethylene molecules are chemically bonded together to form long chains. This process typically involves using a catalyst to initiate the reaction and create the polymer.
Is polyethylene a raw material?
No Polyethylene(one of the commonly known plastics) is created through polymerization of ethene (also known as Ethylene). Ethylene is created by steam cracking. Basically mixing really hot steam around (850 C) with ethane, LPGs or light naphthas. Some of the product of the reaction is Ethylene. Naphthas comes from the refining of crude oil and Ethane comes from natural gas.
How can you know this is a chemical reaction?
Evidence of a chemical reaction include the following: formation of a precipitate formation of a gas change in temperature change in color
