Polypropylene is made from propylene, and how to make polyethylene from propylene

nch3ch=ch2——— arrows are written here, and "certain conditions" are written on the arrows)-ch2--ch(ch3)-]n

The molecular formula of polypropylene is: -[CH2--CH(CH3)-]N(- for single bond, - for half bond after breaking; CH3 is attached to CH, but as a branch,)

Method for making polypropylene from propylene:

Slurry method. Polymerization in diluents such as hexane is the earliest industrialized and by far the most produced method. Liquid-phase bulk method.

Polymerization in liquid propylene at 70 and 3 MPa. Gas phase method. Propylene is polymerized in a gaseous state.

The latter two methods do not use diluents, have a short process and low energy consumption. The liquid-phase bulk method has now shown an advantage over the latter.

The polymerization reaction is a direct reaction of the monomer under certain conditions.

Can write catalyst, heating or high temperature.

Generally, it is synthesized by polymerization reaction at high temperature.

Did you know that there is a book called Polymer Chemistry?

I can't tell you about this, so go check the book.

If that doesn't work, check the literature.

Summary. Polyethylene is a polymer formed by polymerization of ethylene monomer, and propylene and ethylene are two different chemicals that cannot be directly formed into polyethylene. To generate polyethylene, you can do the following steps:

1.Ethylene monomer is extracted from oil or natural gas. 2.

Ethylene monomer is polymerized into a polyethylene polymer by polymerization. Polymerization reactions can be performed using catalysts, such as Ziegler-natta catalysts or platinum catalysts, for high- or low-pressure polymerization. 3.

After the polymerization reaction is completed, the polyethylene polymer is made into the desired shape and product through processes such as processing and molding. It is important to note that propylene and ethylene, although two different chemicals, can be converted into each other through a series of chemical reactions. If you want to make polyethylene from propylene, you can first convert propylene to acetaldehyde through an oxidation reaction, then convert acetaldehyde to ethylene through a reduction reaction, and finally polymerize ethylene into polyethylene.

This process involves multiple chemical reactions and conditions and requires more detailed understanding and experimental operation.

Polyethylene is a polymeric collapse formed by the polymerization of ethylene monomer, and octenene and ethylene are two different chemicals that cannot directly form polyethylene. To generate polyethylene, the following steps can be obtained:1

Ethylene monomer is extracted from oil or natural gas. 2.Ethylene monomer is polymerized into a polyethylene polymer by polymerization.

Polymerization reactions can be performed using catalysts, such as Ziegler-natta catalysts or platinum catalysts, for high- or low-pressure polymerization. 3.After the polymerization reaction is completed, the polyethylene polymer is made into the desired shape and product through processes such as processing and molding.

It is important to note that propylene and ethylene, although two different chemicals, can be converted into each other through a series of chemical reactions. If you want to produce polyethylene from propylene, you can first convert propylene to acetaldehyde through oxidation, then acetaldehyde to ethylene through reduction, and finally polymerize ethylene into polyethylene. This process involves multiple chemical reactions and conditions and requires more detailed understanding and experimental operation.

Hope you find the above information helpful<>

1. Woven products: PP resin consumed by woven products has always accounted for a high proportion in China, and is the largest market for polypropylene consumption in China, mainly used for the packaging of grain, fertilizer and cement.

2. Injection molded products: Injection molded products are mainly used in small household appliances, daily necessities, toys, washing machines, automobiles and turnover boxes. In recent years, the proportion of consumption in the field of injection molding has risen rapidly, from 17% in 2006 to 22% in 2011, second only to plastic weaving.

3. Film products: polypropylene film mainly includes BOPP, CPP, ordinary packaging film and finger noise microporous film, etc., BOPP has many excellent characteristics such as light weight, high mechanical strength, non-toxic, transparent, moisture-proof, etc., and is widely used in packaging, electrical, electronic appliances, tape, label film, film, composite and many other fields, among which the packaging industry is the most used.

4. Fiber products: Polypropylene fiber refers to a fiber product made of polypropylene as raw material through melt spinning. Because polypropylene fiber has many excellent properties, it is increasingly widely used in the three major fields of decoration, industry and clothing, and has become the second largest variety of synthetic fibers.

Propylene can undergo free radical polymerization, but the synthetic material properties are not good. Therefore, propylene is generally coordinated polymerized with Ziegler-Natta catalysts. Propylene polymerization reaction produces polypropylene NCH2=CH-CH3 plus polych-coarson—[-ch-c(CH3)-]n

During the polymerization of propylene radicals, the free radicals are easy to extract hydrogen from the propylene molecule to form low-reactive allyl radicals, so no polymer can be obtained.

Ionic polymerization, since the methyl group is the propellant group. It is not easy to anion polymerization, and the push effect of a methyl group is weak, cation polymerization is also difficult, and the active center is easy to isomerize and become a relatively stable structure, so only oligomers can be generated. Pre-mess polymerization is a reaction process in which polymers are synthesized from monomers.

The low molecular weight raw materials with polymerization ability are called monomers, and the polymerization raw materials with large molecular weights are called macromolecular monomers. If the monomer polymerizes to form an oligomer with a low molecular weight, it is called oligomerization, and the product is called oligomerization. The polymerization of a monomer is called homopolymerization, and the product is called homopolymer.

The polymerization of two or more monomers is called copolymerization, and the product is called copolymer.