What is the formula of polymer?
Table of Contents
- 1 What is the formula of polymer?
- 2 Which is not true about polymers *?
- 3 Why are plastic called polymers?
- 4 Which is not about polymers?
- 5 Why is the chemical formula for polymers written with an n?
- 6 What is the repeating structural unit of a polymer?
- 7 What are addition polymers or chain growth polymers?
What is the formula of polymer?
Some Common Addition Polymers
| Name(s) | Formula | Monomer |
|---|---|---|
| Polyethylene high density (HDPE) | –(CH2-CH2)n– | ethylene CH2=CH2 |
| Polypropylene (PP) different grades | –[CH2-CH(CH3)]n– | propylene CH2=CHCH3 |
| Poly(vinyl chloride) (PVC) | –(CH2-CHCl)n– | vinyl chloride CH2=CHCl |
| Poly(vinylidene chloride) (Saran A) | –(CH2-CCl2)n– | vinylidene chloride CH2=CCl2 |
Which is not true about polymers *?
Polymers do not carry charge.
How do you know if something is a polymer?
The word polymer represents any unspecified number of monomer units – just any amount greater than one [source: Britannica]. The number of bonds created by the monomers dictates the resulting chemical structure of the polymer. If a monomer bonds with only two other molecules, the result is a chain-like structure.
Why are plastic called polymers?
Plastics are considered polymers because, like polymers, plastics are high molecular weight compounds containing several repeating units. These repeating units are the basic molecules called monomers. Polythene contains more than 50000 monomers linked together to form a long chain.
Which is not about polymers?
Non-Polymers Examples of materials which are not polymers include: Elements. Metals. Ionic compounds, such as salt.
Is Silk a polymer?
Silk is a natural polymer originating from various insect and spider species. It is composed of two different proteins, sericin and fibroin, among which fibroin is an FDA-approved material for some medical devices.
Why is the chemical formula for polymers written with an n?
Because a polymer formula can be written quite directly and in quite a succinct manner. Polyethylene? [CH2]n. It is a repeating string of CH2 units, so rather than writing out CH2-CH2-CH2-CH2… ad nauseum, we substitute the “n”. Polypropylene? CH2-CH (CH3)-CH2-CH (CH3)… Every other CH2 is replaced with a CH3 methyl group. Polyvinylchloride?
What is the repeating structural unit of a polymer?
The repeating structural unit of most simple polymers not only reflects the monomer (s) from which the polymers are constructed, but also provides a concise means for drawing structures to represent these macromolecules. For polyethylene, arguably the simplest polymer, this is demonstrated by the following equation.
How do you determine the chemical formula of a polypeptide?
When you are talking about polypeptides (protein) translated from a particular strand of DNA, then you essentially know exactly what the amino acid sequence and length is for each polypeptide chain you make, so you can define an exact chemical formula – although it might be a pretty long formula depending on the protein that was made. (usual
What are addition polymers or chain growth polymers?
Polymers formed by a straightforward linking together of monomer units, with no loss or gain of material, are called addition polymers or chain-growth polymers. A listing of some important addition polymers and their monomer precursors is presented in the following table.