What is required for conversion of monomer to polymer?
Table of Contents
- 1 What is required for conversion of monomer to polymer?
- 2 Do all the monomers in a polymer have to be the same?
- 3 How do you calculate polymer yield?
- 4 Which polymer is prepared by step-growth polymerization?
- 5 How are macromolecule polymers assembled from monomers?
- 6 What are the monomers and polymers of each macromolecule?
- 7 How do monomeric compounds become polymers?
- 8 How many monomeric units are there in a dimer?
What is required for conversion of monomer to polymer?
Polymerization takes place either by condensation or addition reactions.
Do all the monomers in a polymer have to be the same?
Homopolymers are polymers made by joining together monomers of the same chemical composition or structure. Heteropolymers are polymers composed of more than one kind of monomer….Monomers and Polymers.
| Bio-Polymer | Type | Monomer(s) |
|---|---|---|
| Proteins | heteropolymer | amino acid units |
| Polynucleotides | heteropolymer | nucleotide units |
What happens when monomers become polymers?
Monomers are small molecules which may be joined together in a repeating fashion to form more complex molecules called polymers. Monomers form polymers by forming chemical bonds or binding supramolecularly through a process called polymerization.
What are the monomers for all addition polymers?
Addition polymerisation is a process involving many small, unsaturated monomers combining to form one large polymer molecule. The alkenes ethene and propene are two important feedstocks in the petrochemical industry which can also be used to make addition polymers.
How do you calculate polymer yield?
Note: In a polymer reaction, the percent yield equals the mass of polymer formed (actual yield) divided by the mass of the monomers used (mass of starting material) (multiplied by 100).
Which polymer is prepared by step-growth polymerization?
Many naturally occurring and some synthetic polymers are produced by step-growth polymerization, e.g. polyesters, polyamides, polyurethanes, etc. Due to the nature of the polymerization mechanism, a high extent of reaction is required to achieve high molecular weight.
Do polymers retain properties of the monomers?
The process of polymer formation through a chemical reaction is called polymerization. As a result, the polymer does not always retain all the same chemical properties of the original single monomer units. Polymerization reactions come in two types: chain-reaction and step-reaction.
Are all polymers macromolecules?
So all polymers are macromolecules, but not all macromolecules are polymers!
How are macromolecule polymers assembled from monomers?
Most macromolecules are made from single subunits, or building blocks, called monomers. The monomers combine with each other using covalent bonds to form larger molecules known as polymers. In doing so, monomers release water molecules as byproducts.
What are the monomers and polymers of each macromolecule?
Examples of biological monomers and polymers:
| Polymers | Monomers |
|---|---|
| Polysaccharides | Monosaccharides (simple sugars) |
| Polypeptides and proteins | Amino-acids |
| Nucleic acids | Nucleotides |
How do you know if a polymer is condensation or addition?
The main difference between addition and condensation polymerization is that in addition polymerization the polymers are formed by the addition of monomers with no by-products whereas in condensation polymerization, the polymers are formed due to the condensation more than one different monomers resulting in the …
How are condensation polymers formed?
Condensation polymers are formed by polycondensation, when the polymer is formed by condensation reactions between species of all degrees of polymerization, or by condensative chain polymerization, when the polymer is formed by sequential addition of monomers to an active site in a chain reaction.
How do monomeric compounds become polymers?
Monomers form polymers by forming chemical bonds or binding supramolecularly through a process called polymerization. Glucose the most abundant natural monomer, which polymerizes by forming glycosidic bonds.
How many monomeric units are there in a dimer?
The terms dimer, trimer, tetramer, pentamer, hexamer, heptamer, octamer, nonamer, decamer, dodecamer, eicosamer reflects molecules containing 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, and 20 monomer units.
What is an example of a small monomer?
Glucose, vinyl chloride, amino acids, and ethylene are examples of monomers. Each monomer may link in different ways to form a variety of polymers. In the case of glucose, for example, glycosidic bonds may link sugar monomers to form such polymers as glycogen, starch, and cellulose. Names for Small Monomers.
What is the difference between monomers and elastomers?
In polymers, monomers are bonded, by different molecular interactions. Nature of these interactions, yield polymers of varying elasticity, tensile strength, toughness, thermal stability, etc. Monomers forming a linear chain with weak bonding. These polymers exhibit elasticity and are called elastomers.