What is melt polycondensation?
What is melt polycondensation?
Melt polycondensation is an important synthetic methodology that is largely used for the manufacture of thermoplastic engineering polymers such as polyesters, polyamides, and polycarbonates.
What is meant by suspension polymerization?
Suspension polymerization is a process in which monomer(s), relatively insoluble in water, is (are) dispersed as liquid droplets with steric stabilizer and vigorous stirring to produce polymer particles as a dispersed solid phase.
What is monomer solution?
Monomer is defined as a simple molecule with two or more binding sites through which it forms covalent linkages with other monomer molecules to form the macromolecule. Monomers are thus building blocks of polymers.
What is polycondensation used for?
Polycondensation or step-growth polymerization is often used for the processing of adhesives, coatings, engineered plastics, fibers, films and many high-performance polymers.
What is polycondensation process?
Polycondensation reaction Polycondensation is the process of forming polymers by the combination of different monomers. The process is frequently accompanied by the release of various subsidiary low-molecular products (water, alcohol, salt).
What is the advantage of suspension polymerization?
The main advantages of suspension polymerization over emulsion systems are that no surfactants, which are difficult to remove from the product, are used, and no ionic end groups are present, which may be unstable during processing at high temperatures.
What is the difference between emulsion and suspension polymerization?
The two differences between emulsion and suspension polymerization are: 1) that a suspension polymerization is a mechanical process, and must have a stabilizing agent until the droplets are far apart, and 2) the emulsion polymerization is a chemical process which requires a surfactant to make the monomer “emulsify.”
What is monomer made of?
All monomers have the capacity to form chemical bonds to at least two other monomer molecules. Polymers are a class of synthetic substances composed of multiples of simpler units called monomers….Monomers and Polymers.
| Bio-Polymer | Type | Monomer(s) |
|---|---|---|
| Proteins | heteropolymer | amino acid units |
| Polynucleotides | heteropolymer | nucleotide units |
How do you identify A monomer?
Monomers are the individual units that make up a polymer. We can determine what the monomer is by first finding the smallest repeating structure. We then need to determine if all the carbon atoms in that repeating structure have an octet.
What is a polycondensation reaction?
In polycondensation, the reaction proceeds between monomers containing two or more reactive functional groups (e.g., hydroxyl, carboxyl and amino) condensing with each other.
