What is the formula of polyamide?
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What is the formula of polyamide?
polyamide, any polymer (substance composed of long, multiple-unit molecules) in which the repeating units in the molecular chain are linked together by amide groups. Amide groups have the general chemical formula CO-NH.
What is the Iupac name of Nylon 66?
Poly(hexamethylene adipamide), or nylon 66, is derived from the condensation polymerization of hexamethylene diamine with adipic acid.
How is Nylon 66 prepared give equation?
Solution 2 Nylon -6,6 is synthesized by polycondensation of hexamethylenediamine and adipic acid. Equivalent amounts of hexamethylenediamine and adipic acid are combined with water in a reactor. This is crystallized to make nylon salt, an ammonium/carboxylate mixture.
What is the formula of nylon 66?
(C12H22N2O2)nNylon 66 / Formula
What is the meaning of 66 in nylon 66?
The numbers represent the amount and variant of the carbon atoms in the chemical structure from which they are formed. For example: Nylon 6 is created from caprolactam, which consists of 6 carbon atoms, while nylon 66 is produced from adipic acid, which has 6, and hexamethylene diamine, which also has 6.
Why is it called nylon 6 6?
Nylon 6 is made from one monomer which has 6 carbon atoms whilst Nylon 66 is made from 2 monomers with each one having 6 carbon atoms, hence the Nylon 66 name.
How nylon 6 is formed?
Nylon 6 is produced by the ring-opening polymerization of ∊-caprolactam. This can occur in the presence of clay, after ∊-caprolactam intercalates into a clay gallery so that the silicate layers are dispersed uniformly in the nylon 6 matrix.
What is the formula of Bakelite?
Bakelite
| Identifiers | |
|---|---|
| Chemical formula | (C6H6O·CH2O)n |
| Molar mass | Variable |
| Appearance | Brown solid |
| Density | 1.3 g/cm3 |
Why is nylon 66 called that?
What is the monomer of Bakelite?
Bakelite is a polymer made up of the monomers phenol and formaldehyde. This phenol-formaldehyde resin is a thermosetting polymer.
What type of plastic is Bakelite?
thermosetting polymer
Bakelite is one example of a thermosetting polymer. A thermosetting plastic is a polymer that irreversibly becomes rigid when heated. Such a material is also known as a thermoset or thermosetting polymer.
What color is Bakelite?
Bakelite in solid colors is the most recognizable type even without employing testing measures. The most readily found colors are yellow, ranging from butter yellow to dark butterscotch, followed by various shades of green. Red is one of the most popular colors of Bakelite jewelry with collectors.
How do you date Bakelite?
To use, dampen a cotton swab with 409 and rub it gently on the inside of the item being tested. If it is Bakelite, the swab will turn yellow. If a piece is lacquered, it may test negative with 409.
What is Bakelite made of?
A hard, infusible, and chemically resistant plastic, Bakelite was based on a chemical combination of phenol and formaldehyde (phenol-formaldehyde resin), two compounds that were derived from coal tar and wood alcohol (methanol), respectively, at that time.
Which type of polymer is Bakelite?
What is Bakelite? Bakelite is a polymer made up of the monomers phenol and formaldehyde. This phenol-formaldehyde resin is a thermosetting polymer.
How is Bakelite prepared?
It is prepared from the monomers such as phenol and formaldehyde. The condensation polymerisation take place in the presence of acid or base catalyst. (ii) Phenol reacts with methanal to form ortho or para hydroxyl methyl phenols which on further reaction with phenol gives linear polymer called novolac.
What is the composition of Bakelite?
