Hence, Bakelite is a type of condensation polymer
What is Bakelite polymer?
Bakelite is a polymer made up of the monomers phenol and formaldehyde . This phenol-formaldehyde resin is a thermosetting polymer. ... Bakelite is the commercial name for the polymer obtained by the polymerization of phenol and formaldehyde.
Is Bakelite semi synthetic polymer?
Some examples are PVC, Teflon, nylon, Bakelite etc. -On the other hand semi-synthetic polymers are the polymers made by modification of the properties of the natural polymers. ... Therefore Cellulose nitrate, cellulose acetate and vulcanised rubber are examples of semi synthetic polymers.
Is Bakelite synthetic condensation polymer?
Several synthetic condensation polymers discussed include nylon, kevlar, polyester, Bakelite, Melamine, polycarbonates, polyurethanes, epoxies. Synthetic condensation polymers have a wide array of household, industrial, commercial, and medical uses and applications.
Is Bakelite a cross linked polymer?
Bakelite is a condensation polymer made from formaldehyde and phenol as shown below: Thus, the correct answer is option D i.e. Bakelite is a cross-linked polymer .
Why is Bakelite so expensive?
Rarity and desirability are some of the reasons Bakelite is so expensive. It’s also highly collectible . If you have a piece of Bakelite jewelry and are wondering how much it’s worth, it’s a good idea to compare it to recently sold items in a similar style.
Why was Bakelite discontinued?
Bakelite applications in conservation were discontinued in the 1940s because of certain disadvantages that soon became apparent . The lack of records and relevant information precludes any assumption on the extent of its use and in which institutions. Its discovery is attributed to the German chemist A.
Is PVC a thermosetting plastic?
Examples of thermoplastic types are PVC (Polyvinyl Chloride) and PE (Polyethylene). Examples of thermoset types include rubber insulations such as silicone rubbers and EVA (Ethylene-Vinyl Acetate). PE and PVC may also be cross-linked making them thermosetting types.
Is Bakelite thermosetting plastic?
Bakelite contains cross links, or heavily branched polymer chains. Bakelite polymer, upon heating is hardened and cannot be softened again. Hence, it is a thermosetting polymer .
What is the difference between Bakelite and plastic?
Bakelite is the first synthetic plastic and is known as a “material of thousand uses” due to its versatile applications. ... The key difference between Bakelite and plastic is, Bakelite is the first synthetically produced thermosetting plastic with heat resistant and non-conductivity of electricity.
Is Teflon a condensation polymer?
Addition polymers include polyethylene, polypropylene, Teflon, Lucite, and rubber. ... etc. Condensation polymers include nylon, Dacron, and Formica.
What property makes Bakelite so hard?
Statement 1: Bakelite is hard and has high melting point . Statement 2: Intermolecular forces of attraction in it are H-bonding.
Is PVC a condensation polymer?
Generally, the PVC is a condensation polymer that has a pressure of 100 atmospheres at 200OC. The polyethylene has condensation polymers which are formed by the combination of monomer with the elimination of simple molecules such as H20 or CH3OH.
Is PVC a cross-linked polymer?
Behal and Duchacek1 classified crosslinking of PVC as follows: (1) degradation crosslinking , (2) photo- chemical or radiation crosslinking, and (3) chemical crosslinking. ... There is also some research about the crosslinked PVC polymerization.
Is Bakelite a chain growth polymer?
Bakelite is an example of step growth polymer .
Is nylon 6/6 a cross-linked polymer?
Nylons 6, 66, and 11 can be radiation crosslinked , but the first two require addition of a crosslinking agent. For example, the polyfunctional monomer triallyl isocyanurate or triallyl-cyanurate can be compounded into nylon pellets. ... The crosslinking additive does not affect the thermoplastic processing stage.
