Skip to main content

Polycarbonate (PC).

Polycarbonate (PC)

  • Polycarbonate are a group of thermoplastic polymers containing carbonate groups.
  • The main polycarbonate material is produced by the reaction of bisphenol-A (BPA) and phosgene.
    This image shows synthesis of polycarbonate from bisphenol-A and phosgene.
    Polycarbonate.
  • Polycarbonate is a durable material.
  • Polycarbonate is a tough, amorphous and transparent thermoplastic polymer.
  • Polycarbonate exhibits good heat resistance.
  • Polycarbonate exhibits good chemical resistance against diluted acids, aliphatic hydrocarbons and alcohols.
  • Polycarbonates and their blends are used in appliances, such as refrigerators, air conditioners, food mixers and washing machines etc.
  • Polycarbonate is used as a suitable alternative to glass.
  • It is often used in eyewear.
  • A major application of polycarbonate is the production of compact discs, DVDs etc.
  • It is also used to make safety helmets and bullet-proof glass.
    This image shows uses of polycarbonate in refrigerators,air conditioners, food mixers, washing machine, compact discs, DVDs, safety helmets,bullet proof glass.
    Uses of polycarbonate.

Questions on Polycarbonate;

Q1) What are polycarbonates?
Ans) Polycarbonates are a group of thermoplastic polymers containing carbonate groups.
Q2) How is Polycarbonate prepared?
Ans) The main polycarbonate material is produced by the reaction of bisphenol-A and phosgene.

Q3) Write some properties of polycarbonate?
Ans) Some properties of polycarbonate are given below;
1) Polycarbonate is a durable material.
2) Polycarbonate is a tough, amorphous and transparent thermoplastic polymer.
3) Polycarbonate exhibits good heat resistance.
4) Polycarbonate exhibits good chemical resistance against diluted acids, aliphatic hydrocarbons and alcohols.
Q4) Write some uses of polycarbonate?
Ans) Some uses of polycarbonate are given below;
1) Polycarbonate and their blends are used in appliances, such as refrigerators, air conditioners, food mixers and washing machines etc.
2) Polycarbonate is used as a suitable alternative to glass.
3) It is often used in eyewear.
4) A major application of polycarbonate is the production of compact discs,DVDs etc.
5) It is also used to make safety helmets and bullet-proof glass.

Comments

  1. UnknownSeptember 10, 2020 at 10:30 AM

    It's really helpfull...
    It's to easy to understand thanku so much

    ReplyDelete

Post a Comment

Popular posts from this blog

Difference between organic and inorganic polymers.

Difference between organic and inorganic polymers. Definition Organic polymers are the polymers that essentially contain carbon atom in the backbone. Inorganic polymers are the polymers that have no carbon atom in the backbone. Structure Most organic polymers have simple structures. Almost all inorganic polymers are highly branched and have complex structures. Electrical Conductivity In most of the aqueous solutions, organic polymers are typically poor conductors of electricity and heat. Inorganic polymers in aqueous solutions are good conductors of electricity, this is because they have high ability to ionise and this makes them better conductors. Flammability Organic polymers are flammable whereas inorganic polymers are nonflammable. Effect on nature Organic polymers are environmental friendly as these are biodegradable. Inorganic polymers are not environmental friendly as these are non biodegradable. Examples Organic polymers include polysaccharide...
Post a Comment
Read more

Monomers.

Monomers. A monomer is a molecule that can be reacted together with other monomer molecules to form a larger polymer chain. Some monomers are given below with their polymers . Tetrafluoroethene ; Tetrafluoroethene is the monomer of Teflon . Teflon and its monomer. Acrylonitrile (vinyl cyanide); Acrylonitrile is the monomer of Polyacrylonitrile . Polyacrylonitrile and its monomer. Isoprene; Isoprene is the monomer of Polyisoprene (natural rubber). Polyisoprene and its monomer. Chloroprene; Chloroprene is the monomer of Neoprene . Neoprene and its monomer. Vinyl chloride; Vinyl chloride is the monomer of Poly(vinyl chloride) . Polyvinyl chloride and its monomer. Vinyl acetate; Vinyl acetate is the monomer of Poly(vinyl acetate). Poly(vinyl acetate) and its monomer. Propylene; Propylene is the monomer of Polypropylene . Polypropylene and its monomer. Styrene; Styrene is the monomer of Polystyrene . Polystyrene and i...
Post a Comment
Read more

Determination of molecular weight of polymers by viscosity method.

Determination of molecular weight of polymers by viscosity method. It is a simple method for determining the molecular weight of polymers. Addition of polymers in the solvent increases the viscosity of the solvent, due to introduction of inhomogeneities by the polymers. If η₀ is the viscosity of the solvent and η is the viscosity of the solution at the same temperature, then the relative viscosity is given by Relative viscosity. Specific viscosity:  It is defined as the relative increase in viscosity and is given as Specific viscosity. Reduced viscosity: It is defined as the relative increase in viscosity per unit concentration (C) of polymer and is given as Reduced viscosity. Intrinsic viscosity: The reduced viscosity is dependent on concentration (C). If a graph is plotted between  reduced viscosity vs concentration then the extraplotation value when C=0 is called intrinsic viscosity. Intrinsic viscosity. Graph of reduced vi...
2 comments
Read more