Skip to main content

Nylon

Nylon

  • Wallace Carothers was an American chemist, inventor and the leader of organic chemistry at DuPont, credited with the invention of nylon (nylon 6,6).
  • This fiber was first introduced in the 1930s as an early substitute for silk.
  • The nylons are polyamides with recurring amide groups. They contain carbon, oxygen, nitrogen and hydrogen elements.
    Amide
    Amide group.
  • Nylon is a synthetic fibre that is strong and very light in weight.
  • Nylon is also easy to wash.
  • Nylon fibre is highly resistant to heat, UV rays and chemicals.
  • Nylon is a lustrous fibre.
  • Nylon fabrics retain their shape and appearance after washing. It has good stability and does not shrink.
  • Nylon can be easily dyed with a wider range of dyes. The dyed fabrics retain their colour and have good resistance to fading.
  • Nylon is used to make ropes for different purposes, curtains, socks, toothbrush bristles, sleeping bags, tents, fishing nets, parachutes, sportswear, strings of badminton and tennis racquets and car seat belts.
    Uses of polyamides
    Uses of nylon.
  • Nylon riots were a series of disturbances at American stores created by a nylon stocking shortage. Next
    Nylon riots.

Comments

Post a Comment

Popular posts from this blog

Polypropylene (PP)

Polypropylene (PP). Polypropylene (PP) is also known as polypropene. Polypropylene is made from the polymerisation of propylene gas in the presence of Zeiglar Natta catalyst or metallocene catalyst. Polypropylene. Thus propene (or propylene) is the monomer of polypropylene. Polypropylene is a highly flammable material. It is sensitive to microbial attacks, such as bacteria and mold. It exhibits excellent resistance to diluted and concentrated acids, alcohols and bases. Polypropylene is used to make lunch boxes, margarine containers, yogurt pots, syrup bottles etc. Disposable syringes is the most common medical application of polypropylene. Polypropylene rope and twine are very strong and moisture resistant very suitable for marine applications. Polypropylene, highly colorfast, is widely used in manufacturing carpets, rugs and mats. Uses of Polypropylene. Questions on polypropylene; Q1) What is polypropylene? Ans) Polypropylene is a polymer of propylen...
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

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