Question

Synthetic polymer that resembles natural rubber is-
A.Chloroprene
B.Isoprene
C.Neoprene
D.Glyptal

Answer 1

Human-made polymers, which are frequently generated from petroleum oil, are known as synthetic polymers. They may be divided into three groups based on their utility: thermoplastics, elastomers, and synthetic fibres. They may be found in a wide range of items all around the world. A vast range of synthetic polymers with different main chains and side chains are available.

Complete answer:
Neoprene (also known as polychloroprene) is a kind of synthetic rubber made by polymerizing chloroprene. Neoprene is chemically stable and maintains flexibility throughout a wide temperature range. Laptop sleeves, orthopaedic braces (wrist, knee, etc.), electrical insulation, liquid and sheet-applied elastomeric membranes or flashings, and automobile fan belts are just a few of the applications for neoprene. Free-radical polymerization of chloroprene yields neoprene. Free radical emulsion polymerization is used to make this polymer in commercial manufacturing. Potassium persulfate is used to start the polymerization process. Individual polymer strands are crosslinked using bifunctional nucleophiles, metal oxides (e.g. zinc oxide), and thioureas.

Neoprene is more resistant to decomposition than natural or synthetic rubber. Because of its relative inertness, it's ideal for high-stress applications including gaskets, hoses, and corrosion-resistant coatings. It can be used as a basis for adhesives, to isolate noise in power transformer installations, and as padding in exterior metal containers to protect the contents while enabling a tight fit. Because it resists burning better than just hydrocarbon-based rubbers, it's used in fire door weather stripping and combat-related gear like gloves and face masks. Neoprene is used to line landfills because of its resistance to high temperatures.

Note:
Neoprene was recognised by several health professionals as an effective material to utilise for home-made face masks during the COVID-19 worldwide epidemic. Some Neoprene-based commercial face mask manufacturers claim 99.9% filtration for particles as tiny as 0.1 microns. Coronavirus has been shown to be 0.125 microns in size on average.