Polymers

Polymerisation; Polymerization is a process of reacting monomer molecules together in a chemical reaction to form polymers. For example; Nylon 6,6 is obtained by polymerisation of hexamethylene diamine and adipic acid . Polytetrafluoroethylene/Teflon is obtained by polymerisation of tetrafluoroethylene . Polyacrylonitrile is obtained by polymerisation of acrylonitrile . Glyptal is produced by polymerisation of ethylene glycol and phthalic acid . Polyisoprene is produced by polymerisation of isoprene . Polychloroprene/Neoprene is produced by polymerisation of chloroprene . Buna S is produced by polymerisation of butadiene and styrene . Buna N is produced by polymerisation of butadiene and acrylonitrile. Polyvinyl chloride is produced by polymerisation of vinyl chloride . Polyvinyl acetate is produced by polymerisation of vinyl acetate . Polystyrene is produced by polymerisation of styrene. Polypropylene is made from the polymerisation ...

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...

Polylactic acid/PLA. Polylactic acid is a biodegradable thermoplastic polymer . Polylactic acid is obtained from lactic acid monomer. Polylactic acid. Polylactic acid is stable to UV radiation. Polylactic acid has good resistance to moisture. Polylactic acid has good elasticity. Polylactic acid is an aliphatic polyester . It can be used as a food packaging polymer. Polylactic acid is suitable for textile fibre applications such as shirts, carpets, sportswear etc. Polylactic acid is used in implants and medical devices (screws, sutures etc). Polylactic acid is suitable for use in floor mats. Uses of Polylactic acid. Questions on Polylactic acid/PLA; Q1) What is Polylactic acid? Ans) Polylactic acid is a biodegradable thermoplastic polymer. Q2) What is the monomer of Polylactic acid? Ans) Polylactic acid is obtained from lactic acid monomer. Q3) Write some properties of Polylactic acid? Ans) Some properties of Polylactic acid are given below; ...

Polyglycolic acid (PGA). Polyglycolic acid is obtained from glycolic acid monomer. Polyglycolic acid. Polyglycolic acid is a biodegradable polymer . It is a thermoplastic . Polyglycolic acid is the simplest aliphatic polyester. Polyglycolic acid can degrade within weeks, depending on its molecular weight. Polyglycolic acid has been commercially available as synthetic and absorbable sutures since 1970. Application of PGA in the medical field include drug delivery systems and disposable medical devices . PGA can be used in wastewater treatment . PGA can be used in food packaging. Uses of Polyglycolic acid. Questions on Polyglycolic acid; Q1) What is Polyglycolic acid? Ans) Polyglycolic acid is a biodegradable polymer. It is a thermoplastic. Q2) How is Polyglycolic acid obtained? Ans) Polyglycolic acid is obtained from glycolic acid monomer. Q3) Write some properties of Polyglycolic acid? Ans) Some uses of Polyglycolic acid are given below; 1) P...

Nylon-2-Nylon-6; Nylon-2-Nylon-6 is a copolymer. It is a polyamide . Condensation polymerisation of glycine and aminocaproic acid gives Nylon-2-Nylon-6. Nylon-2-Nylon-6. It is a biodegradable polymer . It is a synthetic polymer. It is used for making ropes and parachutes. It is used in making seat belts and clothes. It is used to make toothbrush bristles. Nylon-2-Nylon-6 is used in making orthopaedic devices, implants and sutures. Uses of Nylon-2-Nylon-6. Questions on Nylon-2-Nylon-6; Q1) What is Nylon-2-Nylon-6? Ans) Nylon-2-Nylon-6 is a copolymer. It is a polyamide. It is a synthetic biodegradable polymer . Q2) What are the monomers of Nylon-2-Nylon-6? Ans) Glycine and aminocaproic acid are the monomers of Nylon-2-Nylon-6. Q3) How is Nylon-2-Nylon-6 prepared? Ans) Condensation polymerisation of glycine and aminocaproic acid gives Nylon-2-Nylon-6. Q4) Write some uses of Nylon-2-Nylon-6? Ans) Some uses of Nylon-2-Nylon-6 are given below...

Poly(β-hydroxybutyrate-co-β-hydroxyvalerate)/ PHBV PHBV is a biodegradable, non-toxic, biocompatible plastic. It is obtained by the copolymerisation of 3-hydroxybutanoic acid and 3-hydroxypentanoic acid . PHBV. PHBV is a thermoplastic polymer. PHBV is brittle. PHBV is an aliphatic polyester . PHBV is used in medical implants. PHBV is used to make orthopaedic devices. PHBV is used in manufacturing bottles. PHBV is biodegradable , so it can be used as an alternative to non biodegradable plastics. PHBV is used in speciality packaging . Uses of PHBV. Questions on PHBV; Q1) What is PHBV? Ans) PHBV is a biodegradable,non toxic, biocompatible plastic. It is a thermoplastic polymer. Q2) How is PHBV prepared? Ans) PHBV is obtained by the copolymerisation of 3-hydroxybutanoic acid and 3-hydoxypentanoic acid. Q3) Write some properties of PHBV? Ans) Some properties of PHBV are given below; 1) It is biodegradable plastic. 2) It is non toxic. 3) It...

Biodegradable Polymers; Biodegradable polymers are the polymers which are degraded by micro-organisms within a suitable period. Thus biodegradable polymers and their degraded products do not cause any serious affects on the environment. Some examples of biodegradable polymers are Poly(β-hydroxybutyrate-co-β-hydroxyvalerate)/PHBV, Polyglycolic acid (PGA), Nylon-2-Nylon-6. Biodegradable polymers are the "materials of today". These polymers are now an obvious choice for biomedical applications. Moreover, biodegradable polymers are now trending to become materials of choice in household applications, as they are environmentally friendly. Biodegradable polymers can be classified as synthetic and natural polymers. Biodegradation occurs through cleaving hydrolytically or enzymatically sensitive bonds, leading to loss of polymeric materials. Most of the natural polymers undergo enzymatic degradation. Application of biodegradable polymers include implantable large devic...

Ethylene Propylene rubber. Ethylene-Propylene copolymer, also called Ethylene-Propylene rubber is a synthetic rubber produced by copolymerizing ethylene and propylene , usually in combination with other chemical compounds. Ethylene Propylene rubber. It is a type of synthetic elastomer . There are two types of ethylene-propylene rubber, EPM and EPDM. The designation EPM applies to the simple copolymer of ethylene and propylene ["E" for ethylene, "P" for propylene, and "M" for the polymethylene(-(CH₂)ₓ-) type backbone]. In the case of EPDM, the "D" designates a third comonomer, a diene, Which introduces unsaturation into the molecule. Ethylene-Propylene is resistant to heat and weather. Ethylene-Propylene is resistant to oxidation and ozone. Ethylene-Propylene is also not susceptible to color loss. As non-polar elastomers, they have good electrical resistivity, as well as resistance to polar solvents such as water, acids and alkal...