Interpretation:
To draw the structure of butyl rubber which is formed by the
Concept introduction:
Cationic polymerization is the type of polymerization in which the cationic initiator transfers the charge to the monomer unit which then becomes reactive to proceed for further reaction. This reactive monomer further reacts to the same or other monomer to give the final product as
Reactivity of monomer towards the cationic polymerization increases as the stability of the carbocation intermediate formed increases.
Some examples of initiator used are: HClO4, H2SO4, CFCOOH etc., in all these initiators H+ acts as an cationic initiator which starts the polymeric reaction. Here the butyl rubber formed is a
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Organic Chemistry
- Poly(vinyl alcohol), a hydrophilic polymer used in aqueous adhesives, is made by polymerizing vinyl acetate and then hydrolyzing the ester linkages. Why is poly(vinyl alcohol) made by this circuitous route? Why not just polymerize vinyl alcohol?arrow_forward(a) Draw the structure of the prepolymer A formed from 1,4-dihydroxybenzene and excess epichlorohydrin. (b) Draw the structure of the cross-linked polymer B formed when A is treated with H2NCH2CH2CH2NH2 as the hardening agent.arrow_forward2) One of the most common consumer plastics is PET (polyethylene terephthalate), which is used extensively in containers for food and beverage products. Coca-Cola has recently come up with a biobased source of ethylene glycol for synthesizing this polymer, however, the terephthalic acid is still derived from petroleum sources. A sustainable source of terephthalic acid is therefore highly desired. One candidate is 2,5-furandioic acid. Draw the repeat unit for the resulting sustainable polyester derived from 2,5furandioic acid and ethylene glycol.arrow_forward
- The polyester named Lactomer® is an alternating copolymer of lactic acid and glycolic acid. Lactomer is used for absorbable suture material because stitches of Lactomer hydrolyze slowly over a two-week period and do not have to be removed. The hydrolysis products, lactic acid and glycolic acid, are normal metabolites and do not provoke an inflammatory response. Draw the structure of the Lactomer polymer.arrow_forwardGive the structure of the monomer used to produce the polymer. - Nylon - Polystyrene - Polyester - Poly (Vinyl Acetate) - Poly (Vinylidene Chloride)arrow_forward#7: Draw/sketch representative structures for (a) homopolymers, (b) alternating copolymers, (c) block copolymers, and (d) graft copolymers composed of styrene (CAS# 100-42-5) and acrylonitrile (CAS# 107-13-1). (arrow_forward
- Poly(3-hydroxybutanoic acid), a biodegradable polyester, is an insoluble, opaque ma- terial that is difficult to process into shapes. In contrast, the copolymer of 3-hydroxy- butanoic acid and 3-hydroxyoctanoic acid is a transparent polymer that shows good solubility in a number of organic solvents. Explain the difference in properties between these two polymers in terms of their structure. Poly(3-hydroxybutanoic acid) Poly(3-hydroxybutanoic acid- 3-hydroxyoctanoic acid) copolymerarrow_forwardDraw the structure of the following polymers and indicate the polymerization type responsible for the givenpolymers.Indicate, where appropriate, the polyester, polyamide or polyurethane linkages.a) Poly(ethene terephthalate)b) Poly(vinyl alcohol)c) Polyisoprene and isomer structures of polyisoprened) Poly(methyl methacrylate)e) Polycaprolactamarrow_forwardExplain with more details, how you can prepare poly(ethylene oxide) by using Anionic and Cationic polymerisationarrow_forward
- a) Draw the structure of the prepolymer A formed from 1,4 dihydroxybenzene and excess epichlorohydrin. (b) Draw the structure of the cross-linked polymer B formed when A is treated with H2NCH2CH2CH2NH2 as the hardening agent.arrow_forward>Look at the structures of Vestenamer and Norsorex and show how they might be made by olefin metathesis polymerization.arrow_forward1) Draw the structure for the polymer (repeat unit only) produced from the monomer vinylidene dichloride (CH₂=CCl₂). 2) One of the most common consumer plastics is PET (polyethylene terephthalate), which is used extensively in containers for food and beverage products. Coca-Cola has recently come up with a biobased source of ethylene glycol for synthesizing this polymer, however, the terephthalic acid is still derived from petroleum sources. A sustainable source of terephthalic acid is therefore highly desired. One candidate is 2,5-furandioic acid. Draw the repeat unit for the resulting sustainable polyester derived from 2,5- furandioic acid and ethylene glycol.arrow_forward
- Organic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning