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. We have seen that basic hydrolysis destroys the Dacron polymer. Poly(vinyl acetate) is converted to poly(vinyl alcohol) by a basic hydrolysis of the ester groups. Why doesn’t the hydrolysis destroy the poly(vinyl alcohol)polymer?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_forwardGive the structure of the monomer used to produce the polymer. - Nylon - Polystyrene - Polyester - Poly (Vinyl Acetate) - Poly (Vinylidene Chloride)arrow_forward
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- Draw 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_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
- Directions: Write A if only the first statement is correct; B if only the second statement is correct; C if both statements are correct and D if both statements are wrong. 1. X- Thermoplastic materials are made of long linear polymer chain that are weakly bonded. Y- Thermoplastic and thermosets are both recyclable. 2. X - A monomer is a small repeating units that makes up a polymer. Y - All polymers are considered as plastic. 3. X- All units in a polymer need to be from the same monomer. Y- Long chain polymers are flexible.arrow_forwardPoly(vinyl alcohol), a hydrophilic polymer used in aqueous adhesives, is made by polymerizing vinyl acetate and then hydrolyzing the ester linkages. Give the structures of poly(vinyl acetate) and poly(vinyl alcohol)arrow_forwardExplain why aqueous NaOH solution can be stored indefinitely in polyethylene bottles, but spilling aqueous base on a polyester shirt or nylon stockings quickly makes a hole.arrow_forward
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