Chapter 29: Problem 12
Poly(ethylene terephthalate) (PET) can be prepared by this reaction. Propose a mechanism for the step-growth reaction in this polymerization.
Chapter 29: Problem 12
Poly(ethylene terephthalate) (PET) can be prepared by this reaction. Propose a mechanism for the step-growth reaction in this polymerization.
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Get started for freeDraw a structural formula of the polymer resulting from base-catalyzed polymerization of each compound. Would you expect the polymers to be optically active? \((S)-(+)\)-lactide is the dilactone formed from two molecules of \((S)\) - \((+)\)-lactic acid.
Polymerization of vinyl acetate gives poly(vinyl acetate). Hydrolysis of this polymer in aqueous sodium hydroxide gives the useful water-soluble polymer poly(vinyl alcohol). Draw the repeat units of both poly(vinyl acetate) and poly(vinyl alcohol).
We saw how intramolecular chain transfer in radical polymerization of ethylene creates a four-carbon branch on a polyethylene chain. What branch is created by a comparable intramolecular chain transfer during radical polymerization of styrene?
Following is the structural formula of a section of polypropylene derived from three units of propylene monomer. Draw structural formulas for comparable sections of the following. (a) Poly(vinyl chloride) (b) Polytetrafluoroethylene (c) Poly (methyl methacrylate) (d) Poly (1,1-dichloroethylene)
When equal molar amounts of phthalic anhydride and 1,2,3-propanetriol are heated, they form an amorphous polyester. Under these conditions, polymerization is regioselective for the primary hydroxyl groups of the triol.
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