ORGANIC CHEMISTRY W/CONNECT & ALEKS
6th Edition
ISBN: 9781264683888
Author: SMITH
Publisher: MCG
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Chapter 28, Problem 57P
Compound A is a novel poly (ester amide)
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Compound A is a novel poly(ester amide) copolymer that can be used as a bioabsorbable coating for the controlled release of drugs. A is a copolymer of four monomers, two of which are amino acids or amino acid derivatives. The body’s enzymes recognize the naturally occurring amino acids in the polymer backbone, allowing for controlled enzymatic breakdown of the polymer and steady release of an encapsulated drug. Identify the four monomers used to synthesize A; then use Figure 29.2 to name the two amino acids.Figure 29.2: The 20 naturally occurring amino acids
Poly(lactic acid) (PLA) has received much recent attention because the lactic acid monomer [CH3CH(OH)COOH] from which it is made can be obtained from carbohydrates rather than petroleum. This makes PLA a more “environmentally friendly” polyester. (A more in-depth discussion of green polymer synthesis is presented in Chapter 30.) Draw the structure of PLA.
Novolac is the linear polymer which on heating with formaldehyde forms cross-linked bakelite.
Write the structures of monomers and the polymer novolac.
Chapter 28 Solutions
ORGANIC CHEMISTRY W/CONNECT & ALEKS
Ch. 28.1 - Prob. 1PCh. 28.2 - Prob. 2PCh. 28.2 - Prob. 3PCh. 28.2 - Draw the mechanism for the radical polymerization...Ch. 28.2 - Prob. 8PCh. 28.2 - Prob. 9PCh. 28.2 - Prob. 10PCh. 28.3 - Problem 30.12
What polymer is formed by anionic...Ch. 28.5 - Prob. 12PCh. 28.5 - Prob. 13P
Ch. 28.6 - Problem 30.15
What polyamide is formed from each...Ch. 28.6 - Prob. 19PCh. 28.7 - Prob. 20PCh. 28.8 - Prob. 21PCh. 28.9 - Prob. 22PCh. 28.9 - Prob. 23PCh. 28 - Prob. 24PCh. 28 - Prob. 25PCh. 28 - 30.30 Draw each polymer in Problem 30.29 using the...Ch. 28 - Prob. 44PCh. 28 - 30.49 Draw the products of each reaction.
a. e....Ch. 28 - Prob. 56PCh. 28 - 30.56 Compound A is a novel poly (ester amide)...Ch. 28 - 30.57 Researchers at Rutgers University have...Ch. 28 - 30.58 Melmac, a thermosetting polymer formed from...Ch. 28 - 30.59 Although chain branching in radical...Ch. 28 - Prob. 61P
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- 1) 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_forwardDuring our lectures on polymeric materials, I used polyethylene as an example because of its very straightforward structure. Draw a diagram of a long-chain molecule of polyethylene that consists of six units (or mers) of ethylene along with the starting and endpoint OH-. Include bonds in your diagram.arrow_forwardWhen the polytetrafluoroethylene polymer is exposed to high temperature for a long time,Write the root cause of the phenomenon of depolymerizationarrow_forward
- Briefly explain each of the polymers. Indicate whether the polymer is a natural polymer or synthetic polymer. - Nylon - Polystyrene - Polyester - Poly (Vinyl Acetate) - Poly (Vinylidene Chloride)arrow_forward3. Dacron is the brand name for the polymer that is made from ethane-1,2-diol and benzene-1,4-dicarboxylic acid. (a) What type of polymer is Dacron? (b) When the two monomers combine, what type of reaction do they undergo and what molecule is eliminated? (c) What is the name for the linkages that join the monomers together?(d) Draw the monomers and the polymer of the reaction to create Dacron. (Use a condensed structural formula in your answer.) HC-C styrene H-O-C- ethane-1,2-diol I H OH НО. 206 H -C-0-H H benzene-1.4-dicarboxylic acid.arrow_forwardDuring our lectures on polymeric materials, I used polyethylene as an example because of its very straightforward structure. (a.) Hydrogen peroxide (H2O2) is used as an initiator for the polymerization of ethylene. Draw a diagram of a dissociated hydrogen peroxide molecule which emphasizes the creation of two free radicals (unbonded electrons) that can serve as initiators or as terminators of polymerization.arrow_forward
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