Acrylic nails are made by combining polymer particulates with a monomeric solution that reacts in a chain-growth polymerization reaction. When initiated, the monomers link together in a network that surrounds the polymer particles. The ratio of monomer to existing polymer particles will affect the properties of the final material. The poly- mer particulate component of acrylic nails is poly(methyl methacrylate). One of sev- eral different chemicals is used in the current nail industry as the monomer solution: isobutyl methacrylate, hydroxyethyl methacrylate, or ethyl methacrylate. (a) Draw the polymer chain that results for each of these monomers. (b) Azoisobutyronitrile (AIBN) is added into the reaction and is activated by ap- plied heat. Draw a mechanism for the reaction of hydroxyethyl methacrylate using AIBN. Show the steps of initiation, two propagation steps, and a ter- mination step where two radical polymeric chains combine. What role does AIRN serve?

Acrylic nails are made by combining polymer particulates with a monomeric solution that reacts in a chain-growth polymerization reaction. When initiated, the monomers link together in a network that surrounds the polymer particles. The ratio of monomer to existing polymer particles will affect the properties of the final material. The poly- mer particulate component of acrylic nails is poly(methyl methacrylate). One of sev- eral different chemicals is used in the current nail industry as the monomer solution: isobutyl methacrylate, hydroxyethyl methacrylate, or ethyl methacrylate. (a) Draw the polymer chain that results for each of these monomers. (b) Azoisobutyronitrile (AIBN) is added into the reaction and is activated by ap- plied heat. Draw a mechanism for the reaction of hydroxyethyl methacrylate using AIBN. Show the steps of initiation, two propagation steps, and a ter- mination step where two radical polymeric chains combine. What role does AIRN serve?

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter29: Organic Polymer Chemistry

Section: Chapter Questions

Problem 29.19P

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Nylon 6 is a polyamide used in the manufacture of ropes. It can be prepared via hydrolysis of e-caprolactam to form e-aminocaproic acid followed by acid-catalyzed polymerization. & e-caprafactare 27.16a Hyd aminocaproic acid Identify the structure of Nylon 6. Nylon
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?
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) Polycaprolactam
Researchers at Rutgers University have developed biocompatible polymers that degrade into nonsteroidal anti-inflammatory drugs. For example, the reaction of two equivalents of benzyl salicylate and one equivalent of sebacoyl chloride forms a poly(anhydride ester) called PolyAspirin, which hydrolyzes to salicylic acid (an anti-inflammatory agent) and sebacic acid, which is excreted. This technology can perhaps be used for localized drug delivery at specific sites of injury. What is the structure of PolyAspirin?
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Q.2 Write the significance of poly dispersity index; also calculate the number-average molecular weight, weight-average molecular weight and degree of polymerization for the polypropylene by using given data. Molecular Weight Range (g/mol) Xị Wi 8,000-18,000 18,000-26,000 26,000-34,000 0.05 0.02 0.16 0.10 0.24 0.20 34,000-42,000 42,000-50,000 0.28 0.30 0.20 0.27 50,000-58,000 0.07 0.11
The number average molecular weight of polymer A reaches 16000 g/mol at the percent conversion of 92 %. What would be the stoichiometric imbalance factor in this polymerization? Given that the molecular weight of the repeating unit of this polymer A is 113 g/mol
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
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Classify the molecules in Problems 26.43 and 26.48 as either carbon-chain or heterochain polymers. Identify the repeating unit in each polymer and draw the condensed formula
The plastic known as PETE (polyethyleneterephthalate) is used to make plastic soft drink bottles and containers for salad dressing, shampoos, and dishwashing liquids. PETE is a polymer of terephthalic acid and ethylene glycol. Today, PETE is the most widely recycled of all the plastics. After it is separated from other plastics, PETE can be used in polyester fabric, door mats, and tennis ball containers. In 2015, 1.84×109 lb1.84×109 lb of PETE bottles were recycled in the U.S. The density of PETE is 1.38 g/mLg/mL. How many kilograms of PETE bottles were recycled in 2015 in the U.S.? Express your answer to three significant figures.
The plastic known as PETE (polyethyleneterephthalate) is used to make plastic soft drink bottles and containers for salad dressing, shampoos, and dishwashing liquids. PETE is a polymer of terephthalic acid and ethylene glycol. Today, PETE is the most widely recycled of all the plastics. After it is separated from other plastics, PETE can be used in polyester fabric, door mats, and tennis ball containers. In 2015, 1.84×109 lb1.84×109 lb of PETE bottles were recycled in the U.S. The density of PETE is 1.38 g/mLg/mL. What volume, in liters, of PETE bottles were recycled in 2015 in the U.S.? Express your answer to three significant figures.

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