To draw the structure of butyl rubber which is formed by the polymerization of isoprene and isobutylene in the presence of cationic initiator. 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 polymer . Reactivity of monomer towards the cationic polymerization increases as the stability of the carbocation intermediate formed increases. Some examples of initiator used are: HClO 4 , H 2 SO 4 , CFCOOH etc., in all these initiators H + acts as an cationic initiator which starts the polymeric reaction. Here the butyl rubber formed is a copolymer because it has two different monomer units.

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Answer 1

Question

Definition Definition Chemical process in which one or more monomers combine to produce a very large chain-like molecule called a polymer. The functional groups present on the monomers and their steric effects are responsible for polymerization through a sequence of reactions that vary in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes.

Chapter 31.3, Problem 6P

Interpretation Introduction

Interpretation:

To draw the structure of butyl rubber which is formed by the polymerization of isoprene and isobutylene in the presence of cationic initiator.

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 polymer.

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 copolymer because it has two different monomer units.

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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.

Polyisobutylene is one of the components of butyl rubber used for making inner tubes. Give the structure of polyisobutylene.

In reference to cloth or fiber, the term acetate usually means cellulose acetate, a semisynthetic polymer made by treating cellulose with acetic anhydride. Cellulose acetate is spun into yarn by dissolving it in acetone or methylene chloride and forcing the solution through spinnerets into warm air, where the solvent evaporates. An organic chemistry student wore a long-sleeved acetate blouse to the laboratory. She was rinsing a warm separatory funnel with acetone when the pressure rose and blew out the stopper. Her right arm was drenched with acetone, but she was unconcerned because acetone is not very toxic. About ten minutes later, the right arm of the student’s blouse disintegrated into a pile of white fluff, leaving her with a ragged short sleeve and the tatters of a cuff remaining around her wrist. Explain how a substance as innocuous as acetone ruined the student’s blouse.

Answer 2

Question

Definition Definition Chemical process in which one or more monomers combine to produce a very large chain-like molecule called a polymer. The functional groups present on the monomers and their steric effects are responsible for polymerization through a sequence of reactions that vary in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes.

Chapter 31.3, Problem 6P

Interpretation Introduction

Interpretation:

To draw the structure of butyl rubber which is formed by the polymerization of isoprene and isobutylene in the presence of cationic initiator.

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 polymer.

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 copolymer because it has two different monomer units.

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Answer 3

Question

Definition Definition Chemical process in which one or more monomers combine to produce a very large chain-like molecule called a polymer. The functional groups present on the monomers and their steric effects are responsible for polymerization through a sequence of reactions that vary in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes.

Chapter 31.3, Problem 6P

Interpretation Introduction

Interpretation:

To draw the structure of butyl rubber which is formed by the polymerization of isoprene and isobutylene in the presence of cationic initiator.

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 polymer.

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 copolymer because it has two different monomer units.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 4

Question

Definition Definition Chemical process in which one or more monomers combine to produce a very large chain-like molecule called a polymer. The functional groups present on the monomers and their steric effects are responsible for polymerization through a sequence of reactions that vary in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes.

Chapter 31.3, Problem 6P

Interpretation Introduction