The mechanism for branching in free radical polymerisation of styrene is to be shown and the type of aliphatic hydrogen which is most likely to be abstracted is to be explained. Concept Introduction: Free radical polymerisation is the polymerisation in which polymer forms through free radical mechanism in which electrons are equally distributed between both atoms involved in bonding. Styrene polymerises via free radical polymerisation in the presence of benzoyl peroxide. To determine: The mechanism of the given reaction; also the type of hydrogen which is most likely to be abstracted in the given reaction.

Question

8. When an equilibrium step-growth polymerization is 99% complete, what fraction of the reaction mixture is still monomer (a) on mole basis and (b) on weight basis ?

Answer 1

Question

Definition Definition Monomer units that are not only combined in the linear chain but are also attached through branches of different lengths along the main chain. Branched-chain polymers have a lower density, lower melting point, and lower tensile strength compared to linear chain polymers because branched-chain does not pack well. Examples of branched-chain polymers are amylopectin and glycogen.

Chapter 26.2A, Problem 26.3P

Interpretation Introduction

Interpretation: The mechanism for branching in free radical polymerisation of styrene is to be shown and the type of aliphatic hydrogen which is most likely to be abstracted is to be explained.

Concept Introduction: Free radical polymerisation is the polymerisation in which polymer forms through free radical mechanism in which electrons are equally distributed between both atoms involved in bonding. Styrene polymerises via free radical polymerisation in the presence of benzoyl peroxide.

To determine: The mechanism of the given reaction; also the type of hydrogen which is most likely to be abstracted in the given reaction.

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8. When an equilibrium step-growth polymerization is 99% complete, what fraction of the reaction mixture is still monomer (a) on mole basis and (b) on weight basis ?

1.Discuss the suitable initiator to start an addition polymerization. 2.Define what is auto-acceleration, what causes this effect and how to minimize this effect. 3.Briefly discuss emulsion and suspension polymerization techniques.

Please show the product and mechanism for the cationic polymerization of 2-butene using BF3/H2O to catalyze polymerization. Do you expect this to be an effective polymerization strategy for this monomer? Why or why not?

Answer 2

Question

Definition Definition Monomer units that are not only combined in the linear chain but are also attached through branches of different lengths along the main chain. Branched-chain polymers have a lower density, lower melting point, and lower tensile strength compared to linear chain polymers because branched-chain does not pack well. Examples of branched-chain polymers are amylopectin and glycogen.

Chapter 26.2A, Problem 26.3P

Interpretation Introduction

Interpretation: The mechanism for branching in free radical polymerisation of styrene is to be shown and the type of aliphatic hydrogen which is most likely to be abstracted is to be explained.

Concept Introduction: Free radical polymerisation is the polymerisation in which polymer forms through free radical mechanism in which electrons are equally distributed between both atoms involved in bonding. Styrene polymerises via free radical polymerisation in the presence of benzoyl peroxide.

To determine: The mechanism of the given reaction; also the type of hydrogen which is most likely to be abstracted in the given reaction.

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Answer 3

Question

Definition Definition Monomer units that are not only combined in the linear chain but are also attached through branches of different lengths along the main chain. Branched-chain polymers have a lower density, lower melting point, and lower tensile strength compared to linear chain polymers because branched-chain does not pack well. Examples of branched-chain polymers are amylopectin and glycogen.

Chapter 26.2A, Problem 26.3P

Interpretation Introduction

Interpretation: The mechanism for branching in free radical polymerisation of styrene is to be shown and the type of aliphatic hydrogen which is most likely to be abstracted is to be explained.

Concept Introduction: Free radical polymerisation is the polymerisation in which polymer forms through free radical mechanism in which electrons are equally distributed between both atoms involved in bonding. Styrene polymerises via free radical polymerisation in the presence of benzoyl peroxide.

To determine: The mechanism of the given reaction; also the type of hydrogen which is most likely to be abstracted in the given reaction.

Expert Solution & Answer

Trending nowThis is a popular solution!

See solution

Check out sample textbook solution

Answer 4

Question

Definition Definition Monomer units that are not only combined in the linear chain but are also attached through branches of different lengths along the main chain. Branched-chain polymers have a lower density, lower melting point, and lower tensile strength compared to linear chain polymers because branched-chain does not pack well. Examples of branched-chain polymers are amylopectin and glycogen.

Chapter 26.2A, Problem 26.3P

Interpretation Introduction