Chapter 16, Problem 16.25P

Interpretation Introduction

(a)

Interpretation:

The relative tendencies of branched polyethylene versus linear polyethylene to crystallize are to be described.

Concept Introduction:

Crystallization of polymers is the process in which the molecular chains of the polymers tend to align themselves when temperature is reduced. Crystallization in polymers happens in segments and affects mechanical, optical and thermal properties of the polymer.

Interpretation Introduction

(b)

Interpretation:

The relative tendencies of polyethylene versus polyethylene-polypropylene copolymer to crystallize are to be described.

Concept Introduction:

Crystallization of polymers is the process in which the molecular chains of the polymers tend to align themselves when temperature is reduced. Crystallization in polymers happens in segments and affects mechanical, optical and thermal properties of the polymer.

Interpretation Introduction

(c)

Interpretation:

The relative tendencies of isotactic polypropylene versus atactic polypropylene to crystallize are to be described.

Concept Introduction:

Crystallization of polymers is the process in which the molecular chains of the polymers tend to align themselves when temperature is reduced. Crystallization in polymers happens in segments and affects mechanical, optical and thermal properties of the polymer.

Interpretation Introduction

(d)

Interpretation:

The relative tendencies of polymethyl methacrylate versus acetal (polyoxymethylene) to crystallize are to be described.

Concept Introduction:

Crystallization of polymers is the process in which the molecular chains of the polymers tend to align themselves when temperature is reduced. Crystallization in polymers happens in segments and affects mechanical, optical and thermal properties of the polymer.