Answered: Polymer Poly- Polyethene Poly(vinyl…

Polymer Poly- Polyethene Poly(vinyl chloride) Polystyrene (oxymethylene) Structure -OCH,),- -(CH, CH,),- (CH, CHCI),- -(CH,CH (CH,),– T/K 198 253 354 381

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter10: Fuels, Organic Chemicals, And Polymers

Section: Chapter Questions

Problem 70QRT

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Question

The following table lists the glass transition temperatures, T_g, of several polymers. Discuss the reasons why the structure of the monomer unit has an effect on the value of T_g.

Polymer Poly-
Polyethene Poly(vinyl
chloride)
Polystyrene
(oxymethylene)
Structure -OCH,),-
-(CH,
CH,),-
(CH,
CHCI),-
-(CH,CH
(CH,),–
T/K
198
253
354
381

Definition Definition Large and very high-molecular-weight substances that consist of hundreds to thousands of repeating units. Polymers are also known as macromolecules. Number-average-molecular weight is the measuring system for the polymers.

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