ORGANIC CHEMISTRY 1 TERM ACCESS
ORGANIC CHEMISTRY 1 TERM ACCESS
3rd Edition
ISBN: 9781119661511
Author: Klein
Publisher: WILEY
Question
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Chapter 27, Problem 42PP

(a)

Interpretation Introduction

Interpretation:

Monomers required for the given polymer to be prepared need to be identified.

Concept introduction:

Polymers can be distinguished based on the functional group it has in the structure.  The monomer considered for forming the polymer determines the functional group in the polymer.  Few examples are,

  • Acid +alcohol=polyester
  • Acid+amine=polyamide
  • Alcohol+phosgene=polycarbonate
  • Alcohol+isocyanate=polycarbamate
  • Aldehyde= polyether

To draw : To draw the structure of monomers required for preparation of given polymer.

(b)

Interpretation Introduction

Concept introduction:

Polymers can be classified as chain-growth and step-growth polymers.  Chain-growth polymers are the one which are formed when monomer is added to the other monomer growing chain one at a time.  This growing polymer chain usually has only one reactive site.  This site is called growth point.  Step-growth polymers are the one when the monomers react with each other to form oligomers.  These oligomers are joined together to form polymers.  This usually occurs when difunctional monomers are used.  This has got two growth points.

(c)

Interpretation Introduction

Concept introduction:

Polymers can be classified as addition polymer and condensation polymer. Addition polymers are the one which are formed without the loss of any small molecules.  Usually compounds with vinylic bonds involve in addition polymerizationCondensation polymers are the one which are formed with the loss of small molecules such as water, ammonia etc.

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