The structures of the given copolymer are to be drawn. Concept introduction: Copolymer is defined as polymers whose repeating structural units are derived from two or more types of monomer units. Polyesters are polymers of an acid, benzene-1, 4-dicarboxylic acid ( terephthalic acid ) and an alcohol, ethane-1,2- diol . It is also known as polyethylene terephthalate ( PET ) . Polyesters are formed by condensation polymerization reactions in which the individual units are held by ester linkages between monomers, which involve the carboxyl and hydroxyl functional groups.
The structures of the given copolymer are to be drawn. Concept introduction: Copolymer is defined as polymers whose repeating structural units are derived from two or more types of monomer units. Polyesters are polymers of an acid, benzene-1, 4-dicarboxylic acid ( terephthalic acid ) and an alcohol, ethane-1,2- diol . It is also known as polyethylene terephthalate ( PET ) . Polyesters are formed by condensation polymerization reactions in which the individual units are held by ester linkages between monomers, which involve the carboxyl and hydroxyl functional groups.
Solution Summary: The author defines copolymer as polymers whose repeating structural units are derived from two or more types of monomer units.
Definition Definition Monomer units that are initially formed as a linear polymer, before polymer chains join to form a three-dimensional network structure. They are hard, rigid, and brittle. The molecular weight of a cross-linked polymer is very high. Examples of cross-linked polymers are Bakelite and urea-formaldehyde polymer.
Chapter 22, Problem 86E
(a)
Interpretation Introduction
Interpretation: The structures of the given copolymer are to be drawn.
Concept introduction: Copolymer is defined as polymers whose repeating structural units are derived from two or more types of monomer units. Polyesters are polymers of an acid, benzene-1, 4-dicarboxylic acid
(terephthalicacid) and an alcohol,
ethane-1,2-diol. It is also known as
polyethyleneterephthalate(PET). Polyesters are formed by condensation polymerization reactions in which the individual units are held by ester linkages between monomers, which involve the carboxyl and hydroxyl functional groups.
(b)
Interpretation Introduction
Interpretation: The structures of the given copolymer are to be drawn.
Concept introduction: Copolymer is defined as polymers whose repeating structural units are derived from two or more types of monomer units. Polyesters are polymers of an acid, benzene-1, 4-dicarboxylic acid
(terephthalicacid) and an alcohol,
ethane-1,2-diol. It is also known as
polyethyleneterephthalate(PET). Polyesters are formed by condensation polymerization reactions in which the individual units are held by ester linkages between monomers, which involve the carboxyl and hydroxyl functional groups.
Michael Reactions
19.52 Draw the products from the following Michael addition reactions.
1.
H&C CH
(a)
i
2. H₂O*
(b)
OEt
(c)
EtO
H₂NEt
(d)
ΕΙΟ
+
1. NaOEt
2. H₂O'
H
H
1. NaOEt
2. H₂O*
Rank the labeled protons (Ha-Hd) in order of increasing acidity, starting with the least acidic.
НОН НЬ
OHd
Онс
Can the target compound at right be efficiently synthesized in good yield from the unsubstituted benzene at left?
?
starting
material
target
If so, draw a synthesis below. If no synthesis using reagents ALEKS recognizes is possible, check the box under the drawing area.
Be sure you follow the standard ALEKS rules for submitting syntheses.
+ More...
Note for advanced students: you may assume that you are using a large excess of benzene as your starting material.
C
:0
T
Add/Remove step
G
Chapter 22 Solutions
Lab Manual for Zumdahl/Zumdahl/DeCoste¿s Chemistry, 10th Edition