Solutions Manual For Principles of Polymer Systems 6th
Edition By Ferdinand Rodriguez; Claude Cohen; Christopher K.
Ober; Lynden Archer 9781482223781 ALL Chapters .
Explain why polyamides are degraded by sodium hydroxide whereas polymers such as
poly(ethene) are not. - ANSWER: Polyamides can be hydrolysed whilst poly(alkenes) cannot. OH- the
nucleophile can attack peptide link. Poly(alkenes) are non polar
Polymerisation - ANSWER: The joining together of small molecules called monomers to form long
chains of polymers
Suggest three important substance manufactured on a large scale from propene. - ANSWER:
Propanal, propanol and polyproppne
Addition polymerisation - ANSWER: Joining together of monomers with C=C . Only one product
produces
Condensation polymerisation - ANSWER: 2 or more monomers react together and a molecule of
water or HCl is lost
Explain why dilute sodium hydroxide will cause holes to appear in clothing made from polymers such
as Terylene but a poly(phenylethene) container can be used to store sodium hydroxide. - ANSWER:
Only the polyester is hydrolysed in the alkaline conditions because polyester have polar bonds that
can be attacked by nucleophiles. The poly(alkene) has strong non-polar bonds that are not hydrolysed
by NaOH.
Give the molecular formula of the repeating unit in terylene, - ANSWER: -COC₆H₄COOCH₂CH₂O-
Give the IUPAC names for the monomers required to make Terylene - ANSWER: Benzene-1,4-
dicarboxylic acid and ethane-1,2-diol
Give the IUPAC names for the monomers required to make nylon 6,6 - ANSWER: 1,6 -aminohexane
and hexanedioic acid
Give the IUPAC names for the monomers required to make Kevlar - ANSWER: benzene-1,4-
dicarboxylic acid and 1,4-diaminobenzene
Monomers required to make nylon6,6, kevlar and terylene - ANSWER: Nylon6,6 needs 1,6
diaminohexane and hexanedioic acid.
Kevlar needs 1,4diaminobenzene and benzene 1,4, dicarboxylic acid.
Terylene needs ethane 1,2,diol and benzene 1,4, dicarboxylic acid.
Why is nylon-6,6 called nylon-6,6? - ANSWER: Nylon-6,6 is made from two monomers each of which
contain 6 carbon atoms - hence its name.
Give the molecular formula of the repeating unit in nylon,6,6 - ANSWER: -CO(CH₂)₄CONH(CH₂)₆NH-
Give the molecular formula of the repeating unit in Kevlar - ANSWER: -COC₆H₄CONHC₆H₄NH-
Although Terylene is biodegradeable, it is preferable to recycle objects made from Terylene. Give 3
advantages of recycling objects made from Terylene - ANSWER: reduces landfill, saves raw materials,
reduces CO2 emissions by not being incinerated
Edition By Ferdinand Rodriguez; Claude Cohen; Christopher K.
Ober; Lynden Archer 9781482223781 ALL Chapters .
Explain why polyamides are degraded by sodium hydroxide whereas polymers such as
poly(ethene) are not. - ANSWER: Polyamides can be hydrolysed whilst poly(alkenes) cannot. OH- the
nucleophile can attack peptide link. Poly(alkenes) are non polar
Polymerisation - ANSWER: The joining together of small molecules called monomers to form long
chains of polymers
Suggest three important substance manufactured on a large scale from propene. - ANSWER:
Propanal, propanol and polyproppne
Addition polymerisation - ANSWER: Joining together of monomers with C=C . Only one product
produces
Condensation polymerisation - ANSWER: 2 or more monomers react together and a molecule of
water or HCl is lost
Explain why dilute sodium hydroxide will cause holes to appear in clothing made from polymers such
as Terylene but a poly(phenylethene) container can be used to store sodium hydroxide. - ANSWER:
Only the polyester is hydrolysed in the alkaline conditions because polyester have polar bonds that
can be attacked by nucleophiles. The poly(alkene) has strong non-polar bonds that are not hydrolysed
by NaOH.
Give the molecular formula of the repeating unit in terylene, - ANSWER: -COC₆H₄COOCH₂CH₂O-
Give the IUPAC names for the monomers required to make Terylene - ANSWER: Benzene-1,4-
dicarboxylic acid and ethane-1,2-diol
Give the IUPAC names for the monomers required to make nylon 6,6 - ANSWER: 1,6 -aminohexane
and hexanedioic acid
Give the IUPAC names for the monomers required to make Kevlar - ANSWER: benzene-1,4-
dicarboxylic acid and 1,4-diaminobenzene
Monomers required to make nylon6,6, kevlar and terylene - ANSWER: Nylon6,6 needs 1,6
diaminohexane and hexanedioic acid.
Kevlar needs 1,4diaminobenzene and benzene 1,4, dicarboxylic acid.
Terylene needs ethane 1,2,diol and benzene 1,4, dicarboxylic acid.
Why is nylon-6,6 called nylon-6,6? - ANSWER: Nylon-6,6 is made from two monomers each of which
contain 6 carbon atoms - hence its name.
Give the molecular formula of the repeating unit in nylon,6,6 - ANSWER: -CO(CH₂)₄CONH(CH₂)₆NH-
Give the molecular formula of the repeating unit in Kevlar - ANSWER: -COC₆H₄CONHC₆H₄NH-
Although Terylene is biodegradeable, it is preferable to recycle objects made from Terylene. Give 3
advantages of recycling objects made from Terylene - ANSWER: reduces landfill, saves raw materials,
reduces CO2 emissions by not being incinerated
