6.21 reactions of alkenes with alkenes: polymerization
DESCRIPTION
6.21 Reactions of Alkenes with Alkenes: Polymerization. Polymerization of Alkenes. cationic polymerization free-radical polymerization coordination polymerization. (CH 3 ) 2 C. CH 2. CH 3. CH 3. CH 3 CCH. CH 3 CCH 2 C. C(CH 3 ) 2. CH 2. CH 3. CH 3. CH 3. Cationic Polymerization. - PowerPoint PPT PresentationTRANSCRIPT
6.216.21
Reactions of Alkenes with Alkenes:Reactions of Alkenes with Alkenes:
PolymerizationPolymerization
cationic polymerizationcationic polymerization
free-radical polymerizationfree-radical polymerization
coordination polymerizationcoordination polymerization
Polymerization of AlkenesPolymerization of Alkenes
HH22SOSO44
++
monomermonomer(C(C44HH88))
two dimerstwo dimers(C(C88HH1616))
Dimerization of 2-methylpropeneDimerization of 2-methylpropene
(CH(CH33))22CC CHCH22
CHCH33CCHCCH
CHCH33
CHCH33
C(CHC(CH33))22 CHCH33CCHCCH22CC
CHCH33
CHCH33
CHCH22
CHCH33
Cationic PolymerizationCationic Polymerization
CHCH33CCHCCH22CC
CHCH33
CHCH33
CHCH33
CHCH33
++
++
CHCH33
HH22CC CC
CHCH33
CHCH33CC
CHCH33
++
CHCH33
Mechanism of DimerizationMechanism of Dimerization
++CHCH33CCHCCH
CHCH33
CHCH33
C(CHC(CH33))22 CHCH33CCHCCH22CC
CHCH33
CHCH33
CHCH22
CHCH33
CHCH33CCHCCH22CC
CHCH33
CHCH33
CHCH33
CHCH33
++
Mechanism of DimerizationMechanism of Dimerization
200 °C200 °C2000 atm2000 atm
OO22
peroxidesperoxides
polyethylenepolyethylene
HH22CC CHCH22
CHCH22 CHCH22 CHCH22 CHCH22 CHCH22 CHCH22 CHCH22
Free-Radical Polymerization of EthyleneFree-Radical Polymerization of Ethylene
••....
RORO....
HH22CC CHCH22
MechanismMechanism
HH22CC CHCH22••
....RORO::
MechanismMechanism
HH22CC CHCH22••
....RORO::
MechanismMechanism
CHCH22HH22CC
HH22CC CHCH22
HH22CC CHCH22••
....RORO::
MechanismMechanism
HH22CC CHCH22
HH22CC CHCH22••
....RORO::
MechanismMechanism
CHCH22HH22CC
HH22CC CHCH22
HH22CC CHCH22
•• HH22CC CHCH22
....RORO::
MechanismMechanism
HH22CC CHCH22
HH22CC CHCH22
•• HH22CC CHCH22
....RORO::
MechanismMechanism
CHCH22HH22CC
polypropylenepolypropylene
HH22CC CHCHCHCH33
CHCH CHCH CHCHCHCHCHCHCHCH CHCH
CHCH33 CHCH33 CHCH33 CHCH33 CHCH33 CHCH33 CHCH33
Free-Radical Polymerization of PropeneFree-Radical Polymerization of Propene
••....
RORO....
HH22CC CHCHCHCH33
MechanismMechanism
HH22CC CHCHCHCH33••
....RORO::
MechanismMechanism
HH22CC CHCHCHCH33••
....RORO::
MechanismMechanism
CHCHCHCH33HH22CC
HH22CC CHCHCHCH33
HH22CC CHCHCHCH33••
....RORO::
MechanismMechanism
HH22CC CHCHCHCH33
HH22CC CHCHCHCH33••
....RORO::
MechanismMechanism
CHCHCHCH33HH22CC
HH22CC CHCHCHCH33
HH22CC CHCHCHCH33
•• HH22CC CHCHCHCH33
....RORO::
MechanismMechanism
HH22CC CHCHCHCH33
HH22CC CHCHCHCH33
•• HH22CC CHCHCHCH33
....RORO::
MechanismMechanism
CHCHCHCH33HH22CC
HH22C=CHCl C=CHCl polyvinyl chloridepolyvinyl chlorideHH22C=CHCC=CHC66HH5 5 polystyrenepolystyreneFF22C=CFC=CF22 TeflonTeflon
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