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Definethefollowingterms.定义下列概念
CondensationpolymerizationandFreeradicalpolymerizationreaction
Monomer,Oligomer,therepeatingunit
Alternatingcopolymer,Blockcopolymer
BranchedPolymer,syndiotacticpolymer,atacticpolymer
Crosslinking,vulcanization
ChainTransfer,Initiation,Propagation,andTermination
ThermosetandThermoplastic
GlassTransitionTemperature
Plasticizers,Ziegler-Nattacatalysts
pressionmolding,Extrusion,InjectionandBlowmolding
Multiplechoices.单选
Tirecords,thefilmusedasbackingformagneticrecordingtapeinaudioandvideocassettes,andplasticsoft-drinkbottlesareallposedofwhatpolymers?D
poly(tetrafluoroethylene)
high-densitypolyethylene
nylon
poly(ethyleneterephthalate)
Whattermisusedtoindicateapolymerizationthatoccurswithoutthegrowthofachainmonomerbymonomer,butinsteadoccursasmonomersformdimers,dimersformtetramers,etc.?C
a.Non-chain
b.Discontinuous
c.step-growth
d.irregular-increment
Whodevelopedcatalyststhatcanproduce,exclusively,eitherisotacticorsyndiotacticpolymers?B
Carothers
ZieglerandNatta
Staudinger
Goodyear
Whogavethemacromolecularhypothesis?C
Carothers
ZieglerandNatta
Staudinger
Goodyear
Fabricsorfilmsmadeofwhichofthefollowingpolymersaremostsensitivetodamagefromsolutionsofstrongbases?A
a.Nylon
b.Polyethylene
c.poly(vinylchloride)
d.polystyrene
Whoproducedbilliardballsusingcollodianasasubstituteforivory?A
Hyatt
Stine
Goodyear
Staudinger
Inwhichpolymeris-(-CF2-CF2-)n-therepeatingunit?D
Acrilan
Orlon
Lucite
Teflon
TherepeatunitinapolymeriscalledtheA
a.monomer
b.oligomer
c.degreeofpolymerization
d.mer
Thesmallestrepeatingunitofapolymeris:B
a.Polymers
b.Monomers
c.Oligomers
d.dimer
InaIsotacticpolymer,A
thesidegroupsonapolymerchainareallgenerallyonthesamesideofthepolymerchain.
thesidegroupsofthepolymerchaingenerallyalternatetheirorientat
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