1. 3 Nomenclature of copolymer poly(ethylene-CO-propylene) 乙烯-丙烯共聚物 poly(ethylene-y-propylene 乙烯-丙烯无规共聚物 poly(ethylene-b-propylene) 乙烯-丙烯嵌段共聚物 poly(ethylene-g-propylene) 乙烯-丙烯接枝共聚物 poly(ethylene-a-styrene) 乙烯-苯乙烯交替共聚物
poly(ethylene-co-propylene) 乙烯-丙烯共聚物 poly(ethylene-r-propylene) 乙烯-丙烯无规共聚物 poly(ethylene-b-propylene) 乙烯-丙烯嵌段共聚物 poly(ethylene-g-propylene) 乙烯-丙烯接枝共聚物 poly(ethylene-a-styrene) 乙烯-苯乙烯交替共聚物 1.3 Nomenclature of copolymer
Key topics in copolymerization ABABBAABAbBAAAbaBA Composition distribution Sequence distribution the relative amounts of each the way in which these monomer monomer unit incorporated into units are arranged within a the copolymer, A%or B% polymer chain; AA or AB
Key topics in copolymerization -ABABBAABABBAAABABAComposition distribution the relative amounts of each monomer unit incorporated into the copolymer, A% or B% Sequence distribution the way in which these monomer units are arranged within a polymer chain; AA or AB
2. Copolymer composition
8 2. Copolymer composition
Essential point The composition of a copolymer does not necessarily match the composition of the comonomers used in the reaction feed ratio投料比) Ethylene-vinyl acetate copolymer vinyl acetate % property 10~20 plastic 30~40 adhesive 50 rubber
9 Essential Point The composition of a copolymer does not necessarily match the composition of the comonomers used in the reaction ( feed ratio 投料比). Ethylene-vinyl acetate copolymer vinyl acetate % property 10 ~ 20 plastic 30 ~ 40 adhesive 50 rubber
Possible propagation sequences in free-radical copolymerization I-M MI I-M-M2+1 l-M2-M1+ N I一M I-M2-M2+
10 Possible propagation sequences in free-radical copolymerization