苯乙烯/异戊二烯渐变嵌段共聚物的负离子法合成和性能

廖明义,徐晓川

Anionic Synthesis and Dynamic Mechanical Poperties of Styrene/Isoprene Copolymers with Gradient Blocks

Mingyi LIAO,Xiaochuan XU

表1 S/I共聚物的1H-NMR谱图归属

Table 1 Assignment of the peaks in the 1H-NMR spectra of S/I copolymer

a b c d Chemical Shift (ppm) 7.40~7.10 6.50~6.75 5.20~4.81 4.81~4.40 Assignment -CH- of benzene ring in random S/I copylymer -CH- of benzene ring in block S/I copylymer =CH- of 1,4-units and =CH2 of 1,2-units =CH2 of 3,4-units and