Wei LI, Xi-chen GONG, Xiao-jie LIU, Li HAN, Hong-wei MA. Synthesis and Analysis of Hydrogenated Star Polymers of Styrene and Dienes[J]. Polymer Bulletin, 2018,31(11):44-51.
Wei LI, Xi-chen GONG, Xiao-jie LIU, Li HAN, Hong-wei MA. Synthesis and Analysis of Hydrogenated Star Polymers of Styrene and Dienes[J]. Polymer Bulletin, 2018,31(11):44-51. DOI: 10.14028/j.cnki.1003-3726.2018.11.005.
three star tri-polymers of styrene and dienes (S-IBS) were successfully synthesized with divinylbenzene (DVB) as coupling agent. Their average grafted number (AGN) was above 7.0 and the efficiency for coupling (CE) was about 93%. Then
the hydrogenated star polymers ( HS-IBS) were also successfully prepared. The efficiency for hydrogenation was above 95%
and the calculation for composition of copolymers was established. The copolymers of HS-IBS were regarded as tri-polymers of ethylene
propylene and styrene (E-P-St)
thus the
13
C and
1
H NMR method were used for characterization and calculation. The results between calculated compositions after hydrogenation
feed ratios and before hydrogenation showed the minimal error below 1%. This also described the calculation method exhibited good precision in the analysis of hydrogenated tri-polymers.
关键词
活性阴离子聚合星形氢化苯乙烯-二烯烃共聚物结构分析方法
Keywords
Living anionic polymerizationHydrogenated star polymers of styrene and dienesAnalysis of structure