苯乙烯-异戊二烯/丁二烯-苯乙烯的合成、氢化及其热性能研究

李浩雨; 李旭文; 李嵬; 周轩哲; 丁志杰; 罗毅; 马红卫; 冷雪菲; 王艳色; 韩丽; 李杨

doi:10.11777/j.issn1000-3304.2025.25216

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苯乙烯-异戊二烯/丁二烯-苯乙烯的合成、氢化及其热性能研究

研究论文 | 更新时间：2026-01-16

- 苯乙烯-异戊二烯/丁二烯-苯乙烯的合成、氢化及其热性能研究
- Synthesis, Hydrogenation, and Thermal Properties of Styrene-Isoprene/Butadiene-Styrene
- 高分子学报 2026年57卷第1期页码：200-217
- 作者机构：
  
  1.大连理工大学化工学院高分子材料系精细化工国家重点实验室辽宁省高分子科学与工程重点实验室大连 116024
  2.沈阳化工研究院有限公司沈阳 110021
- 作者简介：
  
  E-mail: hanli@dlut.edu.cn
  liyang@dlut.edu.cn
- 基金信息：
  
  国家自然科学基金(基金号 52373052);中央高校基本科研业务费专项基金(基金号 DUT24MS011)
- DOI：10.11777/j.issn1000-3304.2025.25216
  中图分类号：
- CSTR：32057.14.GFZXB.2025.7474
- 收稿：2025-09-16，
  
  录用：2025-10-13，
  
  网络出版：2025-12-31，
  
  纸质出版：2026-01-20
- 稿件说明：
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李浩雨, 李旭文, 李嵬, 周轩哲, 丁志杰, 罗毅, 马红卫, 冷雪菲, 王艳色, 韩丽, 李杨. 苯乙烯-异戊二烯/丁二烯-苯乙烯的合成、氢化及其热性能研究. 高分子学报, 2026, 57(1), 200-217.

Li, H. Y., Li, X. W., Li, W., Zhou, X. Z., Ding, Z. J., Luo, Y, Ma, H. W., Leng, X. F., Wang, Y. S., Han, L., Li, Y. Synthesis, hydrogenation, and thermal properties of styrene-isoprene/butadiene-styrene. Acta Polymerica Sinica (in Chinese), 2026, 57(1), 200-217.
李浩雨, 李旭文, 李嵬, 周轩哲, 丁志杰, 罗毅, 马红卫, 冷雪菲, 王艳色, 韩丽, 李杨. 苯乙烯-异戊二烯/丁二烯-苯乙烯的合成、氢化及其热性能研究. 高分子学报, 2026, 57(1), 200-217. DOI： 10.11777/j.issn1000-3304.2025.25216. CSTR： 32057.14.GFZXB.2025.7474.

Li, H. Y., Li, X. W., Li, W., Zhou, X. Z., Ding, Z. J., Luo, Y, Ma, H. W., Leng, X. F., Wang, Y. S., Han, L., Li, Y. Synthesis, hydrogenation, and thermal properties of styrene-isoprene/butadiene-styrene. Acta Polymerica Sinica (in Chinese), 2026, 57(1), 200-217. DOI： 10.11777/j.issn1000-3304.2025.25216. CSTR： 32057.14.GFZXB.2025.7474.

摘要

苯乙烯-异戊二烯/丁二烯-苯乙烯嵌段共聚物(SI/BS)及其氢化产物SEEPS是高附加值热塑性弹性体(TPS)，但其结构与热性能的构效关系尚不明确. 本工作采用阴离子溶液聚合法，通过调控单体投料比与加料方式(逐步/一步)合成了一系列SI/BS，并进一步氢化得到不同加氢度(HD)的SEEPS. 研究发现，组成与数均分子量(

)对玻璃化转变温度(

)和分解温度(

)影响不显著，但

在一定程度上受Bd含量微调. 进一步考察了

、组成、HD及加料方式对SEEPS热性能(

、

)的影响. 发现当HD低于60%时，氢化可显著提升热性能；高于60%后，热性能变化不大. 当HD高于95%时，

与

对

和组成的变化不敏感，但结晶温度(

)和熔融温度(

)随Bd含量增加而明显升高，且逐步加料法制备的SEEPS具有更高的

和

. 结合

C-NMR及Bd/Ip共聚动力学分析推测，加料方式通过调控Bd与Ip的单体序列分布，进而影响了氢化后SEEPS的链段结构.

Abstract

Styrene-isoprene/butadiene-styrene block copolymer (SI/BS) and its hydrogenated product (SEEPS) are high-value-added thermoplastic elastomers (TPS). However

the structure-thermal property relationship remains unclear. In this study

a series of SI/BS were synthesized

via

anionic solution polymerization by adjusting monomer feed ratios and feeding methods (stepwise feeding versus one-step feeding)

which were further hydrogenated to obtain SEEPS with different hydrogenation degrees (HD). The results indicated that composition and number-average molecular weight (

) had no significant effect on the glass transition t

emperature (

) and decomposition temperature (

) of SI/BS

though

was slightly modulated by the Bd content. Further investigation into the effects of

composition

and feeding methods on the thermal properties (

) of SEEPS revealed that hydrogenation significantly enhanced thermal performance when HD was below 60%

while minimal changes could be observed above this threshold. At HD

95%

and

were insensitive to variations in

and composition. However

both crystallization temperature (

) and melting temperature (

) increased notably with higher Bd content. Moreover

SEEPS prepared

via

the stepwise feeding method exhibited higher

and

. Combining

C-NMR analysis and Bd/Ip copolymerization kinetics

it was inferred that the feeding method regulates the monomer sequence distribution of Bd and Ip

thereby influencing the segmental structure of hydrogenated SEEPS.

关键词

Keywords

references

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