Synthesis of Polystyrene-<italic style="font-style: italic">b</italic>-Polyisobutylene Block Copolymers and Their Application in Butyl Rubber Slurry Stabilizers

ZHANG Xing-long; ZHU Yu; LIU Yi-meng; XU Zi-lin; XU Bo-yu; LI Hui; LI Lu; LIU Qiang; YAN Shou-ke

doi:10.14028/j.cnki.1003-3726.2026.26.132

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Synthesis of Polystyrene-b-Polyisobutylene Block Copolymers and Their Application in Butyl Rubber Slurry Stabilizers

更新时间：2026-07-27

- Synthesis of Polystyrene-b-Polyisobutylene Block Copolymers and Their Application in Butyl Rubber Slurry Stabilizers
- Polymer Bulletin Vol. 39, Issue 8, Pages: 1504-1511(2026)
- 作者机构：
  
  青岛科技大学高分子科学与工程学院橡塑材料与工程教育部重点实验室　青岛 266042
  青岛科技大学化工学院　青岛 266042
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2026.26.132
  CLC：
- Received：09 March 2026，
  
  Accepted：10 April 2026，
  
  Online First：13 July 2026，
  
  Published：20 August 2026
- 稿件说明：
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张星龙, 朱昱, 刘祎梦, 徐子淋, 徐博瑜, 李会, 李露, 刘强, 闫寿科. 聚苯乙烯-b-聚异丁烯嵌段共聚物的合成及在丁基橡胶淤浆稳定剂的应用. 高分子通报, 2026, 39(8), 1504–1511.

Zhang, X. L.; Zhu, Y.; Liu, Y. M.; Xu, Z. L.; XU, B. Y.; Li, H.; Li, L.; Liu, Q.; Yan, S. K. Synthesis of polystyrene-b-polyisobutylene block copolymers and their application in butyl rubber slurry stabilizers. Polym. Bull. (in Chinese), 2026, 39(8), 1504–1511.
张星龙, 朱昱, 刘祎梦, 徐子淋, 徐博瑜, 李会, 李露, 刘强, 闫寿科. 聚苯乙烯-b-聚异丁烯嵌段共聚物的合成及在丁基橡胶淤浆稳定剂的应用. 高分子通报, 2026, 39(8), 1504–1511. DOI： 10.14028/j.cnki.1003-3726.2026.26.132.

Zhang, X. L.; Zhu, Y.; Liu, Y. M.; Xu, Z. L.; XU, B. Y.; Li, H.; Li, L.; Liu, Q.; Yan, S. K. Synthesis of polystyrene-b-polyisobutylene block copolymers and their application in butyl rubber slurry stabilizers. Polym. Bull. (in Chinese), 2026, 39(8), 1504–1511. DOI： 10.14028/j.cnki.1003-3726.2026.26.132.

摘要

以枯基氯(CumCl)/四氯化钛(TiCl

)/2

6-二叔丁基吡啶(DtBP)为引发体系，在−80 ℃的二氯

甲烷(CH

)中实现了苯乙烯(St)与异丁烯(IB)的顺序嵌段阳离子聚合，合成了聚苯乙烯-

-聚异丁烯两嵌段共聚物(PS-PIB)。通过调控CumCl和TiCl

的浓度，实现了St的快速引发和定量转化。核磁共振氢谱(

H-NMR)证实，当CumCl和TiCl

的浓度分别为8.7和45 mmol/L，聚合时间为3 min，聚苯乙烯(PS)的活性氯末端基相比于枯基首端基的比例约为86%；随后，加入IB单体进行嵌段聚合反应，产物经过丙酮和正己烷提纯PS和PIB均聚物后，得到了相对分子质量(

)为2.14×10

g/mol、分子量分布(

)为1.95的嵌段共聚物。使用丁酮(MEK)和PIB680模拟丁基橡胶淤浆，向其中加入1 wt%的PS-PIB嵌段共聚物，可以使浆液稳定分散；并且实验发现，嵌段产物不经丙酮和正己烷提纯，直接使用也同样可以实现稳定乳化。

Abstract

Using a cumyl chloride (CumCl)/titanium tetrachloride (TiCl

)/2

6-di-

tert

-butylpyridine (DtBP) initiating system

the sequential cationic block polymerization of styrene (St) and isobutylene (IB) was successfully conducted in dichloromethane (CH

) at −80 ℃

affording polystyrene-

-polyisobutylene (PS-

-PIB). Rapid initiation and nearly quantitative conversion of styrene (St) were achieved by adjusting the concentrations of CumCl and TiCl

in the system. Proton nuclear magnetic resonance (

H-NMR) spectroscopy revealed that when the concentrations of CumCl and TiCl

were 8.7 and 45 mmol/L

respectively

and the polymerization time was 3 min

the proportion of active chlorine end groups relative to cumyl initiating end groups in the resulting polystyrene (PS) reached approximately 86%. Upon the subsequent addition of the IB monomer

block copolymerization proceeded successfully. After purification with acetone and n-hexane to remove residual PS and PIB homopolymers

a PS-

-PIB diblock copolymer with a number-average molecular weight (

) of 2.14×10

g/mol and a molecular weight dispersity (

) of 1.95 was obtained. A simulated butyl rubber slurry was prepared using meth

yl ethyl ketone (MEK) and PIB680

and the addition of 1 wt% PS-

-PIB afforded a stable dispersion. Notably

the experimental results further demonstrated that the crude block copolymer product could be directly used without acetone and n-hexane purification

while still achieving stable emulsification.

关键词

Keywords

references

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Related Institution

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⁰

Synthesis of Polystyrene-b-Polyisobutylene Block Copolymers and Their Application in Butyl Rubber Slurry Stabilizers

DOI：10.14028/j.cnki.1003-3726.2026.26.132

摘要

Abstract

关键词

Keywords

references