Grafting Polyisoprene onto Surfaces of Nano-Silica via RAFT Polymerization and Modification of SBS

Yi-xin XIANG; Xian-rong SHEN; Jian-gang GAO; Qing-ping SONG

doi:10.14028/j.cnki.1003-3726.2019.03.005

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Grafting Polyisoprene onto Surfaces of Nano-Silica via RAFT Polymerization and Modification of SBS

更新时间：2022-09-02

- Grafting Polyisoprene onto Surfaces of Nano-Silica via RAFT Polymerization and Modification of SBS
- Polymer Bulletin Vol. 32, Issue 3, Pages: 43-50(2019)
- 作者机构：
  
  安徽工程大学　生物与化学工程学院，芜湖 241000
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2019.03.005
  CLC：
- Published：20 March 2019，
  
  Received：25 June 2018，
  
  Revised：20 December 2018，
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Yi-xin XIANG, Xian-rong SHEN, Jian-gang GAO, Qing-ping SONG. Grafting Polyisoprene onto Surfaces of Nano-Silica via RAFT Polymerization and Modification of SBS. [J]. Polymer Bulletin 32(3):43-50(2019)
DOI：

Yi-xin XIANG, Xian-rong SHEN, Jian-gang GAO, Qing-ping SONG. Grafting Polyisoprene onto Surfaces of Nano-Silica via RAFT Polymerization and Modification of SBS. [J]. Polymer Bulletin 32(3):43-50(2019) DOI： 10.14028/j.cnki.1003-3726.2019.03.005.

摘要

制备了表面接枝有聚异戊二烯（PIP）的纳米二氧化硅（SiO

-PIP），并用于增强SBS材料。首先，通过纳米SiO

表面的羟基与2-（十二烷基三硫代碳酸酷基）-2-甲基丙酸发生酯化反应，制备能够引发可逆加成-断裂链转移自由基（RAFT）聚合的纳米粒子（SiO

-CTA），再以此作为大分子链转移剂，引发异戊二烯单体发生RAFT聚合，得到SiO

-PIP。采用傅立叶红外光谱（FTIR）以及热失重分析（TGA）测试表明，运用RAFT聚合的方法成功地将聚异戊二烯接枝到纳米SiO

的表面，接枝量为2.1%（wt)。将SiO

-PIP通过混炼的方式引入到SBS弹性体中，扫描电子显微镜（SEM）表征结果表明纳米粒子接枝PIP后在材料中的分散性提高，材料的力学性能也有明显提高。

Abstract

In this contribution

we reported the investigation of SBS reinforcd by silicon dioxide-graft-polyisoprene core-shell nanoparticle (SiO

-PIP). First

the hydroxyl on the surface of SiO

nanoparticles was reacted with 2-methyl-2-[(dodecylsulfanylthiocarbonyl) sulfanyl] propanoic acid to afford a trithioester-capped SiO

(denoted). SiO

-CTA used as the nanoparticles chain transfer agent

SiO

-PIP core-shell nanoparticle was synthesized

via

reversible addition-fragmentation chain transfer polymerizations (RAFT). The results of FTIR spectroscopy and TGA showed that the grafting weight of PIP block in SiO

-PIP is 2.1wt%. Then

SiO

-PIP and SiO

were simultaneously incorporated into SBS. The results of scanning electron microscope (SEM) showed that SiO

microdomains in SBS/SiO

-PIP composite had much better dispersion and distribution than SiO

in SBS/SiO

composite. It is the filler-rubber interaction of SBS/SiO

-PIP composite that endowed the composite with improved mechanical properties.

关键词

SiO2-g-PIPRAFT聚合纳米复合材料力学性能

Keywords

SiO2-g-PIPRAFT polymerizationNanostructured compositeMechanical properties

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