Preparation of water-based silicone rubber based on nano SiO<sub>2</sub>/OTAC collaborative Pickering emulsion

ZHAI Junling; SHEN Minmin; SUN Chunning; WANG Junfeng; HA Chengyong

doi:10.11949/j.issn.0438-1157.20141547

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Preparation of water-based silicone rubber based on nano SiO₂/OTAC collaborative Pickering emulsion

更新时间：2025-12-10

- Preparation of water-based silicone rubber based on nano SiO₂/OTAC collaborative Pickering emulsion
- CIESC Journal Issue 4, Pages: 1585-1592(2015)
- 作者机构：
  
  1. 中国科学院广州化学研究所纤维素化学重点实验室,广东,广州,510650
  2. 中国科学院大学,北京,100049
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20141547
  CLC： Q050.4+25
- Online First：05 April 2015，
  
  Published：05 April 2015
- 稿件说明：
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ZHAI Junling, SHEN Minmin, SUN Chunning, et al. Preparation of water-based silicone rubber based on nano SiO₂/OTAC collaborative Pickering emulsion[J]. CIESC Journal, 2015, (4): 1585-1592. DOI: 10.11949/j.issn.0438-1157.20141547.
DOI：

ZHAI Junling, SHEN Minmin, SUN Chunning, et al. Preparation of water-based silicone rubber based on nano SiO₂/OTAC collaborative Pickering emulsion[J]. CIESC Journal, 2015, (4): 1585-1592. DOI: 10.11949/j.issn.0438-1157.20141547. DOI：

摘要

以十八烷基三甲基氯化铵(OTAC)协同纳米SiO2制备Pickering乳液

碱性条件下引发D4开环聚合制备线性聚硅氧烷(PDMS)

然后加入交联剂KH560制备阳离子型水基硅橡胶乳液。考察了纳米SiO2与OTAC用量对Pickering乳液性能的影响

通过zeta电位、TEM及SEM研究了OTAC在SiO2表面的吸附状态

用FT-IR、29Si NMR对水基硅橡胶的结构进行了表征

研究了KH560用量对橡胶膜对水接触角和邵氏硬度的影响。结果表明: w(SiO2)=2.0%时

乳液流动性和稳定性最优;w(OTAC) = 1.75%时

OTAC在纳米SiO2表面的单层吸附达到饱和

单体转化率为89%

粒径为617 nm

zeta电位接近零点

PDMS的数均分子量为16036

PDI为1.485;w(KH560)=5.0%时

KH560与PDMS充分水解缩合

硅橡胶膜憎水性和硬度显著提高。

Abstract

Pickering emulsion was obtained by using octadecyl trimethyl ammonium chloride (OTAC) in combination with nano SiO2

and linear polysiloxane (PDMS) was synthesized with D4 through ring-open polymerization under alkaline condition

and then cross-linking agent KH560 was added to prepare cationic water-based silicone rubber emulsion. The effects of SiO2 and OTAC contents on Pickering emulsion were investigated. The absorption behavior of OTAC on the surface of SiO2 was revealed by zeta potential

TEM and SEM. The structure of water-based silicone rubber was characterized with FT-IR

29Si NMR spectra. The effects of KH560 on the contact angle and Shore A hardness of the rubber film were also investigated. The emulsion possessed optimal liquidity and stability when w(SiO2)=2.0%. When w(OTAC)=1.75%

the absorption of OTAC reached saturation on the surface of SiO2

monomer conversion was about 89%

particle size was about 617 nm

zeta potential was close to zero

Mn and PDI for PDMS were 16036 and 1.485 respectively. When w(KH560)= 5.0%

PDMS hydrolyzed and condensed fully with KH560

and the obtained rubber film possessed optimal hydrophobicity and hardness.

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Preparation of water-based silicone rubber based on nano SiO2/OTAC collaborative Pickering emulsion

DOI：10.11949/j.issn.0438-1157.20141547

摘要

Abstract

关键词

Keywords

references

Preparation of water-based silicone rubber based on nano SiO₂/OTAC collaborative Pickering emulsion