A facile one-step method to synthesize SiO2@polydopamine core–shell nanospheres for shear thickening fluid

Mei Liu; Wanquan Jiang; Qian Chen; Sheng Wang; Ya Mao; Xinglong Gong; Ken C F LEUNG; Jie Tian; Huijuan Wang; Shouhu Xuan

doi:10.1039/c5ra25759j

A facile one-step method to synthesize SiO₂@polydopamine core–shell nanospheres for shear thickening fluid

Mei Liu, Wanquan Jiang^*, Qian Chen, Sheng Wang, Ya Mao, Xinglong Gong^*, Ken C F LEUNG, Jie Tian, Huijuan Wang, Shouhu Xuan^*

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

56 Citations (Scopus)

Abstract

A facile one-step method was developed to synthesize core–shell structured SiO₂@polydopamine (PDA) nanospheres. During the synthesis, a PDA shell was simultaneously coated on the SiO₂ nanospheres to form the core–shell nanostructure. The PDA shell thickness was tunable by varying the concentration of the starting dopamine precursor. After dispersing the core–shell nanospheres into poly(ethylene glycol) 200 (PEG200), a SiO₂@PDA based shear thickening fluid (STF) was obtained. In comparison to pristine SiO₂, the SiO₂@PDA based STF presented better ST effects and its maximum viscosity could reach as high as 194.6 Pa s. A possible enhancement mechanism was proposed in order to investigate the structural dependence of the ST effect. This high performance SiO₂@PDA based STF could be widely applied in body armor and other safe-guarding areas.

Original language	English
Pages (from-to)	29279-29287
Number of pages	9
Journal	RSC Advances
Volume	6
Issue number	35
DOIs	https://doi.org/10.1039/c5ra25759j
Publication status	Published - 2 Mar 2016

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Chemistry(all)
Chemical Engineering(all)

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@article{25eadf93028944a19c42934aae26ce49,

title = "A facile one-step method to synthesize SiO2@polydopamine core–shell nanospheres for shear thickening fluid",

abstract = "A facile one-step method was developed to synthesize core–shell structured SiO2@polydopamine (PDA) nanospheres. During the synthesis, a PDA shell was simultaneously coated on the SiO2 nanospheres to form the core–shell nanostructure. The PDA shell thickness was tunable by varying the concentration of the starting dopamine precursor. After dispersing the core–shell nanospheres into poly(ethylene glycol) 200 (PEG200), a SiO2@PDA based shear thickening fluid (STF) was obtained. In comparison to pristine SiO2, the SiO2@PDA based STF presented better ST effects and its maximum viscosity could reach as high as 194.6 Pa s. A possible enhancement mechanism was proposed in order to investigate the structural dependence of the ST effect. This high performance SiO2@PDA based STF could be widely applied in body armor and other safe-guarding areas.",

author = "Mei Liu and Wanquan Jiang and Qian Chen and Sheng Wang and Ya Mao and Xinglong Gong and LEUNG, {Ken C F} and Jie Tian and Huijuan Wang and Shouhu Xuan",

note = "Funding Information: Financial support from the National Natural Science Foundation of China (Grant No. 11372301), the Fundamental Research Funds for the Central Universities and the National Basic Research Program of China (973 Program, Grant No. 2012CB937500) are gratefully acknowledged. This study was also supported by the Collaborative Innovation Center of Suz-hou Nano Science and Technology.",

year = "2016",

month = mar,

day = "2",

doi = "10.1039/c5ra25759j",

language = "English",

volume = "6",

pages = "29279--29287",

journal = "RSC Advances",

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TY - JOUR

T1 - A facile one-step method to synthesize SiO2@polydopamine core–shell nanospheres for shear thickening fluid

AU - Liu, Mei

AU - Jiang, Wanquan

AU - Chen, Qian

AU - Wang, Sheng

AU - Mao, Ya

AU - Gong, Xinglong

AU - LEUNG, Ken C F

AU - Tian, Jie

AU - Wang, Huijuan

AU - Xuan, Shouhu

N1 - Funding Information: Financial support from the National Natural Science Foundation of China (Grant No. 11372301), the Fundamental Research Funds for the Central Universities and the National Basic Research Program of China (973 Program, Grant No. 2012CB937500) are gratefully acknowledged. This study was also supported by the Collaborative Innovation Center of Suz-hou Nano Science and Technology.

PY - 2016/3/2

Y1 - 2016/3/2

N2 - A facile one-step method was developed to synthesize core–shell structured SiO2@polydopamine (PDA) nanospheres. During the synthesis, a PDA shell was simultaneously coated on the SiO2 nanospheres to form the core–shell nanostructure. The PDA shell thickness was tunable by varying the concentration of the starting dopamine precursor. After dispersing the core–shell nanospheres into poly(ethylene glycol) 200 (PEG200), a SiO2@PDA based shear thickening fluid (STF) was obtained. In comparison to pristine SiO2, the SiO2@PDA based STF presented better ST effects and its maximum viscosity could reach as high as 194.6 Pa s. A possible enhancement mechanism was proposed in order to investigate the structural dependence of the ST effect. This high performance SiO2@PDA based STF could be widely applied in body armor and other safe-guarding areas.

AB - A facile one-step method was developed to synthesize core–shell structured SiO2@polydopamine (PDA) nanospheres. During the synthesis, a PDA shell was simultaneously coated on the SiO2 nanospheres to form the core–shell nanostructure. The PDA shell thickness was tunable by varying the concentration of the starting dopamine precursor. After dispersing the core–shell nanospheres into poly(ethylene glycol) 200 (PEG200), a SiO2@PDA based shear thickening fluid (STF) was obtained. In comparison to pristine SiO2, the SiO2@PDA based STF presented better ST effects and its maximum viscosity could reach as high as 194.6 Pa s. A possible enhancement mechanism was proposed in order to investigate the structural dependence of the ST effect. This high performance SiO2@PDA based STF could be widely applied in body armor and other safe-guarding areas.

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U2 - 10.1039/c5ra25759j

DO - 10.1039/c5ra25759j

M3 - Journal article

AN - SCOPUS:85007493769

SN - 2046-2069

VL - 6

SP - 29279

EP - 29287

JO - RSC Advances

JF - RSC Advances

IS - 35

ER -

A facile one-step method to synthesize SiO₂@polydopamine core–shell nanospheres for shear thickening fluid

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