Issue 2, 2013
From the journal:

Soft Matter

Impact dynamics of droplets with silicananoparticles and polymer additives

Duyang Zang,*a   Xiaolu Wang,a   Xingguo Geng,a   Yongjian Zhangb  and  Yongmei Chenc  

* Corresponding authors

a Key Laboratory of Space Applied Physics and Chemistry of Ministry of Education, School of Science, Northwestern Polytechnical University, Xi'an 710129, China
E-mail: dyzang@nwpu.edu.cn
Fax: +86-29-88431618
Tel: +86-29-88431618

b State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China

c Department of Chemistry, School of Science, MOE Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed Matter, Xi'an Jiaotong University, Xi'an 710049, China

Abstract

We investigate the impact dynamics of droplets containing silica nanoparticles and/or poly(ethylene oxide) (PEO) additives by using a high speed camera, and relate the impact behavior to the rheological properties of liquids. For a droplet with both particles and polymer additives, the rebound is damped much faster and the instability behavior is suppressed. Interestingly, the rebound can be inhibited even when impact is at high velocity (1.88 m s−1). The transition from “rebound” to “stick” by enhancing the impact velocity is mainly due to the increase of the friction force of the nanoparticles and polymer aggregates with the substrate. This is confirmed by the increase of the sliding angle with impact velocity.

Graphical abstract: Impact dynamics of droplets with silica nanoparticles and polymer additives

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Article information

DOI
https://doi.org/10.1039/C2SM26759D
Article type
Paper
Submitted
30 Jul 2012
Accepted
01 Oct 2012
First published
22 Oct 2012

Soft Matter, 2013,9, 394-400

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Impact dynamics of droplets with silica nanoparticles and polymer additives

D. Zang, X. Wang, X. Geng, Y. Zhang and Y. Chen, Soft Matter, 2013, 9, 394 DOI: 10.1039/C2SM26759D

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