Tunable Friction by Employment of Co-Non-Solvency of PNIPAM Brushes

Yunlong Yu; Marco Cirelli; Bernard D. Kieviet; E. Stefan Kooij; G. Julius Vancso; Sissi de Beer

doi:10.1016/j.polymer.2016.08.029

Tunable Friction by Employment of Co-Non-Solvency of PNIPAM Brushes

Yunlong Yu, Marco Cirelli, Bernard D. Kieviet, E. Stefan Kooij, G. Julius Vancso, Sissi de Beer^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

38 Citations (Scopus)

76 Downloads (Pure)

Abstract

We present a simple method to control the tribological properties of contacts between polymer brushes and a solid counter surface. We show, using atomic force microscopy (AFM) experiments, that the friction force, upon relative sliding of a poly(N-isopropyl acrylamide) (PNIPAM) brush and a gold colloid on an AFM cantilever, varies over two orders of magnitude when changing the composition of an ethanol-water mixture that solvates the brush. We achieve this large variation in friction via a co-non-solvency effect: In pure water or ethanol, the PNIPAM brush is swollen and the friction is low, while in a 10-90 vol % ethanol-water mixture, the brush is partly collapsed and polymer-stretching causes the friction to be high.

Original language	English
Pages (from-to)	372-378
Journal	Polymer
Volume	102
DOIs	https://doi.org/10.1016/j.polymer.2016.08.029
Publication status	Published - 2016

Keywords

2023 OA procedure

Access to Document

10.1016/j.polymer.2016.08.029

ArticleFinal published version, 850 KBLicence: Taverne

Cite this

@article{32914b3f0d2941879f5889eb4339bdf4,

title = "Tunable Friction by Employment of Co-Non-Solvency of PNIPAM Brushes",

abstract = "We present a simple method to control the tribological properties of contacts between polymer brushes and a solid counter surface. We show, using atomic force microscopy (AFM) experiments, that the friction force, upon relative sliding of a poly(N-isopropyl acrylamide) (PNIPAM) brush and a gold colloid on an AFM cantilever, varies over two orders of magnitude when changing the composition of an ethanol-water mixture that solvates the brush. We achieve this large variation in friction via a co-non-solvency effect: In pure water or ethanol, the PNIPAM brush is swollen and the friction is low, while in a 10-90 vol % ethanol-water mixture, the brush is partly collapsed and polymer-stretching causes the friction to be high.",

keywords = "2023 OA procedure",

author = "Yunlong Yu and Marco Cirelli and Kieviet, {Bernard D.} and Kooij, {E. Stefan} and Vancso, {G. Julius} and {de Beer}, Sissi",

year = "2016",

doi = "10.1016/j.polymer.2016.08.029",

language = "English",

volume = "102",

pages = "372--378",

journal = "Polymer",

issn = "0032-3861",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Tunable Friction by Employment of Co-Non-Solvency of PNIPAM Brushes

AU - Yu, Yunlong

AU - Cirelli, Marco

AU - Kieviet, Bernard D.

AU - Kooij, E. Stefan

AU - Vancso, G. Julius

AU - de Beer, Sissi

PY - 2016

Y1 - 2016

N2 - We present a simple method to control the tribological properties of contacts between polymer brushes and a solid counter surface. We show, using atomic force microscopy (AFM) experiments, that the friction force, upon relative sliding of a poly(N-isopropyl acrylamide) (PNIPAM) brush and a gold colloid on an AFM cantilever, varies over two orders of magnitude when changing the composition of an ethanol-water mixture that solvates the brush. We achieve this large variation in friction via a co-non-solvency effect: In pure water or ethanol, the PNIPAM brush is swollen and the friction is low, while in a 10-90 vol % ethanol-water mixture, the brush is partly collapsed and polymer-stretching causes the friction to be high.

AB - We present a simple method to control the tribological properties of contacts between polymer brushes and a solid counter surface. We show, using atomic force microscopy (AFM) experiments, that the friction force, upon relative sliding of a poly(N-isopropyl acrylamide) (PNIPAM) brush and a gold colloid on an AFM cantilever, varies over two orders of magnitude when changing the composition of an ethanol-water mixture that solvates the brush. We achieve this large variation in friction via a co-non-solvency effect: In pure water or ethanol, the PNIPAM brush is swollen and the friction is low, while in a 10-90 vol % ethanol-water mixture, the brush is partly collapsed and polymer-stretching causes the friction to be high.

KW - 2023 OA procedure

U2 - 10.1016/j.polymer.2016.08.029

DO - 10.1016/j.polymer.2016.08.029

M3 - Article

SN - 0032-3861

VL - 102

SP - 372

EP - 378

JO - Polymer

JF - Polymer

ER -

Tunable Friction by Employment of Co-Non-Solvency of PNIPAM Brushes

Abstract

Keywords

Access to Document

Fingerprint

Cite this