Giant thermophoresis of poly(N-isopropylacrylamide) microgel particles

Research output: Contribution to journalArticle

Standard

Giant thermophoresis of poly(N-isopropylacrylamide) microgel particles. / Wongsuwarn, Simon; Vigolo, Daniele; Cerbino, Roberto; Howe, Andrew M.; Vailati, Alberto; Piazza, Roberto; Cicuta, Pietro.

In: Soft Matter, Vol. 8, No. 21, 07.06.2012, p. 5857-5863.

Research output: Contribution to journalArticle

Harvard

Wongsuwarn, S, Vigolo, D, Cerbino, R, Howe, AM, Vailati, A, Piazza, R & Cicuta, P 2012, 'Giant thermophoresis of poly(N-isopropylacrylamide) microgel particles', Soft Matter, vol. 8, no. 21, pp. 5857-5863. https://doi.org/10.1039/c2sm25061f

APA

Wongsuwarn, S., Vigolo, D., Cerbino, R., Howe, A. M., Vailati, A., Piazza, R., & Cicuta, P. (2012). Giant thermophoresis of poly(N-isopropylacrylamide) microgel particles. Soft Matter, 8(21), 5857-5863. https://doi.org/10.1039/c2sm25061f

Vancouver

Wongsuwarn S, Vigolo D, Cerbino R, Howe AM, Vailati A, Piazza R et al. Giant thermophoresis of poly(N-isopropylacrylamide) microgel particles. Soft Matter. 2012 Jun 7;8(21):5857-5863. https://doi.org/10.1039/c2sm25061f

Author

Wongsuwarn, Simon ; Vigolo, Daniele ; Cerbino, Roberto ; Howe, Andrew M. ; Vailati, Alberto ; Piazza, Roberto ; Cicuta, Pietro. / Giant thermophoresis of poly(N-isopropylacrylamide) microgel particles. In: Soft Matter. 2012 ; Vol. 8, No. 21. pp. 5857-5863.

Bibtex

@article{e5d3235c2e0346c8a73bf1ddf73569a1,
title = "Giant thermophoresis of poly(N-isopropylacrylamide) microgel particles",
abstract = "Thermophoresis is the rectification of Brownian motion induced by the presence of a thermal gradient ∇T, yielding a net drift of colloidal particles along or against the direction of ∇T. The effect is known to depend on the specific interactions between solute and solvent, and quantitative theoretical models are lacking except in a few simple experimental cases. Both the order of magnitude and the temperature dependence of the thermophoretic mobility DT are known to be very similar for a wide class of aqueous colloidal systems, ranging from latex colloids to polymers, surfactant micelles, proteins, and DNA. Here we show that thermoresponsive microgel particles made of poly(N-isopropylacrylamide) (PNIPAM) do not share, in the temperature range around the -point, these common features. Instead, DT displays an unusually strong temperature dependence, maintaining a linear growth across the collapse transition. This behaviour is not shared by linear PNIPAM chains, for which existing data show DT falling at the transition, with similar values between the expanded coil and collapsed globule states away from the transition point. A possible connection of the observed giant temperature dependence of DT to microgel hydration is suggested.",
author = "Simon Wongsuwarn and Daniele Vigolo and Roberto Cerbino and Howe, {Andrew M.} and Alberto Vailati and Roberto Piazza and Pietro Cicuta",
year = "2012",
month = jun,
day = "7",
doi = "10.1039/c2sm25061f",
language = "English",
volume = "8",
pages = "5857--5863",
journal = "Soft Matter",
issn = "1744-683X",
publisher = "Royal Society of Chemistry",
number = "21",

}

RIS

TY - JOUR

T1 - Giant thermophoresis of poly(N-isopropylacrylamide) microgel particles

AU - Wongsuwarn, Simon

AU - Vigolo, Daniele

AU - Cerbino, Roberto

AU - Howe, Andrew M.

AU - Vailati, Alberto

AU - Piazza, Roberto

AU - Cicuta, Pietro

PY - 2012/6/7

Y1 - 2012/6/7

N2 - Thermophoresis is the rectification of Brownian motion induced by the presence of a thermal gradient ∇T, yielding a net drift of colloidal particles along or against the direction of ∇T. The effect is known to depend on the specific interactions between solute and solvent, and quantitative theoretical models are lacking except in a few simple experimental cases. Both the order of magnitude and the temperature dependence of the thermophoretic mobility DT are known to be very similar for a wide class of aqueous colloidal systems, ranging from latex colloids to polymers, surfactant micelles, proteins, and DNA. Here we show that thermoresponsive microgel particles made of poly(N-isopropylacrylamide) (PNIPAM) do not share, in the temperature range around the -point, these common features. Instead, DT displays an unusually strong temperature dependence, maintaining a linear growth across the collapse transition. This behaviour is not shared by linear PNIPAM chains, for which existing data show DT falling at the transition, with similar values between the expanded coil and collapsed globule states away from the transition point. A possible connection of the observed giant temperature dependence of DT to microgel hydration is suggested.

AB - Thermophoresis is the rectification of Brownian motion induced by the presence of a thermal gradient ∇T, yielding a net drift of colloidal particles along or against the direction of ∇T. The effect is known to depend on the specific interactions between solute and solvent, and quantitative theoretical models are lacking except in a few simple experimental cases. Both the order of magnitude and the temperature dependence of the thermophoretic mobility DT are known to be very similar for a wide class of aqueous colloidal systems, ranging from latex colloids to polymers, surfactant micelles, proteins, and DNA. Here we show that thermoresponsive microgel particles made of poly(N-isopropylacrylamide) (PNIPAM) do not share, in the temperature range around the -point, these common features. Instead, DT displays an unusually strong temperature dependence, maintaining a linear growth across the collapse transition. This behaviour is not shared by linear PNIPAM chains, for which existing data show DT falling at the transition, with similar values between the expanded coil and collapsed globule states away from the transition point. A possible connection of the observed giant temperature dependence of DT to microgel hydration is suggested.

UR - http://www.scopus.com/inward/record.url?scp=84863228516&partnerID=8YFLogxK

U2 - 10.1039/c2sm25061f

DO - 10.1039/c2sm25061f

M3 - Article

AN - SCOPUS:84863228516

VL - 8

SP - 5857

EP - 5863

JO - Soft Matter

JF - Soft Matter

SN - 1744-683X

IS - 21

ER -