Confinement Effect on the Effective Viscosity of Plasticized Polymer Films

F. Chen; D. Peng; Y. Ogata; K. Tanaka; Z. Yang; Y. Fujii; N. L. Yamada; Chi Hang Lam; O. K.C. Tsui

doi:10.1021/acs.macromol.5b01780

Confinement Effect on the Effective Viscosity of Plasticized Polymer Films

F. Chen, D. Peng, Y. Ogata, K. Tanaka, Z. Yang, Y. Fujii, N. L. Yamada, Chi Hang Lam, O. K.C. Tsui

Research output: Journal article publication › Journal article › Academic research › peer-review

27 Citations (Scopus)

Abstract

We have measured the effective viscosity of polystyrene films with a small (4 wt %) added amount of dioctyl phthalate (DOP) deposited on silica. A broad range of molecular weights, Mw, from 13.7 to 2100 kg/mol was investigated. Our result shows that for the thin films with Mw< ∼100 kg/mol the addition of DOP causes the effective viscosity to decrease by a factor of ∼4, independent of Mw. But for the higher Mwfilms, the effective viscosity of the DOP added films creeps toward that of the neat films with increasing Mw. A model assuming the effective viscosity to be dominated by enhanced surface mobility for the lower Mwfilms but surface-promoted interfacial slippage for the higher Mwfilms is able to account for the experimental observations.

Original language	English
Pages (from-to)	7719-7726
Number of pages	8
Journal	Macromolecules
Volume	48
Issue number	20
DOIs	https://doi.org/10.1021/acs.macromol.5b01780
Publication status	Published - 27 Oct 2015

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

More information

10.1021/acs.macromol.5b01780

http://hdl.handle.net/10397/96218

Cite this

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abstract = "We have measured the effective viscosity of polystyrene films with a small (4 wt %) added amount of dioctyl phthalate (DOP) deposited on silica. A broad range of molecular weights, Mw, from 13.7 to 2100 kg/mol was investigated. Our result shows that for the thin films with Mw< ∼100 kg/mol the addition of DOP causes the effective viscosity to decrease by a factor of ∼4, independent of Mw. But for the higher Mwfilms, the effective viscosity of the DOP added films creeps toward that of the neat films with increasing Mw. A model assuming the effective viscosity to be dominated by enhanced surface mobility for the lower Mwfilms but surface-promoted interfacial slippage for the higher Mwfilms is able to account for the experimental observations.",

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AU - Chen, F.

AU - Peng, D.

AU - Ogata, Y.

AU - Tanaka, K.

AU - Yang, Z.

AU - Fujii, Y.

AU - Yamada, N. L.

AU - Lam, Chi Hang

AU - Tsui, O. K.C.

PY - 2015/10/27

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N2 - We have measured the effective viscosity of polystyrene films with a small (4 wt %) added amount of dioctyl phthalate (DOP) deposited on silica. A broad range of molecular weights, Mw, from 13.7 to 2100 kg/mol was investigated. Our result shows that for the thin films with Mw< ∼100 kg/mol the addition of DOP causes the effective viscosity to decrease by a factor of ∼4, independent of Mw. But for the higher Mwfilms, the effective viscosity of the DOP added films creeps toward that of the neat films with increasing Mw. A model assuming the effective viscosity to be dominated by enhanced surface mobility for the lower Mwfilms but surface-promoted interfacial slippage for the higher Mwfilms is able to account for the experimental observations.

AB - We have measured the effective viscosity of polystyrene films with a small (4 wt %) added amount of dioctyl phthalate (DOP) deposited on silica. A broad range of molecular weights, Mw, from 13.7 to 2100 kg/mol was investigated. Our result shows that for the thin films with Mw< ∼100 kg/mol the addition of DOP causes the effective viscosity to decrease by a factor of ∼4, independent of Mw. But for the higher Mwfilms, the effective viscosity of the DOP added films creeps toward that of the neat films with increasing Mw. A model assuming the effective viscosity to be dominated by enhanced surface mobility for the lower Mwfilms but surface-promoted interfacial slippage for the higher Mwfilms is able to account for the experimental observations.

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DO - 10.1021/acs.macromol.5b01780

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JO - Macromolecules

JF - Macromolecules

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Confinement Effect on the Effective Viscosity of Plasticized Polymer Films

Abstract

ASJC Scopus subject areas

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