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; C. H. 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
, C. H. Lam
, O. K.C. Tsui

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

30 Scopus citations

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, M_w, from 13.7 to 2100 kg/mol was investigated. Our result shows that for the thin films with M_w < ∼100 kg/mol the addition of DOP causes the effective viscosity to decrease by a factor of ∼4, independent of M_w. But for the higher M_w films, the effective viscosity of the DOP added films creeps toward that of the neat films with increasing M_w. A model assuming the effective viscosity to be dominated by enhanced surface mobility for the lower M_w films but surface-promoted interfacial slippage for the higher M_w films 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
State	Published - 27 Oct 2015
Externally published	Yes

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title = "Confinement Effect on the Effective Viscosity of Plasticized Polymer Films",

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 Mw films, 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 Mw films but surface-promoted interfacial slippage for the higher Mw films is able to account for the experimental observations.",

author = "F. Chen and D. Peng and Y. Ogata and K. Tanaka and Z. Yang and Y. Fujii and Yamada, \{N. L.\} and Lam, \{C. H.\} and Tsui, \{O. K.C.\}",

note = "Publisher Copyright: {\textcopyright} 2015 American Chemical Society.",

year = "2015",

month = oct,

day = "27",

doi = "10.1021/acs.macromol.5b01780",

language = "英语",

volume = "48",

pages = "7719--7726",

journal = "Macromolecules",

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TY - JOUR

T1 - Confinement Effect on the Effective Viscosity of Plasticized Polymer Films

AU - Chen, F.

AU - Peng, D.

AU - Ogata, Y.

AU - Tanaka, K.

AU - Yang, Z.

AU - Fujii, Y.

AU - Yamada, N. L.

AU - Lam, C. H.

AU - Tsui, O. K.C.

PY - 2015/10/27

Y1 - 2015/10/27

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 Mw films, 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 Mw films but surface-promoted interfacial slippage for the higher Mw films 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 Mw films, 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 Mw films but surface-promoted interfacial slippage for the higher Mw films is able to account for the experimental observations.

UR - https://www.scopus.com/pages/publications/84945415725

U2 - 10.1021/acs.macromol.5b01780

DO - 10.1021/acs.macromol.5b01780

M3 - 文章

AN - SCOPUS:84945415725

SN - 0024-9297

VL - 48

SP - 7719

EP - 7726

JO - Macromolecules

JF - Macromolecules

IS - 20

ER -

Confinement Effect on the Effective Viscosity of Plasticized Polymer Films

Abstract

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