Dynamics and conformation of single polymer chain in a slot coating flow

Jeong Yong Lee; Bo Kyung Ryu; Joo Sung Lee; Hyun Wook Jung; Jae Chun Hyun

doi:10.1063/1.2964654

Dynamics and conformation of single polymer chain in a slot coating flow

Jeong Yong Lee
, Bo Kyung Ryu
, Joo Sung Lee
, Hyun Wook Jung
, Jae Chun Hyun

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

To guarantee good mechanical and optical properties of coating products, it is important to control molecular orientation of polymer chains in liquids to be coated on the web or substrate. In this study, Brownian dynamics (BD) and the conventional computational flow dynamics (CFD) simulations have been incorporated to elucidate dynamics and conformation of a polymer molecule in coating flow regime. Flexible polymer chain, e.g., λ-DNA molecule here, changes its conformation, relying on its flow strength (Weissenberg number, Wi) and flow type parameter (α). Interestingly, in slot coating flow, the chain can be more extended by the extension-like flow field near the downstream free surface curvature. Due to the complex flow field within the slot coating bead region, the extensibility of polymer chain moving along the streamline has also been investigated by correlating with the effective Wi_eff and process conditions such as coating gap, web speed, and so on.

Original language	English
Title of host publication	The XVth International Congress on Rheology - The Society of Rheology 80th Annual Meeting
Pages	255-257
Number of pages	3
DOIs	https://doi.org/10.1063/1.2964654
Publication status	Published - 2008
Event	15th International Congress on Rheology - Monterey, CA, United States Duration: 2008 Aug 3 → 2008 Aug 8

Publication series

Name	AIP Conference Proceedings
Volume	1027
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Other

Other	15th International Congress on Rheology
Country/Territory	United States
City	Monterey, CA
Period	08/8/3 → 08/8/8

Keywords

Coating flows
Conformation
Extension flow

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1063/1.2964654

Cite this

Lee, JY, Ryu, BK, Lee, JS, Jung, HW & Hyun, JC 2008, Dynamics and conformation of single polymer chain in a slot coating flow. in The XVth International Congress on Rheology - The Society of Rheology 80th Annual Meeting. AIP Conference Proceedings, vol. 1027, pp. 255-257, 15th International Congress on Rheology, Monterey, CA, United States, 08/8/3. https://doi.org/10.1063/1.2964654

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title = "Dynamics and conformation of single polymer chain in a slot coating flow",

abstract = "To guarantee good mechanical and optical properties of coating products, it is important to control molecular orientation of polymer chains in liquids to be coated on the web or substrate. In this study, Brownian dynamics (BD) and the conventional computational flow dynamics (CFD) simulations have been incorporated to elucidate dynamics and conformation of a polymer molecule in coating flow regime. Flexible polymer chain, e.g., λ-DNA molecule here, changes its conformation, relying on its flow strength (Weissenberg number, Wi) and flow type parameter (α). Interestingly, in slot coating flow, the chain can be more extended by the extension-like flow field near the downstream free surface curvature. Due to the complex flow field within the slot coating bead region, the extensibility of polymer chain moving along the streamline has also been investigated by correlating with the effective Wieff and process conditions such as coating gap, web speed, and so on.",

keywords = "Coating flows, Conformation, Extension flow",

author = "Lee, \{Jeong Yong\} and Ryu, \{Bo Kyung\} and Lee, \{Joo Sung\} and Jung, \{Hyun Wook\} and Hyun, \{Jae Chun\}",

year = "2008",

doi = "10.1063/1.2964654",

language = "English",

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series = "AIP Conference Proceedings",

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TY - GEN

T1 - Dynamics and conformation of single polymer chain in a slot coating flow

AU - Lee, Jeong Yong

AU - Ryu, Bo Kyung

AU - Lee, Joo Sung

AU - Jung, Hyun Wook

AU - Hyun, Jae Chun

PY - 2008

Y1 - 2008

N2 - To guarantee good mechanical and optical properties of coating products, it is important to control molecular orientation of polymer chains in liquids to be coated on the web or substrate. In this study, Brownian dynamics (BD) and the conventional computational flow dynamics (CFD) simulations have been incorporated to elucidate dynamics and conformation of a polymer molecule in coating flow regime. Flexible polymer chain, e.g., λ-DNA molecule here, changes its conformation, relying on its flow strength (Weissenberg number, Wi) and flow type parameter (α). Interestingly, in slot coating flow, the chain can be more extended by the extension-like flow field near the downstream free surface curvature. Due to the complex flow field within the slot coating bead region, the extensibility of polymer chain moving along the streamline has also been investigated by correlating with the effective Wieff and process conditions such as coating gap, web speed, and so on.

AB - To guarantee good mechanical and optical properties of coating products, it is important to control molecular orientation of polymer chains in liquids to be coated on the web or substrate. In this study, Brownian dynamics (BD) and the conventional computational flow dynamics (CFD) simulations have been incorporated to elucidate dynamics and conformation of a polymer molecule in coating flow regime. Flexible polymer chain, e.g., λ-DNA molecule here, changes its conformation, relying on its flow strength (Weissenberg number, Wi) and flow type parameter (α). Interestingly, in slot coating flow, the chain can be more extended by the extension-like flow field near the downstream free surface curvature. Due to the complex flow field within the slot coating bead region, the extensibility of polymer chain moving along the streamline has also been investigated by correlating with the effective Wieff and process conditions such as coating gap, web speed, and so on.

KW - Coating flows

KW - Conformation

KW - Extension flow

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U2 - 10.1063/1.2964654

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T3 - AIP Conference Proceedings

SP - 255

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BT - The XVth International Congress on Rheology - The Society of Rheology 80th Annual Meeting

T2 - 15th International Congress on Rheology

Y2 - 3 August 2008 through 8 August 2008

ER -

Dynamics and conformation of single polymer chain in a slot coating flow

Abstract

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Keywords

ASJC Scopus subject areas

Access to Document

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