Two-dimensional marangoni-instability-induced periodic patterns of polymer blend films cast on tilted substrates

Kuen Hua Wu; Shih Yuan Lu; Hsin Lung Chen; Yen Yi Chen

doi:10.1002/macp.200700471

Two-dimensional marangoni-instability-induced periodic patterns of polymer blend films cast on tilted substrates

Kuen Hua Wu
, Shih Yuan Lu^*
, Hsin Lung Chen
, Yen Yi Chen

^*Corresponding author for this work

National Tsing Hua University

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

11 Scopus citations

Abstract

Two-dimensional periodic patterns were observed for PS/PVP blend films and the corresponding homopolymer films on tilted glass substrates. They were attributed to the Marangoni instability resulting from surface tension non-uniformity. For the 1:1 PS-1/PVP-1 blend films, two-dimensional regular arrays of the separated phases were observed, similar to those observed on homopolymer films from thickness variations. In addition, for the PS-2/PVP-2 blend films of 30/70 composition, one-dimensional strip patterns of separated phases were observed. The pattern formation mechanism is discussed and a characteristic parameter, defined as the ratio of the final film thickness to initial solution viscosity, is found to correlate well with the pattern regularity through variation in polymer concentration.

Original language	English
Pages (from-to)	615-624
Number of pages	10
Journal	Macromolecular Chemistry and Physics
Volume	209
Issue number	6
DOIs	https://doi.org/10.1002/macp.200700471
State	Published - 25 03 2008
Externally published	Yes

Keywords

Blends
Marangoni instability
Periodic pattern
Phase separation
Self-organization

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10.1002/macp.200700471

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title = "Two-dimensional marangoni-instability-induced periodic patterns of polymer blend films cast on tilted substrates",

abstract = "Two-dimensional periodic patterns were observed for PS/PVP blend films and the corresponding homopolymer films on tilted glass substrates. They were attributed to the Marangoni instability resulting from surface tension non-uniformity. For the 1:1 PS-1/PVP-1 blend films, two-dimensional regular arrays of the separated phases were observed, similar to those observed on homopolymer films from thickness variations. In addition, for the PS-2/PVP-2 blend films of 30/70 composition, one-dimensional strip patterns of separated phases were observed. The pattern formation mechanism is discussed and a characteristic parameter, defined as the ratio of the final film thickness to initial solution viscosity, is found to correlate well with the pattern regularity through variation in polymer concentration.",

keywords = "Blends, Marangoni instability, Periodic pattern, Phase separation, Self-organization",

author = "Wu, \{Kuen Hua\} and Lu, \{Shih Yuan\} and Chen, \{Hsin Lung\} and Chen, \{Yen Yi\}",

year = "2008",

month = mar,

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doi = "10.1002/macp.200700471",

language = "英语",

volume = "209",

pages = "615--624",

journal = "Macromolecular Chemistry and Physics",

issn = "1022-1352",

publisher = "Wiley-VCH Verlag",

number = "6",

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TY - JOUR

T1 - Two-dimensional marangoni-instability-induced periodic patterns of polymer blend films cast on tilted substrates

AU - Wu, Kuen Hua

AU - Lu, Shih Yuan

AU - Chen, Hsin Lung

AU - Chen, Yen Yi

PY - 2008/3/25

Y1 - 2008/3/25

N2 - Two-dimensional periodic patterns were observed for PS/PVP blend films and the corresponding homopolymer films on tilted glass substrates. They were attributed to the Marangoni instability resulting from surface tension non-uniformity. For the 1:1 PS-1/PVP-1 blend films, two-dimensional regular arrays of the separated phases were observed, similar to those observed on homopolymer films from thickness variations. In addition, for the PS-2/PVP-2 blend films of 30/70 composition, one-dimensional strip patterns of separated phases were observed. The pattern formation mechanism is discussed and a characteristic parameter, defined as the ratio of the final film thickness to initial solution viscosity, is found to correlate well with the pattern regularity through variation in polymer concentration.

AB - Two-dimensional periodic patterns were observed for PS/PVP blend films and the corresponding homopolymer films on tilted glass substrates. They were attributed to the Marangoni instability resulting from surface tension non-uniformity. For the 1:1 PS-1/PVP-1 blend films, two-dimensional regular arrays of the separated phases were observed, similar to those observed on homopolymer films from thickness variations. In addition, for the PS-2/PVP-2 blend films of 30/70 composition, one-dimensional strip patterns of separated phases were observed. The pattern formation mechanism is discussed and a characteristic parameter, defined as the ratio of the final film thickness to initial solution viscosity, is found to correlate well with the pattern regularity through variation in polymer concentration.

KW - Blends

KW - Marangoni instability

KW - Periodic pattern

KW - Phase separation

KW - Self-organization

UR - https://www.scopus.com/pages/publications/55349103416

U2 - 10.1002/macp.200700471

DO - 10.1002/macp.200700471

M3 - 文章

AN - SCOPUS:55349103416

SN - 1022-1352

VL - 209

SP - 615

EP - 624

JO - Macromolecular Chemistry and Physics

JF - Macromolecular Chemistry and Physics

IS - 6

ER -

Two-dimensional marangoni-instability-induced periodic patterns of polymer blend films cast on tilted substrates

Abstract

Keywords

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