Spherical to cylindrical microdomain transformation by application of a flow field

C. Park; S. Simmons; L. J. Fetters; B. Hsiao; F. Yeh; E. L. Thomas

doi:10.1016/S0032-3861(99)00443-7

Spherical to cylindrical microdomain transformation by application of a flow field

C. Park
, S. Simmons
, L. J. Fetters
, B. Hsiao
, F. Yeh
, E. L. Thomas

Chemistry

Massachusetts Institute of Technology
Candescent Technol. Corp. 6580 V.
ExxonMobil
Stony Brook University

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

36 Scopus citations

Abstract

A structural transformation from a spherical microdomain structure to a cylindrical one in a semicrystalline polystyrene-b-polyethylenepropylene-b- polyethylene (PS/PEP/PE) terpolymer having a total molecular weight of 103 kg/mol under a strong external flow field was observed. Quiescently formed samples made by evaporation of the polymer in decalin show the disordered spherical microdomain structure of polystyrene (PS). The roll cast process generated a cylindrical PS microdomain structure well oriented along the flow direction as determined by TEM and SAXS. We explain the observed structural transformation by an analogy to the behavior of surfactant systems under external forces and furthermore demonstrate that the cylindrical structure is an example of a facilitated equilibrium morphology development by an external force.

Original language	English
Pages (from-to)	2971-2977
Number of pages	7
Journal	Polymer
Volume	41
Issue number	8
DOIs	https://doi.org/10.1016/S0032-3861(99)00443-7
State	Published - Apr 2000

Keywords

External flow field
Polystyrene-b-polyethylenepropylene-b-polyethylene
Structural transformation

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10.1016/S0032-3861(99)00443-7

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title = "Spherical to cylindrical microdomain transformation by application of a flow field",

abstract = "A structural transformation from a spherical microdomain structure to a cylindrical one in a semicrystalline polystyrene-b-polyethylenepropylene-b- polyethylene (PS/PEP/PE) terpolymer having a total molecular weight of 103 kg/mol under a strong external flow field was observed. Quiescently formed samples made by evaporation of the polymer in decalin show the disordered spherical microdomain structure of polystyrene (PS). The roll cast process generated a cylindrical PS microdomain structure well oriented along the flow direction as determined by TEM and SAXS. We explain the observed structural transformation by an analogy to the behavior of surfactant systems under external forces and furthermore demonstrate that the cylindrical structure is an example of a facilitated equilibrium morphology development by an external force.",

keywords = "External flow field, Polystyrene-b-polyethylenepropylene-b-polyethylene, Structural transformation",

author = "C. Park and S. Simmons and Fetters, \{L. J.\} and B. Hsiao and F. Yeh and Thomas, \{E. L.\}",

year = "2000",

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doi = "10.1016/S0032-3861(99)00443-7",

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TY - JOUR

T1 - Spherical to cylindrical microdomain transformation by application of a flow field

AU - Park, C.

AU - Simmons, S.

AU - Fetters, L. J.

AU - Hsiao, B.

AU - Yeh, F.

AU - Thomas, E. L.

PY - 2000/4

Y1 - 2000/4

N2 - A structural transformation from a spherical microdomain structure to a cylindrical one in a semicrystalline polystyrene-b-polyethylenepropylene-b- polyethylene (PS/PEP/PE) terpolymer having a total molecular weight of 103 kg/mol under a strong external flow field was observed. Quiescently formed samples made by evaporation of the polymer in decalin show the disordered spherical microdomain structure of polystyrene (PS). The roll cast process generated a cylindrical PS microdomain structure well oriented along the flow direction as determined by TEM and SAXS. We explain the observed structural transformation by an analogy to the behavior of surfactant systems under external forces and furthermore demonstrate that the cylindrical structure is an example of a facilitated equilibrium morphology development by an external force.

AB - A structural transformation from a spherical microdomain structure to a cylindrical one in a semicrystalline polystyrene-b-polyethylenepropylene-b- polyethylene (PS/PEP/PE) terpolymer having a total molecular weight of 103 kg/mol under a strong external flow field was observed. Quiescently formed samples made by evaporation of the polymer in decalin show the disordered spherical microdomain structure of polystyrene (PS). The roll cast process generated a cylindrical PS microdomain structure well oriented along the flow direction as determined by TEM and SAXS. We explain the observed structural transformation by an analogy to the behavior of surfactant systems under external forces and furthermore demonstrate that the cylindrical structure is an example of a facilitated equilibrium morphology development by an external force.

KW - External flow field

KW - Polystyrene-b-polyethylenepropylene-b-polyethylene

KW - Structural transformation

UR - https://www.scopus.com/pages/publications/0343049011

U2 - 10.1016/S0032-3861(99)00443-7

DO - 10.1016/S0032-3861(99)00443-7

M3 - Article

AN - SCOPUS:0343049011

SN - 0032-3861

VL - 41

SP - 2971

EP - 2977

JO - Polymer

JF - Polymer

IS - 8

ER -

Spherical to cylindrical microdomain transformation by application of a flow field

Abstract

Keywords

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