Surface Morphology Studies of Multiblock and Starblock Copolymers of Poly(α-methylstyrene) and Poly(dimethylsiloxane)

Xin Chen; Joseph A. Gardella; Philip L. Kumler

doi:10.1021/ma00067a009

Surface Morphology Studies of Multiblock and Starblock Copolymers of Poly(α-methylstyrene) and Poly(dimethylsiloxane)

Xin Chen
, Joseph A. Gardella
, Philip L. Kumler

Chemistry

SUNY Buffalo
State University of New York at Fredonia

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

39 Scopus citations

Abstract

Surface morphology and compositions of multiblock and starblock copolymers of poly(α-methylstyrene) (PMS) and poly(dimethylsiloxane) (PDMS) were investigated by cross-sectional transmission electron microscopy, angle- and energy-dependent ESCA, and infrared spectroscopy. The extent of surface segregation of PDMS was determined for multiblock and starblock copolymers to a depth of 210 Å. No surface excess was detected at depths probed by attenuated total reflectance Fourier transform infrared spectroscopy measurements. The PMS–PDMS block copolymers with high PDMS bulk concentrations (60 wt %) have a highly oriented lamellar morphology in the near air surface region, and the topmost air surface region (27 Å) is exclusively composed of PDMS. The PMS–PDMS block copolymers with lower PDMS bulk concentrations (40 wt %) have lesser or no domain orientation and the surface region includes detectable PMS.

Original language	English
Pages (from-to)	3778-3783
Number of pages	6
Journal	Macromolecules
Volume	26
Issue number	15
DOIs	https://doi.org/10.1021/ma00067a009
State	Published - 1993

Access to Document

10.1021/ma00067a009

Cite this

@article{98fa9433ff4b4960af0745c0235758a1,

title = "Surface Morphology Studies of Multiblock and Starblock Copolymers of Poly(α-methylstyrene) and Poly(dimethylsiloxane)",

abstract = "Surface morphology and compositions of multiblock and starblock copolymers of poly(α-methylstyrene) (PMS) and poly(dimethylsiloxane) (PDMS) were investigated by cross-sectional transmission electron microscopy, angle- and energy-dependent ESCA, and infrared spectroscopy. The extent of surface segregation of PDMS was determined for multiblock and starblock copolymers to a depth of 210 {\AA}. No surface excess was detected at depths probed by attenuated total reflectance Fourier transform infrared spectroscopy measurements. The PMS–PDMS block copolymers with high PDMS bulk concentrations (60 wt \%) have a highly oriented lamellar morphology in the near air surface region, and the topmost air surface region (27 {\AA}) is exclusively composed of PDMS. The PMS–PDMS block copolymers with lower PDMS bulk concentrations (40 wt \%) have lesser or no domain orientation and the surface region includes detectable PMS.",

author = "Xin Chen and Gardella, \{Joseph A.\} and Kumler, \{Philip L.\}",

year = "1993",

doi = "10.1021/ma00067a009",

language = "English",

volume = "26",

pages = "3778--3783",

journal = "Macromolecules",

issn = "0024-9297",

publisher = "American Chemical Society",

number = "15",

}

TY - JOUR

T1 - Surface Morphology Studies of Multiblock and Starblock Copolymers of Poly(α-methylstyrene) and Poly(dimethylsiloxane)

AU - Chen, Xin

AU - Gardella, Joseph A.

AU - Kumler, Philip L.

PY - 1993

Y1 - 1993

N2 - Surface morphology and compositions of multiblock and starblock copolymers of poly(α-methylstyrene) (PMS) and poly(dimethylsiloxane) (PDMS) were investigated by cross-sectional transmission electron microscopy, angle- and energy-dependent ESCA, and infrared spectroscopy. The extent of surface segregation of PDMS was determined for multiblock and starblock copolymers to a depth of 210 Å. No surface excess was detected at depths probed by attenuated total reflectance Fourier transform infrared spectroscopy measurements. The PMS–PDMS block copolymers with high PDMS bulk concentrations (60 wt %) have a highly oriented lamellar morphology in the near air surface region, and the topmost air surface region (27 Å) is exclusively composed of PDMS. The PMS–PDMS block copolymers with lower PDMS bulk concentrations (40 wt %) have lesser or no domain orientation and the surface region includes detectable PMS.

AB - Surface morphology and compositions of multiblock and starblock copolymers of poly(α-methylstyrene) (PMS) and poly(dimethylsiloxane) (PDMS) were investigated by cross-sectional transmission electron microscopy, angle- and energy-dependent ESCA, and infrared spectroscopy. The extent of surface segregation of PDMS was determined for multiblock and starblock copolymers to a depth of 210 Å. No surface excess was detected at depths probed by attenuated total reflectance Fourier transform infrared spectroscopy measurements. The PMS–PDMS block copolymers with high PDMS bulk concentrations (60 wt %) have a highly oriented lamellar morphology in the near air surface region, and the topmost air surface region (27 Å) is exclusively composed of PDMS. The PMS–PDMS block copolymers with lower PDMS bulk concentrations (40 wt %) have lesser or no domain orientation and the surface region includes detectable PMS.

UR - https://www.scopus.com/pages/publications/0027624525

U2 - 10.1021/ma00067a009

DO - 10.1021/ma00067a009

M3 - Article

AN - SCOPUS:0027624525

SN - 0024-9297

VL - 26

SP - 3778

EP - 3783

JO - Macromolecules

JF - Macromolecules

IS - 15

ER -

Surface Morphology Studies of Multiblock and Starblock Copolymers of Poly(α-methylstyrene) and Poly(dimethylsiloxane)

Abstract

Access to Document

Other files and links

Fingerprint

Cite this