Interfacial concentration profiles of rubbery polyolefin lamellae determined by quantitative electron microscopy

Enrique D. Gomez; Megan L. Ruegg; Andrew M. Minor; Christian Kisielowski; Kenneth H. Downing; Robert M. Glaeser; Nitash P. Balsara

doi:10.1021/ma071498t

Interfacial concentration profiles of rubbery polyolefin lamellae determined by quantitative electron microscopy

Enrique D. Gomez, Megan L. Ruegg, Andrew M. Minor, Christian Kisielowski, Kenneth H. Downing, Robert M. Glaeser, Nitash P. Balsara

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

10 Scopus citations

Abstract

The composition profile across a lamellar phase obtained in a multicomponent blend of saturated poly(butadiene) and poly(isobutylene), stabilized by a saturated poly(butadiene) copolymer serving as a surfactant, was quantified by transmission electron microscopy (TEM) and self-consistent field theory (SCFT). The liquidlike nature of this system at room temperature makes traditional staining methods for the enhancement of contrast ineffective. Instead, we take advantage of the large inelastic scattering cross-section of soft materials to generate contrast in zero-loss TEM images. Independent spatially resolved thickness measurements enable quantification of electron scattering. This enabled a comparison between the TEM data and predictions based on SCFT without any adjustable parameters.

Original language	English (US)
Pages (from-to)	156-162
Number of pages	7
Journal	Macromolecules
Volume	41
Issue number	1
DOIs	https://doi.org/10.1021/ma071498t
State	Published - Jan 8 2008

All Science Journal Classification (ASJC) codes

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/ma071498t

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title = "Interfacial concentration profiles of rubbery polyolefin lamellae determined by quantitative electron microscopy",

abstract = "The composition profile across a lamellar phase obtained in a multicomponent blend of saturated poly(butadiene) and poly(isobutylene), stabilized by a saturated poly(butadiene) copolymer serving as a surfactant, was quantified by transmission electron microscopy (TEM) and self-consistent field theory (SCFT). The liquidlike nature of this system at room temperature makes traditional staining methods for the enhancement of contrast ineffective. Instead, we take advantage of the large inelastic scattering cross-section of soft materials to generate contrast in zero-loss TEM images. Independent spatially resolved thickness measurements enable quantification of electron scattering. This enabled a comparison between the TEM data and predictions based on SCFT without any adjustable parameters.",

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T1 - Interfacial concentration profiles of rubbery polyolefin lamellae determined by quantitative electron microscopy

AU - Gomez, Enrique D.

AU - Ruegg, Megan L.

AU - Minor, Andrew M.

AU - Kisielowski, Christian

AU - Downing, Kenneth H.

AU - Glaeser, Robert M.

AU - Balsara, Nitash P.

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AB - The composition profile across a lamellar phase obtained in a multicomponent blend of saturated poly(butadiene) and poly(isobutylene), stabilized by a saturated poly(butadiene) copolymer serving as a surfactant, was quantified by transmission electron microscopy (TEM) and self-consistent field theory (SCFT). The liquidlike nature of this system at room temperature makes traditional staining methods for the enhancement of contrast ineffective. Instead, we take advantage of the large inelastic scattering cross-section of soft materials to generate contrast in zero-loss TEM images. Independent spatially resolved thickness measurements enable quantification of electron scattering. This enabled a comparison between the TEM data and predictions based on SCFT without any adjustable parameters.

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Interfacial concentration profiles of rubbery polyolefin lamellae determined by quantitative electron microscopy

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