Confined Block Copolymer Thin Films

Nagraj Koneripalli; Navjot Singh; Rastislav Levicky; Frank S. Bates; Patrick D. Gallagher; Sushil K. Satija

doi:10.1021/ma00112a041

Confined Block Copolymer Thin Films

Nagraj Koneripalli, Navjot Singh, Rastislav Levicky, Frank S. Bates, Patrick D. Gallagher, Sushil K. Satija

Chemical Engineering and Materials Science

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

151 Scopus citations

Abstract

Thin films of nearly symmetric diblock copolymers of poly(ethylenepropylene)-poly-(ethylethylene) (PEP-PEE) were investigated in confinement between two hard walls. The domain thickness was found to be a function of the film thickness. Mechanically stable films with an integral number of domains were found with the ordering parallel to the hard walls at all degrees of frustration. The PEE block was found to preferentially segregate to both the confining surfaces. A discontinuous first-order-like transition occurred in the number of domains. These results provide a new approach toward probing the influence of chain stretching (or dilation) on the stability of block copolymer structures.

Original language	English (US)
Pages (from-to)	2897-2904
Number of pages	8
Journal	Macromolecules
Volume	28
Issue number	8
DOIs	https://doi.org/10.1021/ma00112a041
State	Published - Apr 1 1995

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abstract = "Thin films of nearly symmetric diblock copolymers of poly(ethylenepropylene)-poly-(ethylethylene) (PEP-PEE) were investigated in confinement between two hard walls. The domain thickness was found to be a function of the film thickness. Mechanically stable films with an integral number of domains were found with the ordering parallel to the hard walls at all degrees of frustration. The PEE block was found to preferentially segregate to both the confining surfaces. A discontinuous first-order-like transition occurred in the number of domains. These results provide a new approach toward probing the influence of chain stretching (or dilation) on the stability of block copolymer structures.",

author = "Nagraj Koneripalli and Navjot Singh and Rastislav Levicky and Bates, {Frank S.} and Gallagher, {Patrick D.} and Satija, {Sushil K.}",

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T1 - Confined Block Copolymer Thin Films

AU - Koneripalli, Nagraj

AU - Singh, Navjot

AU - Levicky, Rastislav

AU - Bates, Frank S.

AU - Gallagher, Patrick D.

AU - Satija, Sushil K.

PY - 1995/4/1

Y1 - 1995/4/1

N2 - Thin films of nearly symmetric diblock copolymers of poly(ethylenepropylene)-poly-(ethylethylene) (PEP-PEE) were investigated in confinement between two hard walls. The domain thickness was found to be a function of the film thickness. Mechanically stable films with an integral number of domains were found with the ordering parallel to the hard walls at all degrees of frustration. The PEE block was found to preferentially segregate to both the confining surfaces. A discontinuous first-order-like transition occurred in the number of domains. These results provide a new approach toward probing the influence of chain stretching (or dilation) on the stability of block copolymer structures.

AB - Thin films of nearly symmetric diblock copolymers of poly(ethylenepropylene)-poly-(ethylethylene) (PEP-PEE) were investigated in confinement between two hard walls. The domain thickness was found to be a function of the film thickness. Mechanically stable films with an integral number of domains were found with the ordering parallel to the hard walls at all degrees of frustration. The PEE block was found to preferentially segregate to both the confining surfaces. A discontinuous first-order-like transition occurred in the number of domains. These results provide a new approach toward probing the influence of chain stretching (or dilation) on the stability of block copolymer structures.

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Confined Block Copolymer Thin Films

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