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Title: Low-Temperature Reactive Coupling at Polymer-Polymer Interfaces Facilitated by Supercritical Carbon Dioxide

Abstract

Supercritical CO2 (scCO{sub 2}) has been used to facilitate reactions in thin film bilayers between functionalized polystyrene and poly(methyl methacrylate) at temperatures far below the glass transition temperatures of the respective polymers. Secondary ion mass spectrometry (SIMS) is used to monitor the reaction progression directly by measuring the interfacial excess of deuterated PS. Complementary X-ray reflectometry (XR) yields the interfacial width and surface roughness of bilayer films for reactive systems with and without the addition of scCO{sub 2}, and comparisons are made with unreactive reference systems. From XR and SIMS analyses, the interfacial width and roughness have been found to be effectively independent of the reaction conditions employed here, and the primary impact of incorporated scCO{sub 2} is enhanced mobility of the reactive polymer chains. The use of scCO{sub 2} can change polymer mobility significantly enough over a very small temperature range ({Delta}T{approx}15 C) so that both diffusion- and reaction-controlled type behavior can be observed for otherwise identical systems.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
Sponsoring Org.:
Doe - Office Of Science
OSTI Identifier:
913759
Report Number(s):
BNL-78327-2007-JA
Journal ID: ISSN 0032-3861; POLMAG; TRN: US200804%%53
DOE Contract Number:  
DE-AC02-98CH10886
Resource Type:
Journal Article
Journal Name:
Polymer
Additional Journal Information:
Journal Volume: 46; Journal ID: ISSN 0032-3861
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CARBON DIOXIDE; SUPERCRITICAL STATE; PMMA; POLYSTYRENE; INTERFACES; ROUGHNESS; national synchrotron light source

Citation Formats

Harton, S, Stevie, F, Spontak, R, Koga, T, Rafailovich, M, Sokolov, J, and Ade, H. Low-Temperature Reactive Coupling at Polymer-Polymer Interfaces Facilitated by Supercritical Carbon Dioxide. United States: N. p., 2005. Web. doi:10.1016/j.polymer.2005.07.085.
Harton, S, Stevie, F, Spontak, R, Koga, T, Rafailovich, M, Sokolov, J, & Ade, H. Low-Temperature Reactive Coupling at Polymer-Polymer Interfaces Facilitated by Supercritical Carbon Dioxide. United States. https://doi.org/10.1016/j.polymer.2005.07.085
Harton, S, Stevie, F, Spontak, R, Koga, T, Rafailovich, M, Sokolov, J, and Ade, H. 2005. "Low-Temperature Reactive Coupling at Polymer-Polymer Interfaces Facilitated by Supercritical Carbon Dioxide". United States. https://doi.org/10.1016/j.polymer.2005.07.085.
@article{osti_913759,
title = {Low-Temperature Reactive Coupling at Polymer-Polymer Interfaces Facilitated by Supercritical Carbon Dioxide},
author = {Harton, S and Stevie, F and Spontak, R and Koga, T and Rafailovich, M and Sokolov, J and Ade, H},
abstractNote = {Supercritical CO2 (scCO{sub 2}) has been used to facilitate reactions in thin film bilayers between functionalized polystyrene and poly(methyl methacrylate) at temperatures far below the glass transition temperatures of the respective polymers. Secondary ion mass spectrometry (SIMS) is used to monitor the reaction progression directly by measuring the interfacial excess of deuterated PS. Complementary X-ray reflectometry (XR) yields the interfacial width and surface roughness of bilayer films for reactive systems with and without the addition of scCO{sub 2}, and comparisons are made with unreactive reference systems. From XR and SIMS analyses, the interfacial width and roughness have been found to be effectively independent of the reaction conditions employed here, and the primary impact of incorporated scCO{sub 2} is enhanced mobility of the reactive polymer chains. The use of scCO{sub 2} can change polymer mobility significantly enough over a very small temperature range ({Delta}T{approx}15 C) so that both diffusion- and reaction-controlled type behavior can be observed for otherwise identical systems.},
doi = {10.1016/j.polymer.2005.07.085},
url = {https://www.osti.gov/biblio/913759}, journal = {Polymer},
issn = {0032-3861},
number = ,
volume = 46,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 2005},
month = {Sat Jan 01 00:00:00 EST 2005}
}