Solubility, diffusivity, and retrograde vitrification in PMMA-CO₂, and development of sub-micron cellular structures

Alternative title	Solubility, diffusivity, and retrograde vitrification in PMMA-CO2, and development of sub-micron cellular structures
DOI	Resolve DOI: https://doi.org/10.1177/026248930102000101
Author	Search for: Handa, Y. Paul; Search for: Zhang, Zhiyi; Search for: Wong, Brian
Format	Text, Article
Abstract	A magnetic suspension balance was used to measure solubility of CO₂ in PMMA in the temperature range 0 to 167°C and at pressures to 61.2 atm. CO₂ dissolves to considerable extent in PMMA, reaching a value of about 30 wt% at 0°C and 34 atm. Diffusion coefficients, derived from the sorption kinetics, were analyzed to extract glass transition temperature of the PMMA-CO₂ system over the pressure range of 0 to about 60 atm. The results confirm the existence of retrograde vitrification in this system previously observed by creep compliance and high-pressure thermal analysis techniques. A fundamental understanding of the polymer-gas interactions has led to the development of novel, sub-micron cellular structures.
Publication date	2001-01-01
Publisher	Sage
In	Cellular Polymers 20, no. 1: 1–16.
Peer reviewed	Yes
NRC publication	This is a non-NRC publication "Non-NRC publications" are publications authored by NRC employees prior to their employment by NRC.
NPARC number	12744585
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Record identifier	719e53cb-fe82-4a72-b578-15c72534bfc0
Record created	2009-10-27
Record modified	2020-06-15