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Effect of pressure on the melting point of pluronics in pressurized carbon dioxide

Effect of pressure on the melting point of pluronics in pressurized carbon dioxide

Bhomia, Ruchir, Trivedi, Vivek, Mitchell, John, Coleman, Nichola and Snowden, Martin (2014) Effect of pressure on the melting point of pluronics in pressurized carbon dioxide. Industrial & Engineering Chemistry Research, 53 (26). pp. 10820-10825. ISSN 0888-5885 (doi:10.1021/ie501344m)

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Abstract

The melting points of Pluronic F-77, F-127, F-68, F-38, and F-108 were investigated in pressurized CO2 between a pressure range of 2.0–50.0 MPa. Unprocessed and CO2-processed Pluronic samples were analyzed by differential scanning calorimetry (DSC) and powder X-ray diffraction (PXRD). A melting point depression in the range of 18.1 (± 0.5 K) to 19.3 (± 0.3 K) was observed for all Pluronics studied in this work. The melting point of Pluronics in pressurized CO2 was found to be independent of their molecular weight and poly(propylene oxide) [PPO] content. Analysis by DSC and PXRD revealed that CO2 processing had no impact on the morphology of Pluronics.

Item Type: Article
Uncontrolled Keywords: Pluronics, Carbon dioxide
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Faculty / Department / Research Group: Faculty of Engineering & Science > Department of Engineering Science
Last Modified: 17 Oct 2016 09:14
URI: http://gala.gre.ac.uk/id/eprint/14545

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