Trivedi, Trivedi, Ajiboye, Adejumoke Lara, Coleman, Nichola, Bhomia, Ruchir and Bascougnano, Marion (2022) Melting point depression of poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock polymers in supercritical carbon dioxide in the presence of menthol as a solid co-plasticiser. Polymers, 14 (14):2825. ISSN 2073-4360 (Online) (doi:10.3390/polym14142825)

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Abstract

The melting behaviour of the triblock polymers, Pluronic F38, F68, F77, F108, and F127, was investigated in pressurised CO2 and in the presence of menthol. The melting points of the polymers combined with 0, 10, 25, and 50 wt% of menthol were studied at atmospheric pressure and compared with those at 10 and 20 MPa in supercritical carbon dioxide (scCO2). The highest melting point depressions of 16.8 ± 0.5 ◦C and 29.0 ± 0.3 ◦C were observed at 10 and 20 MPa, respectively. The melting point of triblock polymers in pressurised CO2 was found to be dependent on molecular weight, poly(propylene oxide) (PPO) content, and menthol percentage. The melting point of most of the polymers studied in this work can be reduced to room temperature, which can be pivotal to the formulation development of thermolabile substances using these polymers.

Item Type:	Article
Additional Information:	This article belongs to the Section Polymer Processing and Engineering.
Uncontrolled Keywords:	melting point depression; triblock polymers; supercritical carbon dioxide; solid co-plasticiser
Subjects:	Q Science > QD Chemistry T Technology > TP Chemical technology
Faculty / School / Research Centre / Research Group:	Faculty of Engineering & Science Faculty of Engineering & Science > School of Science (SCI)
Related URLs:	Publisher
Last Modified:	13 Jul 2022 07:47
URI:	http://gala.gre.ac.uk/id/eprint/36998

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