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SANS from P85/Water-d Under Pressure

Published

Author(s)

Bryna Clover, Boualem Hammouda

Abstract

Pluronics are triblock copolymers of PEO-PPO-PEO. Pluronic P85 forms a rich phase behavior when dissolved in water. Unimers are observed at low temperature while micelles form at higher temperatures. Spherical, cylindrical and lamellar micelles are observed sequentially upon heating. The effect of hydrostatic pressure on the phase boundaries is investigated here using small-angle neutron scattering from a dilute P85 solution in deuterated water. The transition temperatures between these micelle phases are found to rise with increasing pressure. A new phase corresponding to demixed lamellae was observed at high temperature. The effect of pressure was seen to decrease the onset formation line of that new phase.
Citation
Langmuir
Volume
26
Issue
9

Keywords

Pluronics, P85, Pressure Effects, Small-Angle Neutron Scattering, SANS

Citation

Clover, B. and Hammouda, B. (2010), SANS from P85/Water-d Under Pressure, Langmuir, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=904128 (Accessed April 13, 2024)
Created May 3, 2010, Updated October 12, 2021