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Calcium Oxalate Monohydrate Precipitation at Phospholipid Monolayer Phase Boundaries

  • Isa O. Benítez (a1) and Daniel R. Talham (a1)

Abstract

The precipitation of calcium oxalate monohydrate (COM) was observed at biphasic phospholipid Langmuir monolayers with the aid of Brewster angle microscopy. COM appears preferentially at phase boundaries of a monolayer of 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC) in a state of liquid expanded/liquid condensed coexistance. However, when the phase boundary is created by two different phospholipids that are phase segregated, such as DPPC and 1,2-dimiristoyl-sn-glycero-3-phosphocholine (DMPC), crystal formation occurs away from the interface. It is suggested that COM growth at phase boundaries is preferred only when there is molecular exchange between the phases.

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Calcium Oxalate Monohydrate Precipitation at Phospholipid Monolayer Phase Boundaries

  • Isa O. Benítez (a1) and Daniel R. Talham (a1)

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