An Introduction to Elastohydrodynamic Lubrication

Bair, Scott

doi:10.1016/b978-0-444-64156-4.00001-5

Cited by 2 publications

(1 citation statement)

References 17 publications

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“…Frequency sweep measurements shows higher loss modulus (G") than the storage modulus (G') confirming that both the phases are liquid in nature (Figure S3). [18] Further, we measured the water content [9b] of the coacervates formed by this composition at pH 8 and found that the droplets contain high amount of water (77 � 3 %). The coacervates were found to be stable in presence of high concentration of urea, a well-known chaotropic agent, demonstrating no prominent role of hydrogen bonding (Figure S4).…”

Section: Coacervate Formation and Characterizationmentioning

confidence: 99%

Cumulative Effect of pH and Redox Triggers on Highly Adaptive Transient Coacervates

Chowdhuri

Das

Kushwaha

et al. 2023

Chemistry A European J

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An intricate synergism between multiple biochemical processes and physical conditions determines the formation and function of various biological self‐assemblies. Thus, a complex set of variables dictate the far‐from‐equilibrium nature of these biological assemblies. Mimicking such systems synthetically is a challenging task. We report multi‐stimuli responsive transient coacervation of an aldehyde‐appended polymer and a short peptide. The coacervates are formed by the disulphide linkages between the peptide molecules and the imine bond between the polymer and the peptide. Imines are susceptible to pH changes and the disulphide bonds can be tuned by oxidation/reduction processes. Thus, the coacervation is operational only under the combined effect of appropriate pH and oxidative conditions. Taking advantage of these facts, the coacervates are transiently formed under a pH cycle (urea‐urease/gluconolactone) and a non‐equilibrium redox cycle (TCEP/H2O2). Importantly, the system showed high adaptability toward environmental changes. The transient existence of the coacervates can be generated without any apparent change in size and shape within the same system through the sequential application of the above‐mentioned nonequilibrium reaction cycles. Additionally, the coacervation allows for efficient encapsulation/stabilisation of proteins. Thus, the system has the potential to be used for protein/drug delivery purposes in the future.

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Section: Coacervate Formation and Characterizationmentioning

confidence: 99%