The applicability of time-temperature superposition of dynamic mechanical data for miscible polymer blends that exhibit strong intermolecular interactions was investigated. Blends of the lithium salt of lightly sulfonated polystyrene ionomers (Li-SPS), 9-12mol% sulfonation, and N-methylated nylon-2,lO (mPA) were miscible over the composition range studied, 30-70 wt% ionomer. Time-temperature su...

Experiments on miscible, buoyantly unstable reaction-diffusion fronts and non-reacting displacement fronts in Hele-Shaw cells show a fingering-type instability whose wavelengths (λ) are consistent with an interfacial tension (Σ) caused by the change in chemical composition, even though the solutions are miscible in all proportions. The relation Σ ≈ K/τ , where τ is the interface thickness and K...

The measurement of the minimum miscibility pressure (MMP) is one of the most important steps in the project design of miscible gas injection for which several experimental and modeling methods have been proposed. On the other hand, the standard procedure for compositional studies of miscible gas injection process is the regression of EOS to the conventional PVT tests. Moreover, this procedure d...

Enzymatic synthesis of oligopeptides from l-phenylalanine ethyl ester hydrochloride (l-Phe-Et.HCl) and other l-form hydrophobic amino acid ester hydrochlorides in water miscible organic cosolvents was studied. Different proteases, water miscible cosolvents, and effect of different ratios of water miscible cosolvents for protease-catalyzed oligo-phenylalanine [oligo(l-Phe)] were compared. The im...

It is difficult to exploit low-permeability reservoirs, and CO2 flooding an effective method improve oil recovery from low permeability reservoirs. However, in the process of flooding, acidic fluids dissolved formation water will react with rock cause dissolution precipitation, resulting pores precipitates, changing evolution law seepage channels, destroying integrity, affecting effect displace...

Most research on CO2 flooding is focusing storage than CH4 recovery and mostly simulation-based. To our knowledge, there have been limited reported experimental injections capable of unlocking a high amount the residual methane due to their miscibility effect. The empirical study has highlighted impact N2 as booster gas during Enhanced Gas Recovery (EGR) process by flooding. acts buster re-pres...

Survival and growth of terrestrial plants is negatively affected by complete submergence. This is mainly the result of hampered gas exchange between plants and their environment, since gas diffusion is severely reduced in water compared with air, resulting in O2 deficits which limit aerobic respiration. The continuation of photosynthesis could probably alleviate submergence-stress in terrestria...