Polymers are widely used in solution to provide structure and function, e.g., viscoelasticity, colloidal stability, and delivery of actives. Underlying these functions are interand intra-molecular interactions that are modulated by the solvent used. Solvents can have a great impact on polymer conformation [Alexandridis and Yang, 2000]. A solvent may enable the dissolution of a certain polymer o...

The use of solvents, other than water, that are capable of dissolving proteins without entering into chemical combination with them, in contrast to the usual mode of procedure, by the addition of small amounts of acid or alkali, makes it possible to investigate the properties of proteins in one of their most important states, the isoelectric state. In the present investigation, one such propert...

The spinodal decomposition of quenched polymer/solvent and liquid-crystal/solvent mixtures in a miniature Taylor-Couette cell has been simulated by molecular dynamics. Three stacking motifs, each reflecting the geometry and symmetry of the cell, are most abundant among the fully phase separated stationary states. At zero or low angular velocity of the inner cylindrical drum, the two segregated ...

Problem statement: The extraction of lipids from microalgae for biofuel production is a significant problem due to the intractability of their cell wall. The aim of this study of lipid extraction from Nannochloropsis microalgae was to examine the relative efficiencies of some commonly used solvent systems and test the use of co-boiling solvents in Soxhlet extraction as an improved method. Appro...

The solubility of a ”heavy” alkane (solute) in ”light” (solvent) is generally temperature dependent. Moreover, it determined by the molar masses solute and solvent. In current paper, published data for binary normal-alkane mixtures reviewed (solid-liquid equilibrium). A total 43 unique solute-solvent data-sets, obtained from 24 experimental studies, are collected presented systematic manner. Ba...

In this work, the phase behavior of linear poly(N-isopropylacrylamide) (PNIPA) in water–solvent mixtures was investigated. Several solvents, including low molecular weight alcohols, were selected and phase separation temperatures were determined through cloud point measurements. All the studied systems exhibited the cononsolvency effect, i.e. lower PNIPA compatibility within definite ranges of ...

This paper considers the stability of thin liquid layers of binary mixtures of a volatile (solvent) species and a non-volatile (polymer) species. Evaporation leads to a depletion of the solvent near the liquid surface. If surface tension increases for lower solvent concentrations, sufficiently strong compositional gradients can lead to Bénard-Marangoni-type convection that is similar to the kin...

An extensive collection of data has been used to study the effects of solvent, structure, and temperature on the ionization equilibrium constants of some substituted phenols and pyridinium ions in water–1,4-dioxane mixtures (0–70% weight fraction in dioxane) and temperatures ranging from 10 to 50◦C. The effects of structure and solvent are explained using Hammett’s equation and the Marshall–Qui...