Infinite-Dilution Viscoelastic Properties of Polystyrene in θ-Solvents and Good Solvents

Recycling of Expanded Polystyrene Using Natural Solvents

Scaling theory of star polymers and general polymer networks in bulk and semi - infinite good solvents

2014 A scaling theory of general polymer networks in bulk and semi-infinite good solvents is derived by using the equivalence between the generating function for the total number of configurations and the multispin correlation function of the classical n-component Heisenberg model in the limit n ~ 0. For general polymer networks with fixed topology G composed of f linear chains with the same le...

Gel-like modes. of polymer solutions in ” θ ” solvents

2014 A polymer solution forms a transient network of lifetime Tr. In good solvents, the mesh size l is identical to the correlation length 03BE for the fluctuations of the monomer concentration c. But in « 03B8 » solvents (where the pair interaction vanishes), / is much smaller than 03BE. The dynamics involve then two quantitatively very different elastic moduli E : :1) at low frequencies, E = ...

Chemiluminescence Properties of Peroxyoxalate System in Organic Solvents

Peroxyoxalate system includes an oxalate ester, peroxide and a fluorescer, The energy resulted from the reaction of oxalate ester and peroxide is transferred to fluorescer and cause it to fluorsc. The effect of reactants chemical structure, their concentration, solvent media (polarity and viscosity) and the temperature, on the intensity of the illuminated light with respect to time have bee...

Some Properties of Membranes in Nematic Solvents

The fluctuation spectrum of membranes in nematic solvents is altered by the boundary condition imposed on the bulk nematic director by the curved membrane. We discuss some properties of single and multi-membrane systems in nematic solvents, primarily based on the Berreman-de Genne8 model. We show that: membranes in nematic solvents are more rigid and less rough than in their isotropic counterpa...