Insoluble antigen and antibody derivatives were obtained when ethyl chloroformate was added to solutions of antigen or antibody. Evidence has been obtained to show that polymerization has occurred and that the protein molecules are linked covalently to one another. The immunoadsorbent properties of these insolubilized proteins were investigated. They were found to be efficient, specific, and st...

The Mark–Houwink–Sakurada (MHS) equation allows for estimation of rheological properties, if the molecular weight is known along with good understanding of the polymer conformation. The intrinsic viscosity of a polymer solution is related to the polymer molecular weight according to the MHS equation, where the value of the constants is related to the specific solvent and its concentration. Howe...

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

In the last note, we looked at the lattice model of small-molecule solutions. We now turn to polymers, using the same machinery. The lattice theory of polymer solutions is known as Flory-Huggins theory. In many ways, you will find this theory similar to the smallsolute case, except that the statistics are a little more complicated given that a polymer is a connected entity. Figure 1 shows a lat...

The Brownian motion of colloidal particles embedded in solutions of hydrogen-bonded supramolecular polymers has been studied using dynamic light scattering. At short times, the motion of the probe particles is diffusive with a diffusion coefficient equal to that in pure solvent. At intermediate time scales the particles are slowed down as a result of trapping in elastic cages formed by the poly...

Linear viscoelastic effects are examined in semidilute polymer solutions in macroscopic two-phase coexistence. If the temperature T or the pressure p is oscillated in time, the interface motion exhibits gel-like behavior at high frequencies and fluid-like behavior at low frequencies. We also study transient relaxation after a step-wise change of T or p. We

We revisit the rapid stretching of a liquid filament under the action of a constant imposed tensile force, a problem which was first considered by Matta & Tytus [JNNFM vol. 35, pp 215-229, 1990]. A liquid bridge formed from a viscous Newtonian fluid or from a dilute polymer solution is first established between two cylindrical disks. The upper disk is held fixed and may be connected to a force ...

We analyze the effective triplet interactions between the centers of star polymers in a good solvent. Using an analytical short-distance expansion inspired by scaling theory, we deduce that the triplet part of the three-star force is attractive but only 11% of the pairwise part even for a close approach of three star polymers. We have also performed extensive computer simulations for different ...

This paper discusses the effects of screened hydrodynamic interactions in

2014 We study the swelling of one very large molecule made of N monomers in a mixture of a good solvent and shorter polymers of P units of the same chemical species. All the macromolecules are branched. The total concentration is larger than the contact concentration C* of the short chains. When P decreases, the radius of gyration of the probe chain crosses-over from a N 1/3 behaviour typical o...