What do you mean by polymer solution?
Polymer solutions are solutions containing dissolved polymers. The introduction into the polymer of small amounts of a solvent (plasticizer) reduces the temperature of glass transition, the yield temperature, and the viscosity of a melt.
How do you make polymer solution?
A process for the preparation of a polymer solution comprises the steps of: mixing a polymer with a solvent to swell the polymer in the solvent; cooling the swelled mixture; and then warming the cooled mixture to dissolve the polymer in the solvent.
What are solution properties of a polymer?
The main solution property which is of interest in polymer flooding applications is the viscosity of the polymer. Polymers are added to the injection brine in a waterflood in order to increase the viscosity of the drive fluid, which in turn improves the oil-water mobility ratio.
What is Semidilute polymer solutions?
Semidilute Polymer Solutions. Since , the overlap of the coils occurs already at a very low polymer concentration. Therefore, there is a wide concentration region where (i) coils are overlapping and strongly entangled; and (ii) . Such solutions are called semidilute.
How many types of solution are there?
So, based on the amount of solute present, solutions are classified into three types: unsaturated solutions and saturated solutions. Unsaturated solution: A solution in which more quantity of solute can be dissolved without raising its temperature, is called an unsaturated solution.
What is polymer viscosity?
The measurement of the viscosity of polymer solutions in organic solvents gives us a value that is directly related to the molecular mass of the polymer. In other words, the higher the viscosity, the higher the molecular weight, although the correlation is not direct.
What is thermodynamic polymer solution?
It is based upon the quasilattice theory of solutions [3], and leads to an equation for the free energy of mixing polymeric solute with monomeric solvent which contains a combinatorial entropy of mixing term and a regular solution theory enthalpy of mixing term.
What is overlap concentration?
walks. As concentration is raised, the conformations of individual chains start to overlap each. other at the overlap concentration, defined as the point where the concentration within a. given dilute conformation’s pervaded volume is equal to the solution concentration.
How are polymers used?
Uses of polymers Polymers are used in almost every area of modern living. Grocery bags, soda and water bottles, textile fibers, phones, computers, food packaging, auto parts, and toys all contain polymers. Even more-sophisticated technology uses polymers.
How is a polymer made?
A polymer is a large molecule made up of smaller, joined-together molecules called monomers. Monomers join together to make polymer chains by forming covalent bonds—that is, by sharing electrons. Other bonds then hold the groups of chains together to form a polymer material.