Polymer Concentration
Polymer Concentration - Related Videos
02:34
Polymers
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2020
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the properties that they exhibit. Additionally,...
09:49
Solutions and Concentrations
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2023
Source: Laboratory of Dr. Michael Evans — Georgia Institute of Technology A solution is a homogeneous mixture containing some components in small amounts, called solutes, and one component in a large amount, called the solvent. Solid-liquid solutions contain one or more solid solutes dissolved in a liquid solvent. Solutions are ubiquitous in chemistry: they are used to store and handle small amounts of material, carry out chemical reactions, and develop materials with controllable properties.
08:44
Tension Tests of Polymers
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2023
Source: Roberto Leon, Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA Polymeric materials are widely used in civil structures, with uses ranging from very soft sealants to more rigid pipes in water and wastewater systems. The most basic definition of a polymer is a molecular structure with repeating subunits. The term polymer comes from Greek, where "poly" means many, and "-mer" means basic unit. Monomers, or single mers, are the specific repeating units. With...
13:57
Preparation and Friction Force Microscopy Measurements of Immiscible, Opposing Polymer Brushes
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Cited by 4 •
2014
The methodology to perform friction force microscopy experiments for contacting brushes is presented: Two polymer brushes that are grafted from (a) substrates and (b) colloidal probes are slid to show that, by using two contacting immiscible brush systems, friction in sliding contacts is reduced compared to miscible brush systems.
08:12
Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers
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2022
Here, we describe protocols for the preparation of trans-cyclobutane fused cyclooctenes (tCBCO), their polymerization to prepare depolymerizable olefinic polymers, and the depolymerization of these polymers under mild conditions. Additionally, protocols for the preparation of depolymerizable networks and compression molding of rigid linear plastics based on this system are described.
FAQs
Increasing Polymer Concentration places chains closer together, so they interact more frequently. These interactions can promote chain entanglement, in which polymer chains become physically interwoven, and may eventually contribute to gel formation in some systems. The resulting changes help explain why a formulation can shift from relatively easy flow to more structured behavior as its concentration is adjusted.
Concentration changes the frequency of chain interactions within a formulation. More frequent interactions can increase viscosity and alter how the material flows during engineering operations. This relationship creates a central processing tradeoff: a formulation must provide the desired material behavior while remaining sufficiently processable for its intended use, such as coating, adhesion, membrane formation, fiber production, or other polymer processing.
Changes in Polymer Concentration modify the molecular interactions that influence macroscopic performance. Depending on the engineered system, concentration can affect mechanical strength, transport properties, and the tendency toward gel formation. Engineers therefore treat concentration as a design variable rather than an isolated measurement, using it to connect formulation changes with the functional behavior required from a material.
Engineers should monitor the concentration value together with viscosity, flow behavior, and evidence of changes such as chain entanglement or gel formation. They also need to consider the intended balance between processability and final performance. Tracking these responses while concentration changes helps identify a formulation range that supports consistent production and the required behavior of the finished material.
Control begins by determining how much polymer is present relative to the solution, mixture, or composite's total volume or mass. Engineers then adjust that proportion and evaluate resulting behavior, including viscosity, flow, mechanical performance, and transport characteristics. This iterative approach supports formulation optimization for coatings, adhesives, membranes, fibers, hydrogels, and polymer processing systems.
Careful adjustment is relevant wherever polymer behavior determines processing or product performance. In coatings and adhesives, concentration contributes to formulation behavior; in membranes and fibers, it can influence transport or material formation; and in hydrogels and polymer processing formulations, it helps regulate structure and processability. Measuring and controlling the parameter also supports product consistency across engineered materials.