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Free volume theory of polymers posits that the properties of polymer materials, including their mechanical and thermal behaviors, are significantly influenced by the presence of "free volume"—the unoccupied space within the polymer matrix. This free volume allows for molecular mobility, affecting processes like diffusion and relaxation. The theory suggests that as temperature increases, the free volume increases, leading to enhanced segmental mobility and changes in the physical properties of the polymer. Understanding free volume is crucial for predicting how polymers will perform in different applications and conditions.
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Is a diamond a polymer?
polymer
Why does adding more initiators result in shorter polymer chains?
Adding more initiators can result in shorter polymer chains because more initiators will generate more free radicals, which will initiate more polymerization reactions in the monomer solution. This leads to a higher number of growing polymer chains in the same volume, each receiving less monomer incorporation, thus resulting in shorter chains overall.
Is lipid a polymer?
A lipid is both a polymer and monomer. Polymer: Triglyceride Monomers: glycerol and fatty acids
Are phospholipids a polymer?
A phospholipid is not a polymer.
Is chocolate a polymer?
Chocolate is not a polymer.
What has the author C Ranganathaiah written?
C. Ranganathaiah has written: 'A new method of determining miscibility in binary polymer blends through hydrodynamic interaction: The free volume approach: The free volume approach'
How would you expect the intrinsic volume for a polymer in a particular solvent to vary with temperature?
generally, a polymer gets dissolved in a solvent (which implies lower density and higher volume). the higher the temperature, the quicker the process, so to answer: the intrinsic volume for a polymer in a particular solvent increases with the temperature.
What is the best way to learn to work with polymer clay for free?
The best way to learn to work with polymer clay for free is to watch instructional videos online. This will prepare you for working with the material without actually needing it in hand.
If you add water to a polymer what will happen?
When water is added to a polymer, it can cause the polymer chains to swell and increase in volume. This is because water molecules can interact with the polymer chains, promoting their separation and expansion. In some cases, this can lead to the polymer absorbing water and becoming softer or more flexible.
Free-electron theory of metals is used for?
write note on free electron theory
What is the shape of a polymer molecule in solution?
The shape a polymer molecule assumes in solution depends on the polymer-solvent combination, the polymer architecture, chemical groups along the backbone of the polymer chain, the polymer molecular weight, the temperature of the solution, the concentration/viscosity of the solution, the prescence of ions and if the solution is in a static or dynamic state e.g. under shear or in an electric field. This shape could be straight or random coil. The volume the shape assumes may be big or small (depending on the above mentioned parameters) and is more commonly referred to as the hydrodynamic volume. The hydrodynamic volume is used to study the molecular weight of polymers using a technique called size exclusion chromatography.
Why volume of toluene decrease after extraction?
It may trapped in your sample, if it's a polymer for example. Or it may reacted with a substance in the solution.
What is quantum free electron theory of metal?
Classical free electron theory could not explain many physical properties. In 1928, Sommerfeld developed a new theory applying quantum mechanical concepts and Fermi-Dirac statistics to the free electrons in the metal. This theory is called quantum free electron theory.
What is reductionist theory?
Reductionist theory: a person is free to do what is not positively prohibited by law.
Why para-formaldehyde doesn't give positive fehling's test?
Because it is a polymer of formaldehyde with no free aldehydic group.
Is a diamond a polymer?
polymer
What has the author Jennifer M Lehmann written?
Jennifer M. Lehmann has written: 'Globalization Between the Cold War and Neo-Imperialism, Volume 24 (Current Perspectives in Social Theory)' 'Current Perspectives in Social Theory' 'Social Theory as Politics in Knowledge, Volume 23 (Current Perspectives in Social Theory)'
