How do you calculate degree polymerization?

Divide the molecular weight of the polymer by the molecular weight of the monomer unit to calculate the degree of polymerization. If the molecular mass of tetrafluoroethylene is 120,000, its degree of polymerization is 120,000 / 100 = 1,200.

How do you define degree of polymerization?

The degree of polymerization (DP or Xn) is defined as the number of monomer units in the polymer. It is calculated as the ratio of molecular weight of a polymer and molecular weight of the repeat unit. Number average DP and weight average DP are the two main types used for measuring the DP.

What does PVC stand for Quizizz?

What does PVC stand for? nothing, it’s just PVC. Paul V Collins (the scientist who developed PVC) polyviscouscarbon.

How do you find the degree of polymerization of polystyrene?

Therefore, the average degree of polymerization by weight of a sample of PS with a molecular weight Mw = 5.4 106 g / mol, is: xw = 5.4 x 106 / 104 = 5.2 x 104.

What are degree of polymerization and functionality?

The degree of polymerization, or DP, is the number of monomeric units in a macromolecule or polymer or oligomer molecule. For most industrial purposes, degrees of polymerization in the thousands or tens of thousands are desired.

What is the symbol of degree of polymerization?

DP
The degree of polymerization, or DP, is the number of monomeric units in a macromolecule or polymer or oligomer molecule. , where Mn is the number-average molecular weight and M0 is the molecular weight of the monomer unit.

How do you determine the degree of polymerization of cellulose?

The degree of polymerization of cellulose is calculated from the intrinsic viscosity of solutions prepared by dissolving cellulose in a suitable solvent, such as CED or cadoxen.

What is the average degree of polymerization?

The number-average degree of polymerization is a weighted mean of the degrees of polymerization of polymer species, weighted by the mole fractions (or the number of molecules) of the species. It is typically determined by measurements of the osmotic pressure of the polymer.

How kinetic chain length is related to degree of polymerization?

Calculating chain length When the reaction goes to completion, [M] = 0, and then the kinetic chain length is equal to the number average degree of polymerization of the polymer. In both cases kinetic chain length is an average quantity, as not all polymer chains in a given reaction are identical in length.

What is isotactic and syndiotactic?

If all the methyl groups lie on the same side of the chain, the polymer is called isotactic. If the methyl groups alternate in a regular fashion from one side of the chain to the other, the polymer is syndiotactic.

How do you calculate the degree of polymerization?

The degree of polymerization can be calculated by using the following relationship if a molecular weight of a polymer molecule is known. M= (DP) M0 M is the molecular weight of the polymer, DP is the degree of polymerization and the M 0 is the formula weight of the repeating unit.

What is the difference between M0 and DP in polymerization?

M= (DP) M0 M is the molecular weight of the polymer, DP is the degree of polymerization and the M 0 is the formula weight of the repeating unit. Ex: calculate the degree of polymerization of a sample of polyethylene [ (CH2-CH2)n], which has a molecular weight of 150,000 g/mol.

What is the formula weight of the repeating unit of polymerization?

M= (DP) M 0. M is the molecular weight of the polymer, DP is the degree of polymerization and the M 0 is the formula weight of the repeating unit.

What does the Carothers equation tell us about polymerization?

Finally, we have a more general Carothers equation that is now applicable to polymerization with non-stoichiometric balance of reactive groups. And what does this equation tell us? If you want polymers of any significant length (high degree of polymerization) you need VERY HIGH extent of reaction AND to control r as close to 1 as possible!