Polydispersity Index for Step-Reaction Polymers Calculator

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Spectrometric Characterization of Polymers

✖The Weight-Average Molecular Weight measuring system includes the mass of individual chains, which contributes to the overall molecular weight of the polymer.ⓘ Weight-Average Molecular Weight [M_w]			+10% -10%
✖The Number-Average Molecular Weight is a measuring system that requires counting the total number of molecules in a unit mass of polymer irrespective of their shape or size.ⓘ Number-Average Molecular Weight [M_n]			+10% -10%

✖Polydispersity Index is a measure of the distribution of molecular mass in a given polymer sample.ⓘ Polydispersity Index for Step-Reaction Polymers [PDI]

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Formula

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Polydispersity Index for Step-Reaction Polymers

Formula

`"PDI" = "M"_{"w"}/"M"_{"n"}`

Example

`"1.229782"="28.74g/mol"/"23.37g/mol"`

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Polydispersity Index for Step-Reaction Polymers Solution

STEP 0: Pre-Calculation Summary

Formula Used

Polydispersity Index = Weight-Average Molecular Weight/Number-Average Molecular Weight
PDI = M_w/M_n
This formula uses 3 Variables

Variables Used

Polydispersity Index - Polydispersity Index is a measure of the distribution of molecular mass in a given polymer sample.
Weight-Average Molecular Weight - (Measured in Kilogram Per Mole) - The Weight-Average Molecular Weight measuring system includes the mass of individual chains, which contributes to the overall molecular weight of the polymer.
Number-Average Molecular Weight - (Measured in Kilogram Per Mole) - The Number-Average Molecular Weight is a measuring system that requires counting the total number of molecules in a unit mass of polymer irrespective of their shape or size.

STEP 1: Convert Input(s) to Base Unit

Weight-Average Molecular Weight: 28.74 Gram Per Mole --> 0.02874 Kilogram Per Mole (Check conversion here)
Number-Average Molecular Weight: 23.37 Gram Per Mole --> 0.02337 Kilogram Per Mole (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

PDI = M_w/M_n --> 0.02874/0.02337

Evaluating ... ...

PDI = 1.22978177150193

STEP 3: Convert Result to Output's Unit

1.22978177150193 --> No Conversion Required

FINAL ANSWER

1.22978177150193 ≈ 1.229782 <-- Polydispersity Index

(Calculation completed in 00.004 seconds)

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< 15 Polymers Calculators

Sedimentation Coefficient given Dynamic Viscosity

Go Sedimentation Coefficient = Mass of Particle/(6*pi*Dynamic Viscosity*Radius of Spherical Particle)

Sedimentation Coefficient given Radius of Particle

Go Sedimentation Coefficient = Sedimentation Speed/((Radius of Spherical Particle)*(Angular Velocity)^2)

Viscosity Number

Go Viscosity Number = (Flow Time of Polymer Solution/(Flow Time of Solvent-1))/Polymer Concentration

Average Functionality Factor

Go Average Functional Factor = (Mole of each Reactant*Functionality)/Total Number of Moles

Rate of Polycondensation

Go Rate of Polycondensation = Rate Constant*(Diacid Concentration)^2*Diol Concentration

Number-Average Molecular Weight

Go Number-Average Molecular Weight = Molecular Weight of Repeating Unit/(1-Probability of Finding Repeating Unit AB)

Weight-Average Molecular Weight in General Step Reaction Polymerization

Go Weight-Average Molecular Weight = Number-Average Molecular Weight*(1+Probability of Finding Repeating Unit AB)

Number-Average Degree of Polymerization

Go Number-Average Degree of Polymerization = Number of Original Molecules/Number of Molecules at Specific Time

Activation Energy for Propagation

Go Activation Energy for Propagation = Heat of Polymerization+Activation Energy for Depolymerization

Compressive Strength of Material

Go Compressive Strength of Material = Force Applied on Material/Cross Sectional Area of Polymer

Polydispersity Index for Step-Reaction Polymers

Go Polydispersity Index = Weight-Average Molecular Weight/Number-Average Molecular Weight

Tensile Strength given Cross-Sectional Area

Go Tensile Strength = Force Applied on Material/Cross Sectional Area of Polymer

Sedimentation Coefficient of Particle

Go Sedimentation Coefficient = Sedimentation Speed/Applied Acceleration

Contour Length of Macromolecule

Go Contour Length = Number of Monomers*Length of Monomer Unit

Deborah Number

Go Deborah Number = Time of Relaxation/Observation Time

< 11 Important Formulas of Polymers Calculators

Viscosity Number

Go Viscosity Number = (Flow Time of Polymer Solution/(Flow Time of Solvent-1))/Polymer Concentration

Average Functionality Factor

Go Average Functional Factor = (Mole of each Reactant*Functionality)/Total Number of Moles

Rate of Polycondensation

Go Rate of Polycondensation = Rate Constant*(Diacid Concentration)^2*Diol Concentration

Number-Average Molecular Weight

Go Number-Average Molecular Weight = Molecular Weight of Repeating Unit/(1-Probability of Finding Repeating Unit AB)

Weight-Average Molecular Weight in General Step Reaction Polymerization

Go Weight-Average Molecular Weight = Number-Average Molecular Weight*(1+Probability of Finding Repeating Unit AB)

Number-Average Degree of Polymerization

Go Number-Average Degree of Polymerization = Number of Original Molecules/Number of Molecules at Specific Time

Compressive Strength of Material

Go Compressive Strength of Material = Force Applied on Material/Cross Sectional Area of Polymer

Polydispersity Index for Step-Reaction Polymers

Go Polydispersity Index = Weight-Average Molecular Weight/Number-Average Molecular Weight

Tensile Strength given Cross-Sectional Area

Go Tensile Strength = Force Applied on Material/Cross Sectional Area of Polymer

Sedimentation Coefficient of Particle

Go Sedimentation Coefficient = Sedimentation Speed/Applied Acceleration

Contour Length of Macromolecule

Go Contour Length = Number of Monomers*Length of Monomer Unit

Polydispersity Index for Step-Reaction Polymers Formula

Polydispersity Index = Weight-Average Molecular Weight/Number-Average Molecular Weight
PDI = M_w/M_n

What is Polymerization?

In polymer chemistry, polymerization is a process of reacting monomer molecules together in a chemical reaction to form polymer chains or three-dimensional networks. In chemical compounds, polymerization can occur via a variety of reaction mechanisms that vary in complexity due to the functional groups present in the reactants and their inherent steric effects.

How to Calculate Polydispersity Index for Step-Reaction Polymers?

Polydispersity Index for Step-Reaction Polymers calculator uses Polydispersity Index = Weight-Average Molecular Weight/Number-Average Molecular Weight to calculate the Polydispersity Index, The Polydispersity Index for Step-Reaction Polymers formula is defined as the ratio of weight to number-average molecular masses. PDI is used to indicate the distribution of polymer chain molecular weights in a given polymer. Polydispersity Index is denoted by PDI symbol.

How to calculate Polydispersity Index for Step-Reaction Polymers using this online calculator? To use this online calculator for Polydispersity Index for Step-Reaction Polymers, enter Weight-Average Molecular Weight (M_w) & Number-Average Molecular Weight (M_n) and hit the calculate button. Here is how the Polydispersity Index for Step-Reaction Polymers calculation can be explained with given input values -> 1.229782 = 0.02874/0.02337.

FAQ

What is Polydispersity Index for Step-Reaction Polymers?

The Polydispersity Index for Step-Reaction Polymers formula is defined as the ratio of weight to number-average molecular masses. PDI is used to indicate the distribution of polymer chain molecular weights in a given polymer and is represented as PDI = M_w/M_n or Polydispersity Index = Weight-Average Molecular Weight/Number-Average Molecular Weight. The Weight-Average Molecular Weight measuring system includes the mass of individual chains, which contributes to the overall molecular weight of the polymer & The Number-Average Molecular Weight is a measuring system that requires counting the total number of molecules in a unit mass of polymer irrespective of their shape or size.

How to calculate Polydispersity Index for Step-Reaction Polymers?

The Polydispersity Index for Step-Reaction Polymers formula is defined as the ratio of weight to number-average molecular masses. PDI is used to indicate the distribution of polymer chain molecular weights in a given polymer is calculated using Polydispersity Index = Weight-Average Molecular Weight/Number-Average Molecular Weight. To calculate Polydispersity Index for Step-Reaction Polymers, you need Weight-Average Molecular Weight (M_w) & Number-Average Molecular Weight (M_n). With our tool, you need to enter the respective value for Weight-Average Molecular Weight & Number-Average Molecular Weight and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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