MCQ
The abbreviation $\text{PDI}$ refers to $.........$
  • A
    Name of the polymer
  • Polydispersity index of the polymer
  • C
    Application of the polymer
  • D
    Polydiagonal index

Answer

Correct option: B.
Polydispersity index of the polymer
The polydispersity index $\text{(PDI)}$ is a measure of the distribution of molecular mass in a given polymer sample.
The $\text{PDI}$ calculated is the weight average molecular weight divided by the number average molecular weight.
It indicates the distribution of individual molecular masses in a batch of polymers.
The $\text{PDI}$ has a value equal to or greater than $1,$ but as the polymer chains approach uniform chain length, the $\text{PDI}$ approaches unity.

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