Why do small polymer molecules elute later in GPC?

 Points on small polymer molecules in GPC:

• During Gel Permeation Chromatography (GPC) analysis, smaller polymer molecules experience longer retention times due to deeper penetration into the pore structure of the stationary phase.
• These molecules undergo repeated diffusion into and out of multiple pores as they migrate through the column.
• This extended diffusion pathway significantly increases residence time and delays the elution of low-molecular-weight polymer fractions.

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