How to decrease Melt Flow Index of recycled polypropylene ?

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Shuraik Kader

Dear Gandham satya srinivasa Rao

Using talc as filler material would decrease MFI.

Gandham satya srinivasa Rao

Thanks for your suggestion

Raul Villarroel

For such significative changes in MFI, the best is to use active rheology modificators. As an example, I'm attaching a table of MFI modification results for PP with different percentages of MAP rheology modification additive.