Described herein is a melt-processible polymer composition comprising: a non-fluorinated melt-processible polymer; and a fluorine-containing polymer comprising an end-group having a structures from group consisting of: and combinations thereof; wherein X1, X2, and X3 are each independently selected from H, F, Cl, a C1 to C4 alkyl group, and a C1 to C4 fluorinated alkyl group; R7 is a linking group comprising at least 2 or more catenary atoms; and Z1 and Z2 are independently selected from F, CF3, and a perfluoroalkyl group.