This invention relates to thermoplastic and/or elastomer blend compositions having a viscosity at 200.degree. C., at 0.73 sec.sup.-1 of about 5000 to about 5.times.10.sup.6 poises, wherein the compositions used for elastomeric articles which include a polymer complex of a neutralized sulfonated polymer and a polymer containing basic nitrogen atoms can also include about 25 to about 150 parts by weight of a nonpolar process oil per 100 parts of the polymer complex and about 50 to 300 parts by weight of a filler per 100 parts of the polymer complex. These blend compositions can be processed on conventional plastic fabrication equipment into polymeric articles having excellent physical properties.