Cellulose ester and polymeric aliphatic polyester compositions and articles

A cellulose ester composition comprising at least one cellulose ester in an amount from 65 to 95 wt %, at least one polymeric aliphatic polyester (PAP) in an amount from 2 to 15 wt %, at least one core-shell impact modifier in an amount from 2 to 15 wt % and optionally at least one monomeric plasticizer in an amount from 0 to 10 wt %, where wt % is based on the weight of the cellulose ester composition, wherein said at least one cellulose ester is chosen from cellulose propionate (CP), cellulose butyrate (CB), cellulose acetate propionate (CAP), cellulose acetate butyrate (CAB), cellulose propionate butyrate (CPB), cellulose tripropionate (CTP), or cellulose tributyrate (CTB);

• wherein the PAP is poly(butylene succinate) (PBS) or a copolymer of poly(butylene succinate) and poly(butylene adipate) (PBSA);
• wherein said cellulose ester composition has a Tg of at least 120° C. and a notched Izod impact strength of at least 80 J/m, measured according to ASTM Method D256 at 23° C. using a 3.2 mm bar, after conditioning the bar at 23° C. and 50% RH for 48 hours.