Abstract: The invention relates to a composition comprising: at least one aliphatic polyester (A) comprising diols containing at least ethylene glycol, 1,4-butanediol or mixtures thereof and diacids containing at least succinic acid, adipic acid or mixtures thereof; at least one starch (B); at least one organic plasticiser (C) for starch; optionally, an additional polyester or a mixture of additional polyesters (D) different from polyester (A). The composition is characterised in that it also comprises citric acid (E), the amount by weight of citric acid varying between 0.01 and 0.45 parts per 100 parts of the total dry weight of (A), (B), (C) and (D).

Abstract: The invention relates to a thermoplastic composition comprising: at least one mixture of polyesters (A) including at least one polylactic acid (A1) and at least one aliphatic polyester (A2) or a semi-aliphatic polyester other than polymer (A1); at least one starch (B); at least one organic plasticiser (C) for starch. The composition is characterised in that: the weight percentage of (A1) in relation to the weight of (A1) and (A2), expressed as dry weight, varies between 2 and 70%, advantageously between 10 and 50%, preferably between 18 and 30%; at least 50% of the weight of the polylactic acid (A1) is formed by semi-crystalline polylactic acid; and in that the weight ratio of starch (B)/organic plasticiser (C), expressed as dry weight, varies between 90/10 and 40/60.

Abstract: The invention relates to a thermoplastic composition comprising at least one polyester (A) which is an aliphatic polyester; at least one starch (B); at least one organic plasticiser (C) for starch; and at lest one monoester compound (D) of fatty monoacid comprising at least 12 carbon atoms and glycerol. The composition is characterised in that the amount by weight of compound (D) varies between 0.05 and 1.7 parts per 100 parts of the dry weight of the different constituents (A), (B) and (C).

Abstract: The invention relates to a composition comprising: at least one aliphatic polyester (A) comprising diols containing at least ethylene glycol, 1,4-butanediol or mixtures thereof and diacids containing at least succinic acid, adipic acid or mixtures thereof; at least one starch (B); at least one organic plasticiser (C) for starch; optionally, an additional polyester or a mixture of additional polyesters (D) different from polyester (A). The composition is characterised in that it also comprises citric acid (E), the amount by weight of citric acid varying between 0.01 and 0.45 parts per 100 parts of the total dry weight of (A), (B), (C) and (D).