| abstract |
An object of the present invention is to provide a resin composition having increased heat resistance (high crystallinity) and transparency without impairing rigidity which a polylactic acid resin inherently has, a molded article composed of the resin composition and a novel polylactic acid compound used in the resin composition. A polylactic acid resin composition of the present invention contains a linear polylactic acid compound (A) having a moiety represented by the formula (1): —X 1 —R 1 —X 2 — and having a weight average molecular weight (Mw) of 5,000 to 500,000. In addition, in the formula (1), X 1 and X 2 each independently represent an oxygen atom, a sulfur atom or an NH group, R 1 represents a divalent group containing at least one aromatic group or aliphatic group, and the hydrocarbon group may contain an oxygen atom, a nitrogen atom or a sulfur atom. |