Resin composition and resin molded article

A resin composition comprising:

• cellulose acrylate (A), wherein the degree of substitution of the cellulose acrylate (A) is 2.1 to 2.9;
• at least a polymer (B) selected from the group consisting of:
• a polymer (b1) having a core-shell structure including:
• a core layer containing a butadiene polymer, and
• a shell layer located on a surface of the core layer and containing a polymer selected from a styrene polymer and an acrylonitrile-styrene polymer;
• a styrene-ethylene-butadiene-styrene copolymer (b2);
• polyurethane (b3);
• and
• aromatic polyester (b4);
• and
• a plasticizer (C), wherein the plasticizer is at least one selected from a group consisting of a cardanol compound, dicarboxylic acid diester, citrate, a polyether compound having one or more unsaturated bonds, a polyether ester compound, glycol benzoate, a compound represented by the following General Formulae (6) and epoxidized fatty acid ester:
• wherein, in the General Formula (6),
• R61 represents an aliphatic hydrocarbon group having 7 to 28 carbon atoms, and
• R62 represents an aliphatic hydrocarbon group having 1 to 8 carbon atoms;
• wherein the cellulose acrylate (A) is at least one selected from a group consisting of cellulose acetate, cellulose acetate propionate, and cellulose acetate butyrate;
• wherein the polymer (B) is present in an amount in a mass ratio of (B):(A) in the range of 0.05 to 0.2;
• wherein the plasticizer (C) is present in an amount in a mass ratio of (C):(A) in the range of 0.03 to 0.2;
• wherein a resin molded article obtained by molding the resin composition has a heat distortion temperature according to at least one of the following (1) and/or (2):
• (1) a heat distortion temperature of 95° C. or less measured in accordance with ASTM D648-07 B;
• and/or
• (2) a heat distortion temperature of 80° C. or less measured in accordance with ISO 75-2 A (2013);
• wherein the resin composition comprises polyhydroxyalkanoate (PHA) in an amount in a mass ratio of PHA:(A) in the range of 0:1 to 0.15:1.