Acetylated starches with high degree of substitution were synthesized from cornstarch with acetic anhydride as esterifying agent and methanesulphonic acid as catalyst.

• 以玉米淀粉为原料,丁二酸酐为酯化剂,以水为媒介,氢氧化钠为催化剂对低取代度淀粉丁二酸酯的制备工艺进行了研究。