【作者】 邙志国； 薛冬桦； 迟惠； 徐昆； 张文德； 王丕新；

【Author】 MANG Zhi-Guo1, XUE Dong-Hua1, CHI Hui1, XUN Kun2, ZHANG Wen-De2, WANG Pi-Xin2* (1. Changchun Uiversity of Technology, 130012, Changchun) (2. Changchun Institute of Applied Chemistry, 130022, Changchun)

【机构】 长春工业大学； 中国科学院长春应用化学研究所；

【Abstract】 Corn Acetylated Starch was synthesized from corn starch, using methyl sulfonic acid as an esterification catalyst. The degree of substitute was 2.83. The structure of polymer was characterized by FTIR, 1H-NMR and X-ray diffraction. FTIR spectroscopy showed characteristic absorption of the esters in 1754cm-1、1435cm-1、1375cm-1、1240cm-1. FTIR and 1H-NMR both confirmed that the product was high degree of substitution. The results of X-ray diffraction showed that the crystal structure of the pure starch was destroyed during the esterification and formed more disordered structure.更多还原