【摘要】 介绍了氧化醋酸酯淀粉的制备方法与表面施胶性能,重点探讨了醋酸乙烯酯的用量、pH值、反应时间和反应温度对氧化醋酸酯淀粉的取代度及反应效率的影响,并利用IR和SEM对氧化醋酸酯淀粉的结构进行了表征。结果表明,以水为反应介质,在醋酸乙烯酯用量8%、pH值9～10、反应温度30℃、反应时间60min时,可得到取代度为0.104的氧化醋酸酯淀粉。表面施胶实验发现,取代度为0.051～0.104的氧化醋酸酯淀粉表现出比氧化淀粉更好的表面施胶性能,同时还可改善纸张的物理性能指标。更多还原

【Abstract】 The manufacture of oxidized starch acetate with oxidized corn starch and ethylene ester of acetic acid was introduced. The influence of the reaction conditions on the degree of substitution of oxidized starch acetate was investigated. The optimum conditions were∶m (oxidized corn starch)∶m (ethylene ester of acetic acid)=100∶8, pH=9, reaction temperature 30℃, reaction time 1h. The degree of substitution of oxidized starch acetate was 0.104. The reaction efficiency was 69.33%. Characterization of oxidized starch acetate was analyzed with IR spectrum and SEM. Comparing the surface sizing results of oxidized starch and oxidized starch acetate, the result showed that oxidized starch acetate was a high effective surface sizing agent.更多还原