【摘要】 为提高魔芋葡甘聚糖性能 ,扩大其应用范围 ,用氯乙酸、氯乙醇与魔芋葡甘聚糖进行醚化反应 ,红外光谱测得产物的结构表征 ,并对产物的醚化度、粘度、稳定性、存放时间等性能进行研究。结果表明 ,氯乙酸醚化产物 (DAS-0 3 )的醚化度为 0 .60～ 0 .75 ,1 %水溶液 ( 2 0℃ )粘度 1 5 0 0～ 1 5 0mPa.s;氯乙醇醚化产物 (DAS -0 5 )的醚化度为 0 .5 0～ 0 .62 ,1 %水溶液 ( 2 0℃ )粘度 1 0 0 0～ 640mPa.s。产物中分别存在羧甲基、羟乙基醚 ,产物粘度降低 ,化学稳定性提高 ,能较长时间存放。更多还原

【Abstract】 This paper deals with etherized products from the raw materials of chloroacetic acid chlorethanol and Konjac glucomannan(KGM) to improve their properties and extend their applications. The characterization of resultants was identified by FTIR spectroscopy. The properties of the products were studied, such as their etherealization degrees, viscosity and depositing-hours. The results showed that the etherealization degree of DAS-03 was 0.60～0.75 and viscosity in 1% solution (20℃) was 1500～150 mPa.s; the etherealization degree of DAS-05 was 0.50～0.62 and viscosity in 1% solution (20℃) was 1 000～640 mPa.s. Carboxymethyl, hydroxyethyl ether existed in the products. Viscosity was degraded after being modified. The products could be deposited for a long time, for their chemical stability was enhanced.更多还原