降解玉米淀粉的制备及其流变行为  

Preparation of Degraded Corn Starch and Its Rheological Behavior

作　　者：查晓川 杨宇萱 黄年华[1,2] 

机构地区：[1]武汉纺织大学先进纺纱织造及清洁化生产国家地方联合工程实验室 [2]湖北顶新环保生物质材料有限公司

出　　处：《纺织导报》2018年第12期29-30,32,共3页China Textile Leader

摘　　要：以玉米淀粉为原料,过硫酸铵为氧化剂、亚硫酸氢钠为还原剂、盐酸为酸解剂,对降解玉米淀粉的制备及性能进行了研究。考察了反应时间、反应温度、试剂用量对降解玉米淀粉流变行为的影响,采用3种不同方式对玉米淀粉进行降解,可以在较短时间内得到黏度较低的淀粉,并保留了淀粉的颗粒性状,具有较好的流变性能。在使用盐酸和过硫酸铵作为降解剂时,反应过程中,酸解和氧化同时进行,可以缩短反应时间,提高反应效率;使用过硫酸铵-亚硫酸氢钠氧化还原体系降解淀粉时,在低温下引发速率快,反应充分,效率较高;只用过硫酸铵降解淀粉的效果相对较差。The preparation and properties of degraded corn starch were studied by using corn starch as a raw material,ammonium persulfate as oxidant,sodium hydrogen sulfite as reducing agent and hydrochloric acid as an acidulate agent.The effects of reaction time,reaction temperature and reagent dosages on the rheological behavior of degraded corn starch were investigated.The degradation of corn starch was carried out in three different ways,and starch with lower viscosity could be obtained in a shorter time,which retained starch particle and had good rheological property.When hydrochloric acid and ammonium persulfate were used as the degrading agent,acid hydrolysis and oxidation were simultaneously performed during the reaction,which can shorten the reaction time and improve the reaction efficiency.When the ammonium persulfate sodium bisulfite redox system was used to degrade the starch,the initiation rate was fast at a low temperature with sufficient reaction and high efficiency.The effect of using ammonium persulfate only to degrade starch is relatively poor.

关 键 词：玉米淀粉 酸解 氧化 还原 流变行为 

分 类 号：TS105.2[轻工技术与工程—纺织工程]