摘要
以玉米淀粉为原料,通过氧化、酸化、醚化等改性反应合成了氧化-酸化-醚化淀粉,并考察了工艺参数对其作为减水剂的分散性能的影响,得出了各合成阶段的关键工艺参数——时间、温度、pH值和原料用量的最佳控制值。改性淀粉最佳掺量为0.3%,是一种以空间位阻为主要减水机理的减水剂。
The oxidized-acidified-etherified starch was prepared by corn starch by via sequebtial process of sodium hypochlorite oxidation,acidolysis treatment and oxirane etherification.,and the influence of process parameter to water-reducing characteristic on the cement paste were investigated.The optimum control value of the critic parameter-time,temperature,pH and raw material amount of every stage were got.The optimal amount of oxidized-acidified-etherified starch is 0.3%,the main active mechanism of which is steric hindrance.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2011年第11期33-38,共6页
Journal of Wuhan University of Technology
基金
“十二五”国家科技支撑计划(2011BAA04B04)
西南科技大学国防重点学科实验室重点培育项目(07JGZB02)
关键词
玉米淀粉
氧化
酸化
醚化
corn starch
oxidation
acidolysis
etherification
