摘要
The potassium pHospHate were used as esterifying agent and carbamide was used as a catalyzer in preparation of starch pHospHate with high degree of substitution.The production technique was confirmed by the investigation of dosage of esterifying agent and catalyzer,temprture,time and pH of reaction.In details: 100g corn starch +8gKH2PO4+10-12g carbamide,pH=6.5-7,140℃,4.5-5h.A kind of water-soluble starch pHospHates with 0.09 of DS and 1000 mpa.s of viscosity,which contained N,P,K elements 2.1%,3.7%,4.3%respectively,was prepared.A promising starch pHospHates was to be used in the field of agroforestry.
The potassium pHospHate were used as esterifying agent and carbamide was used as a catalyzer in preparation of starch pHospHate with high degree of substitution. The production technique was confirmed by the investigation of dosage of esterifying agent and catalyzer, temprture, time and pH of reaction . In details： 100g corn starch ＋8gKH2PO4 ＋ 10 - 12g carbamide,pH =6.5 -7, 140℃, 4.5 - 5h. A kind of water - soluble starch pHospHates with 0.09 of DS and 1000 mpa. s of viscosity, which contained N, P, K elements 2.1% ,3.7% ,4.3% respectively ,was prepared. A promising starch pHospHates was to be used in the field of agroforestry.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2009年第3期413-415,共3页
Chemical Research and Application
基金
山西省科技攻关项目,编号:2007031001
山西省科学技术厅资助
关键词
农用磷酸酯淀粉
水溶性
高取代度
生产工艺
starch pHospHates
water- soluble
degree of substitution
production technique
