摘要
研究了Ｃｅ４＋离子（ＣＡＮ）引发的丙烯腈（ＡＮ）在芭蕉芋淀粉（ＳＴ）上的接枝共聚，对影响接枝效果的因素作了考察。结果表明芭蕉芋淀粉极适用丙烯腈接枝，生成聚丙烯腈与淀粉的接枝共聚物。获得良好接枝率和接枝效率的适宜条件为：ＡＮ／ＳＴ（重）＝１．５～１．９，〔ＣＡＮ〕＝１～１．５×ｌ０ˉ３ｍｏｌ／ｌ、反应温度Ｔ＝２５～３０℃、反应时间ｔ＝２．５～３ｈ以及反应前每克淀粉用６５～７０ｍｌ水湖化。反应产物用碱水解、干燥后，可得吸水能力大于８００ｍｌ／ｇ的吸水树脂。
Grafting of polyacrylonitrile (PAN) to Canna Edulis Ker starch(ST) initiated by ceric ion Ce4+ (CAN) was studied. The variables affecting degree of grafting and efficiency were examined. The results. showed that Canna Edulis Ker starch was quite suitable for grafting of PAN. To achieve the better grafting efficiency and degree of grafting the appropriate conditions were AN/ST(weight)=1.5～1. 9 ,(CAN)=1～1. 5 ×10ˉ3 mol/1.reaction temperature=25～30℃, reaction time=2. 5～3 hrs, and that the starch was gelatinized with 65～70 ml water per gram before the reaction. After the grafting, product was hydrolyzed with alkali and dried, the absorbent resin was obtained which had capacity of absorbing water over 800 ml per gram.
出处
《云南化工》
CAS
1995年第3期4-7,共4页
Yunnan Chemical Technology
关键词
芭蕉芋淀粉
聚丙烯腈
接枝共聚物
吸水树脂
Canna Edulis Ker starch
grafting copolymer
polyacrylonitrile
absorbent resin
