摘要
在微波辐射作用下利用KSCN饱和的低浓度NaOH水溶液作预润胀剂和催化剂,以丙烯腈作醚化剂对杉木进行氰乙基化改性.研究了丙烯腈用量,反应温度和反应时间,NaOH浓度等对氰乙基化反应的影响.发现采用微波辐射20min(实际反应时间为80min)可获得与传统的恒温水浴反应240min同样增重效果的氰乙基化木材,但前者可缩短反应时间.
The china fir meal is modified by cyanoethylation by using low concentration aqueous NaOH solution saturated by KSCN as preswelling agent and catalyst and acrylonitrile as etherification agent under microwave radiation.The influences of acrylonitrile to wood ratio,reaction temperature and time,NaOH concentration on cyanoethylation are studied under microwave radiation.It is found that the cyanoethylated wood with same thermoplasticity could be obtained by using 20-minuter microwave reaction and 4-hours' constant temperature bath,but long time is saved by the former.
出处
《赣南师范学院学报》
2003年第6期32-34,共3页
Journal of Gannan Teachers' College(Social Science(2))
基金
江西省教委科技发展基金项目.
关键词
木材
氰乙基化
化学改性
微波辐射
wood
Cyanoethylation
Chemical modification
Microwave radiation
