微波辐射作用下氰乙基化木材的制备

Preparation of Modified Wood by Cyanoethylation under Microwave Radiation

利用微波辐射对杉木进行氰乙基化改性，研究了各种反应条件对氰乙基化反应的影响。并用红外光谱对氰乙基化木材进行了初步表征。结果表明，2g杉木粉用KSCN饱和低浓度NaOH浸渍60min，丙烯腈17mL，温度在40～50℃下，微波辐射20～60min，（实际反应时间为80～120min），辐射功率用650W的30％，可获得与传统的恒温水浴反应240min同样增重50％～60％的氰乙基化木材，但前者可缩短50％的反应时间。

China fir was modified by cyanoethylation under microwave radiation. The cyanoethylated wood was characterized by IR, The same weight gain （50 % - 60 % ） could be obtained as that of conventional method, but the reaction time was shortened from the primary 240 min to 120 min. The reaction conditions are as follows： 2 g of China fir is soaked in saturated and low concentrated NaOH solution for 60 min, cyanoethylene 17 mL, temperature 40 - 50℃, radiation time 20 - 60 min （ the actual reaction time 80 - 120 min） and 30 % of 650 W microwave power.