摘要
采用NaOH作预润胀剂和催化剂，通过氰乙基化反应对杉木进行化学改性使其转化成热塑性材料。研究了碱浓度、丙烯腈用量、反应温度和时间对氰乙基化反应的影响。利用，X-ray，DSC，SEM等对氰乙基化木的微观结构和热塑性进行了研究和表征。结果表明，增重率在35％以上，含氮量在85％～9．7％的氰乙基化木可在160℃单独或与PS，PVC，ABS等合成高聚物共混热压成型为均匀半透明的薄片。
Cyanoethylation was attemped to convert fir wood into thermoplastic material utilizing NaOH as preswelling agent and catalyst. Cyanoethylation reaction was conducted with control of the alkali concentration, wood-to -acrylonitrile ratio, reaction temperafure and time. FTIR,X-ray, DSC and SEM were used to characterize the chemical structure and thermoplasticity of cyanoethylated Wood. It was found that the cyanoethylated wood with weight gain more than 35% and N content from 8. 5% -9. 7% could be molded into semitransparant and homogeneous films or sheets by hot press itself or blend with PS, PVC, ABS synthesized polymer at 160℃.
出处
《纤维素科学与技术》
CAS
CSCD
1994年第1期47-54,共8页
Journal of Cellulose Science and Technology
基金
国家自然科学基金
关键词
木材
氰乙基化
热塑性
wood, cyanoethylation, thermoplasticity
