摘要
以木质素、二乙醇胺及甲醛为原料,通过Mannich反应合成木质素胺基多元醇,研究了反应温度、时间、pH值及物料配比等因素对产物羟值的影响。实验结果表明,反应物料按质量比m（二乙醇胺）∶m（木质素）为0.35∶1、物质的量比n（甲醛）∶n（二乙醇胺）为1.1∶1时,在反应体系pH值为11条件下,80℃反应2.5-3 h,产物的羟值最高,为279 mg/g。通过FT-IR及元素分析方法表征了木质素胺基多元醇的化学结构。
Lignin aminated polyol was prepared from lignin,diethanolamine and formaldehyde by the Mannich reaction.The effects of reaction temperature,reaction time,pH value,the dosage of diethanolamine and formaldehyde on the hydroxyl value of the product were investigated.It was shown from the results that at the mass ratio of diethanolamine to lignin 0.35∶1,the molar ratio of formaldehyde to diethanolamine 1.1∶1,reaction tempreture 80 ℃ and pH value 11,the hydroxyl value 279 mg/g of the product is the highest.The chemical structure of lignin aminated polyol was characterized by FT-IR and elemental analysis methods.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
2010年第3期93-96,共4页
Chemistry and Industry of Forest Products
基金
国家林业局948技术引进项目(2008-4-77)
国家林业局948创新重点项目(2006-4-C03)
国家863计划资助(2007AA10074)
