摘要
从元素组成、功能基含量、结构单元三种基的比例和分子量及其分布等方面研究了苇浆残余木素的性质 ,并与芦苇木素进行了比较。研究发现 ,苇浆残余木素比起芦苇木素具有较高的氢含量和较低的氧含量 ;较低的甲氧基含量和较高的酚羟基和醇羟基含量 ;明显低的总醛含量、平均分子量及更高的多分散性。
The changes in chemical structure of residual lignin in reed kraft pulp were investigated by chemical analysis,element constitution and NMR spectroscopies.The results indicate that compared with reed lignin, residual lignin in reed kraft pulp had higher contents of oxygen and phenolic and alcoholic hydroxyl groups,lower contents of methoxyl group, residual carbohydrates and total aldehydes after alkaline nitrobenzene oxidation.Molecular weight of residual lignin was much lower in the residual lignin.
出处
《纤维素科学与技术》
CAS
CSCD
2000年第3期28-33,共6页
Journal of Cellulose Science and Technology
基金
国家自然科学基金
广东省科学基金及华南理工大学制浆造纸工程国家重点实验室基金资助项目
关键词
残余木素
芦苇硫酸盐浆
纸浆
造纸
制浆
reed kraft pulp residual lignin, element constitution,functional group content,molecular weight distribution,total aldehyde content
