林产化学与工业2012，Vol.32Issue(4)：107-112,6.
二次纤维的微波强化碱预处理及其氰乙基化改性研究
Microwave-assisted Alkali Pretreatment and Cyanoethylation of Secondary Fiber
摘要
Abstract
Microwave was applied to enhance alkali pretreatment and its impact on cyanoethyl modification of secondary fiber (SF) was studied in this paper. The structures, properties and thermoplastic mechanism of cyanoethylated SF (CSF) were also investigated. The results indicated that the microwave radiation power e. g. , 200,400 and 600 W, could improve the reaction degree of CSF and reduce the reaction time of cyanoethylation. The continuous microwave radiation was more effective than batch one. Decrystallization of cellulose was observed as SF was cyanoethylated. The crystallinity degree of CSF decreased with the increasing reaction degree of cyanoethylation, but meanwhile, the interplanar distance of CSF increased. CSF was thermoplastic and thermo-compressed substrate. The CSF with higher degree of cyanoethylation showed better mechanical and thermoplastic properties. The thermoplastic property of CSF should be attributed to the introduction of -CH2CH2 CN groups onto cellulose, which destroyed the structure of cellulose crystalline, and promoted the movement of cellulose macromolecule and/or chain segment.关键词
二次纤维/微波强化碱预处理/氰乙基化/热塑性Key words
secondary fiber/microwave-assisted alkali pretreatment/cyanoethylation/thermoplasticization分类
化学化工引用本文复制引用
张春红,孙可伟,陈秋玲,孙珮石..二次纤维的微波强化碱预处理及其氰乙基化改性研究[J].林产化学与工业,2012,32(4):107-112,6.基金项目
云南省应用基础研究计划项目(2011FB015) （2011FB015）
云南省教育厅科学研究基金(2010Y243) （2010Y243）
云南省国际河流与跨境生态安全重点实验室主任基金(无编号) （无编号）
