摘要
以漂白硫酸盐竹浆为原料,结合PFI磨的前期磨浆预处理和高压均质机的后期高压均质化处理制备微纤化纤维素(MFC),探讨了由2,2,6,6-四甲基哌啶氧化物自由基(TEMPO)、NaClO和NaBr组成的氧化体系的主要工艺参数(TEMPO、NaBr及NaOH用量)对竹浆MFC主要性能(如相对保水值)的影响,确定了最佳的化学预处理工艺。基于氧化后浆料的黏度与最终所得MFC的相对保水值之间的关系以及在优化氧化条件下NaOH用量与氧化后浆料黏度的关系,建立了预测MFC相对保水值的数学方程。
MFC can be obtained from bleached KP bamboo pulp using a procedure containing PFI mill pretreatment and high pressure homogenization. A chemical oxidation system is consisted of TEMPO, NaCIO and NaBr, the effects of chemical oxidation pretreatment parameters such as the dosages of TEMPO, NaBr and NaOH on the main property such as relative water retention value （WRV） of bamboo MFC were investigated, and the optimal chemical pretreatment process was also defined. A mathematic equation for predicting the relative WRV of MFC, which is based on the relation between the viscosity of the oxidized pulp and the relative WRV of MFC, the relation between the viscosity of the oxidized pulp and the dosage of NaOH in the optimized oxidation condition, was established.
出处
《中国造纸学报》
CAS
CSCD
北大核心
2009年第3期24-27,共4页
Transactions of China Pulp and Paper
基金
广西自然科学基金项目(桂科自0640007)
创新团队研究计划(IRT0552)
863计划(2007AA05Z408)
国家科技支撑计划(2007BAD34B01)
国家自然科学基金(50776035
U0733001)
教育部博士点基金(20070561038)
关键词
MFC
化学氧化
TEMPO
竹浆
microfibrillated cellulose
chemistry oxidation
TEMPO
bamboo
