不同引发剂体系对纤维素与己内酰胺接枝共聚的影响  

The effects of different kinds of initiator systems on copolymerization of cellulose grafed with caprolactam

作　　者：王利君[1] 韩卿[1] 谢益民[2] 

机构地区：[1]陕西科技大学造纸工程学院,西安710021 [2]山东轻工业学院造纸科学与技术省级重点实验室,济南250353

出　　处：《中华纸业》2010年第8期46-49,共4页China Pulp & Paper Industry

摘　　要：研究了过硫酸钾-亚硫酸氢钠、硝酸铈铵-硝酸、高锰酸钾-硫酸、过氧化氢-硫酸亚铁、过氧化苯甲酰-丙酮五种接枝共聚改性常用引发体系对纸浆纤维和己内酰胺接枝共聚改性的影响。以接枝率为主要考察对象,在单体浓度、反应温度和反应时间相同的条件下,从五种引发体系中选择出一种效果较好的引发体系用于纸浆纤维和己内酰胺接枝共聚改性反应。研究结果表明:过硫酸钾-亚硫酸氢钠引发体系具有在低温下接枝反应良好、反应活化能低、反应物在短时间内即发生体积膨胀增大的现象,其引发接枝率高、速率快,成本低。The effects of commonly used initiator systems of grafting copolymerization on pulp fiber and caprolactam modification were studied in this paper. The systems were as follows： potassium persulphate-sodium bisulfite, cerium nitrate amine, potassium permanganate, hydrogen peroxide-ferrous sulfate and benzoyl peroxide. With the grafting ratio as the main parameter, the optimal initiator system was used in the grafting copolymerization of cellulose and caprolactam, which was picked under the same conditions including the same monomer concentration, the same temperature and the same reaction time. The results show that this kind of oxido-reduction system （K2S2O8-NaHSO3） can obtain a good grafting reaction at low temperature and low reaction activation energy. The reactant can appear the phenomenon of volume expansion in a short time. The initiator system is higher in graft ratio, rapid in speed and low in cost.

关 键 词：引发体系 己内酰胺 接枝共聚 改性 

分 类 号：TS71[轻工技术与工程—制浆造纸工程]