CONTROLLING DARKENING REACTIONS DURING MECHANICAL PULPING WITH ADDITIVES - A POSSIBLE APPROACH TO IMPROVING BRIGHTNESS AND BLEACHABILITY

编号 zgly0000334263

文献类型 期刊论文

文献题名 CONTROLLING DARKENING REACTIONS DURING MECHANICAL PULPING WITH ADDITIVES - A POSSIBLE APPROACH TO IMPROVING BRIGHTNESS AND BLEACHABILITY

学科分类 220.5570;林产化学加工学

作者 GeorgeX.Pan  GordonJ.Leary  EricY.Zhang  EricC.Xu 

作者单位 AlbertaResearchCouncil 

母体文献 天津科技大学学报 

年卷期 2004,19(A01)

页码 12-16

年份 2004 

分类号 TS74 

关键词 机械制浆  漂白率  亮度  暗色反应  辐射机理  木质素  浸渍化学 

文摘内容 The first part of this paper summarizes relevant literature information, which rationalizes our selection of chemicals. The second part reports some preliminary screening results. We have investigated a wide range of reagents, chosen for their different chemistries and divided into seven classes: (1) reducing agents, (2) reduced sulfur compounds, (3) hydrogen donors, (4) antioxidants and radical scavengers, (5) nucleophiles, (6) chelating agents, and (7) oxidizing bleaching agents. It is noted that some chemical reagents fall into more than one class. The obtained results will be discussed with respect to the effectiveness of each class。