摘要
分别以聚合氯化铝(PAC)、聚胺(PA)、聚二甲基二烯丙基氯化铵(PDADMAC)和高取代度阳离子淀粉(HCS)作为固定剂,研究了它们对废纸浆中微胶黏物的控制效果及对纸页性能的影响。研究结果表明,与其他几种固定剂相比,经HCS处理过的浆料的Zeta电位上升较快;在阳电荷加入量相同的情况下,HCS更有利于吸附浆料中的DCS物质,能使浆料液相的浊度、阳离子需求量、COD含量以及抄造后纸张白度下降得更多(纸张的不透明度上升得更快)。
The effect of controlling microstickies in recycled newspaper pulp and the effect on the resultant paper property of some fixatives, including inorganic polyaluninmn chloride （PAC）, organic polyamine （PA）, polydiallydimethyl ammonimn chloride （PDADMAC）, and high cationic starch （HCS）, were investigated in this paper. ζ potential of the pulps treated with HCS increased faster than that treated with others, it indicated that the HCS was easier to be absorbed onto fibers. It was found that the HCS could fix more DCS components onto cellulose fibers than the other fixatives when the same amount of cationic charges were added, resulting lower turbidity of the liquid phase of the pulp slurry, rapid decrease of cationic demand and chemical oxygen demand, and lower brightness （higher opacity） of hand sheets. The HCS functioned on DCS with a relafionship higher than the stoichiometry of 1 ： 1 between anionic and cationic charges, indicating that a part of the DCS was removed by a flocculation mechanism. Comparing with the inorganic PAC, the organic fixatives PA, PDADMAC and HCS can maintain better paper strength properties. Proper application of HCS can obtain higher microsfickies control effect while not influence paper formation and strength properties.
出处
《中国造纸》
CAS
北大核心
2006年第7期1-4,共4页
China Pulp & Paper
关键词
固定剂
微胶黏物
废纸浆
fixatives
microstickies
recycled newspaper pulp
