摘要
漂白前的氧脱木素可提高浆样白度，同时废水污染负荷下降。在实验室条件下，对思茅松氧脱木素硫酸盐浆采用Ｃ（Ｅ０）ＨＰ漂白程序，可漂至８５％（ＳＢＤ）的高白度。红外光谱表明，漂剂对发色基团（共轭和／或非共轭羰基）的破坏，是白度提高的主要原因。同时也表明，一些助色基团如羰基和／或酚型羟基被削弱，这对浆样白度的提高也十分有利。
The Pulp brightness was increased when oxygen delignification Per-formed before bleaching.In the meanwhile,the effluent pollution load was de creased.Using C(E0)HP bleaching seqtience,85%(SBD)high brightness lev-el of Simao pine cxygen delignmed kraft pulp was still obtained at experiniental conditions.Infra-red spectra showed,the main chromophore groups(conju-gated and/or non-conjugated carbonyl groups)were destroyed by bleaching,agent,which was the main reason ofbrightness increment.It was also found that some auxochrome groups,such as carboxyl and/or pheno-hydroxyl groups were weakened, which would be beneflcial to the increase of pulp brightness。
关键词
思茅松
氧脱木素
漂白
红外光谱
Simao pine,Oxygen delignification,Multiple bleaching, Infra-red Spectra
