玉米秸皮AS-AQ浆全无氯漂白研究

TCF Bleaching of AS-AQ Pulp of Corn Stalk Cuticle

关键词:  玉米秸皮AS-AQ浆  漂白  TCF  H₂O₂强化氧漂

Key Words:corn stalk cuticle  AS-AQ pulp  TCF bleaching  strengthening oxygen bleaching by H₂O₂

摘要:对玉米秸皮的AS-AQ浆进行了全无氯漂白研究。结果表明，经过酸性DTPA预处理的AS-AQ浆，经H₂O₂强化氧漂，可使浆的白度达到77.4%。在Op漂白之后进行H₂O₂漂白，浆的白度可达81.4%；Op之后进行连二亚硫酸钠漂白，可使浆的白度达到80.6%。采用OpPY漂白程序，浆的白度可提高7.8个百分点，漂白效果好于OpYP漂白程序。

Abstract:This paper discussed the TCF bleaching for AS-AQ pulp of corn stalk cuticle. The results showed that the brightness of AS-AQ pulp after pretreatment of acid DTPA and Op stage reaches 77.4% ISO. The brightness of the pulp reaches 81.4% ISO after further bleaching with hydrogen peroxide bleaching.The brightness of the pulp from Op stage and further bleaching with sodium dithionite reaches 80.6% ISO. The brightness of the pulp can increase by 7.8 percentage points through the bleaching process of Op-P-Y, and its bleaching effect is better than the bleaching process of Op-Y-P.