桉木化学-热磨机械浆纤维的生物改性研究  

Study on bio-modification of eucalyptus chemi-thermomechanical pulp

作　　者：杨崎峰[1] 詹怀宇[1] 王双飞[2] 李可成 付时雨[1] 

机构地区：[1]华南理工大学制浆造纸国家重点实验室,广东广州510640 [2]广西大学造纸科学研究所,广西南宁530004 [3]Limerick Pulp and Paper Centre,University of New Brunswick,Canada

出　　处：《现代化工》2007年第1期32-35,37,共5页Modern Chemical Industry

摘　　要：采用白腐菌19-6对桉木化学-热磨机械浆(CTMP浆)进行了静置培养改性研究,探讨了附加营养物、pH、温度、培养时间和通氧方式等因素对处理效果的影响。结果表明,经白腐菌处理后的浆料二次磨浆能耗低于CTMP原浆,纸页的物理强度明显提高,在游离度约为330 mL时,抗张指数提高21.3%,撕裂指数提高27.4%,内结合强度提高33.1%。同时白腐菌处理使纸浆白度和光散射系数分别下降了25%和21%,而不透明度基本没有变化,通过Na2S2O4+H2O2两段漂后可以使白度达到70.3%ISO,接近相同漂白工艺下CTMP原浆的白度。Eucalyptus chemi-thermomechanical pulp was modified with the white-rot fungus 19-6 in a stationary cultural condition. Various factors which influence the effect of white-rot fungus treatment, including additional nutrition, pH value, temperature, treated time and oxygen input were investigated. The results showed that the energy consumption of secondary tefining of CTMP treated by the white-rot fungus 19-6 was lower than the untreated pulp and the strength properties also obviously improved.At a freeness level of about 330 mL, comparing to the untreated pulp, the tensile index, tear index and internal bonding increased by 21.3%, 27.4% and 33.1%, respectively. Unfortunately, the treatments with white-rot fungus substantially deerereased all optical properties, except for opacity, which was essentially unchanged. Brightness and scattering coefficient were reduced to as much as 25% and 21% of the values for the untreated pulp. However, attar a two-stage of ＂Na2S2O4 ＋ H2O2＂ bleaching sequence, the final brightness cart reach a 70.3 % ISO, which was similar to the untreated CTMP.

关 键 词：桉木CTMP浆 白腐菌19-6 生物改性 

分 类 号：TS74[轻工技术与工程—制浆造纸工程]