SEPARATIONS AND ANALYSIS OF PITCH COMPONENTS FROM THERMO MECHANICAL PULP TREATED WITH LIPASE
Thermo-mechanical pulp was treated with lipase and then the pitch extracted components were separated using DEAE-Sephadex ion-exchange method. Group functions were analyzed by infrared spectroscopy method. The test result indicates that acids and neutrals in pitch extracts could be separated effectively by ion-exchange means. The reaction of lipase was to break ester linkages in pitches. The ratio of neutrals deterioration in pitch after lipase treatment is about 60 wt％, and the deteriorations mostly are organic acids and alcohols.
thermo-mechanical pulp (TMP) pitch lipase ion exchange
Wang Songlin Zhang Li Hu Huiren
Qingdao University of Science and Technology,Qingdao, 266042, China Tianjin Key Lab of Pulp & Paper, Tianjin University of Science and Technology, Tianjin, 300457, Chin
国际会议
广州
英文
866-869
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）