EFFECTS OF HEMICELLULOSES PRE-EXTRACTION ON THE PROPERTIES OF ASPEN CHEMI-THERMOMECHANICAL PULP AND BLEACHED PULP

被引：0
|
作者：
Liu, Wei [1 ]
Hou, Qingxi [1 ]
Mao, Changbin
Yuan, Zhirun
Li, Kecheng
机构：
[1] Tianjin Univ Sci & Technol, Tianjin Key Lab Pulp & Paper, Tianjin 300457, Peoples R China
来源：
PROCEEDING OF THE 4TH INTERNATIONAL CONFERENCE ON PULPING, PAPERMAKING AND BIOTECHNOLOGY (ICPPB '12), VOLS. I AND II | 2012年
关键词：
hemicelluloses; pre-extraction; aspen; chemi-thermalmechanical pulp; pulp properties; HOT-WATER EXTRACTION; RENEWABLE SOURCES;
D O I：
暂无
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
Pre-extraction of hemicelluloses prior to pulping and conversion of the extracted hemicelluloses to other by-products will provide additional revenues to the traditional pulp and paper industry. The effects of hemicelluloses pre-extraction with dilute sulfuric acid on the properties of aspen chemi-thermomechanical pulp (CTMP) were investigated. The acid pre-extraction significantly reduced refining energy consumption to a given freeness. However, at the same freeness, the acid pre-extraction resulted in the reduction of bulk and tensile index, fewer long fibers and more fines, but increase of Scott bond. Alkaline peroxide bleaching can compensate the strength loss, but the brightness of pulps with acid pre-extraction was still lower than that of the control.
引用
收藏
页码：1196 / 1200
页数：5
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