摘要
研究了兰考泡桐（Ｐａｕｌｏｗｎｉａｅｌｏｎｇａｔａ）木片用４种酶液（纤维素酶液ＥＳ２８、半纤维素酶ＥＡｎ７６、木质素酶Ｅ０２５及Ｅ０１４）预处理制生物机械浆。测定了预处理对木片主要化学组成、磨浆能耗、纸浆强度的影响。结果表明：（１）Ｅ０１４、Ｅ０２５、ＥＳ２８、ＥＡｎ７６预处理后，木片失重３．１８％～３．７２％，其中３．９％～１８．６％为木质素损失，纤维素损失则高达３８．２％～４６．２％；（２）磨浆度为５５ＳＲ时，４种酶液可节省能耗２．０％～７．０％，裂断长变化为－１８．１％～７．９％，耐破度变化为－１３％～７．３％，撕裂度为－１２．９％～８．４％，光学性质（如白度、光散射系数）变化不大，不透明度几乎不变。综合能耗节省与强度性质的提高，Ｅ０１４及ＥＡｎ７６效果较好，ＥＳ２８则由于纤维素酶对纤维的损伤效果不佳，Ｅ０２５效果则一般。
A biomechanical pulping of Paulownia elongata wood chips pretreated with four types of enzymes(cellulase ES 28, semicellulase EAn76, ligninase E025 and E014) was described in this paper. The effects of the pretreatments on the chips chemical components, refining energy consumption and pulp strength were studied. The research results showed:(1) After enzyme pretretment, the chip weight loss was 3.18 %3.72 %, in which 3.9 %18.6 % was lignin loss and 38.2 %46.2 % was cellulose loss. (2)As the chips were treated with enzymes at 55SR beating degree, 2 %7 % refining energy can be saved, while the break, burst and tear indexes varied from -18.1 % to 7.9 %, -13 % to 7.3 % and -12.9 % to 8.4 %, respectively, but little change was presented in the optical properties such as brightness, light scattering coefficient and no change in opacity. As a whole, E014 and EAn76 exhibited better effects on energy savings and strength properties; E025 had no negative effect, but unsatisfactory results were obtained from ES
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
1999年第1期33-39,共7页
Chemistry and Industry of Forest Products
关键词
泡桐
生物机械浆
酶液
制浆
速生材
Paulownia elongata
Biomechanical pulp
Enzyme 28 treatment because the cellulase containing in ES 28 demaged the chip fibers.
