绝缘浆酶促打浆研究

Study on Enzymatic Beating of Insulating Pulp

关键词:  未漂硫酸盐针叶木绝缘浆  混合酶  预处理  酶促打浆

Key Words:unbleached insulated pulp  mixed enzyme  pretreatment  enzymatic beating

摘要:将半纤维素酶（HC酶）与纤维素酶（U酶）按1∶1混合，研究了混合酶预处理对未漂硫酸盐针叶木绝缘浆打浆的影响。结果表明，在打浆度45~85°SR区间内，酶预处理打浆比未加酶打浆在提高浆料强度和节省打浆时间方面效果更明显；打浆度大于90°SR以上，酶预处理浆料和未加酶浆料的打浆度上升都非常缓慢；打浆度达95°SR时，较高温（35℃）酶预处理的打浆对浆料纤维降解剧烈，浆料的强度较差，而低温（12℃）酶预处理和未加酶打浆的浆料强度性能更好。

Abstract:The enzyme consisting different proportion of hemicellulase and cellulase was used to study the effect of enzymatic beating of the unbleached insulating softwood kraft pulp. The effects of dosage of enzyme and pretreatment temperature on enzymatic beating were studied. The results indicated that enzymatic pretreatment had remarkable effects on the improvement of paper strength and saving of beating time when beating degree was in the range of 45~85°SR. When beating degree was over 90°SR, the beating degree increased very slowly for both control pulp and enzymatic pretreated pulp. Enzymatic pretreated pulp in higher temperature caused serious degradation of the fibers which lead to poorer paper strength when beating degree was 95°SR compared to the enzymatic pretreated pulp in lower temperature and the control pulp.