酶处理对沙柳P-RC APMP性能的影响

Effect of Enzyme Pretreatment on the Properties of Salix Psammophila P-RC APMP

研究了沙柳P-RC APMP进行酶处理后浆料性能的变化。结果表明,与空白样相比,聚木糖酶处理、漆酶/介体处理和漆酶/聚木糖酶处理对浆料光学性能的影响各不相同,浆料裂断长分别降低了9.5%、0.8%和6.7%,耐破指数分别降低了11.0%、4.1%和13.8%,撕裂指数分别提高了8.3%、8.0%和1.3%;扫描电镜观察发现,聚木糖酶处理后浆料纤维表面细纤维化程度变大,漆酶/介体处理后浆料纤维表面比较光滑,并出现部分表皮大块脱落的现象,与前述纤维相比,漆酶/聚木糖酶处理后的纤维分丝帚化程度最高;X射线衍射分析发现,酶处理后浆料纤维素的结晶度均下降,分别降低了6.0%、5.9%和2.4%。

The effect of enzyme pretreatment on the properties of Salix Psammophila P-RC APMP was studied. The effects on optical properties of the pulp from pretreated Salix Psammophila by xylanase, laccase medium and laccase/xylanase were all different, the breaking length of the pulp reduced by 9.5%, 0.8% and 6.7%, and the bursting index reduced by 11.0%, 4.1% and 13.8%, the tearing index im- proved by 8.3% , 8.0% and 1.3% respectively compared with the pulp from unpretreated new material. X-ray diffractometer analysis indi- cated that the crystallinity of the cellulose reduced after enzyme pretreatment.