CAJ | 학술논문

以国产OCC浆为原料，用漆酶处理纸浆来提高成纸强度，对漆酶处理国产OCC纸浆最佳工艺条件进行优化。优化后漆酶处理国产O C C纸浆最佳工艺条件为：漆酶用量为16U/g（相对绝干浆），浆浓度5％，温度50℃，p H=5.0，反应时间为90m i n。结果表明：与单独用漆酶处理相比，干抗张指数与湿抗张指数分别增加了6.88％、27.3％；同时发现，漆酶体系中加入组氨酸介体，可明显提高纸浆的强度性能；生物与机械共同处理纸浆能够更大幅度提高OCC浆的成纸强度。环境扫描电镜图发现：与对照样组相比，用漆酶-组氨酸处理的纤维表面上观察到更多的塌陷和更多的原纤维生成，这是导致形成更强的纤维结合力，提高成纸强度的原因。
이국산OCC장위원료，용칠매처리지장래제고성지강도，대칠매처리국산OCC지장최가공예조건진행우화。우화후칠매처리국산O C C지장최가공예조건위：칠매용량위16U/g（상대절간장），장농도5％，온도50℃，p H=5.0，반응시간위90m i n。결과표명：여단독용칠매처리상비，간항장지수여습항장지수분별증가료6.88％、27.3％；동시발현，칠매체계중가입조안산개체，가명현제고지장적강도성능；생물여궤계공동처리지장능구경대폭도제고OCC장적성지강도。배경소묘전경도발현：여대조양조상비，용칠매-조안산처리적섬유표면상관찰도경다적탑함화경다적원섬유생성，저시도치형성경강적섬유결합력，제고성지강도적원인。
Taken domestic OCC pulp as raw material, the conditions to treat domestic OCC pulp with laccase treatment was optimized to improve paper strength. The optimum conditions for laccase treatment were: laccase dosage 16U/g based on dry pulp, pulp consistency 5%, temperature 50℃, pH=5.0 and reaction time 90min. The results show that the dry tensile index and wet tensile index are increased by 6.88% and 27.3% respectively; at the same time, the addition of mediator histidine in laccase system can obviously improve the strength of the pulp properties, compared to the treatment with laccase alone;furthmore, modiifcation by both biological and mechanical treatment can raise the paper strength from OCC pulp in larger extent. It was found that environmental scanning microscope images show that more fibrillation and collapse noticed on the surface of fiber treated by laccase-histidine than the ifber in the contrast control sample, which is the reason to result in stronger bonding force between ifbers to raise the paper strength from laccase-histidine treated OCC pulp.