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基于聚电解质层层沉积技术,本文通过AlCl3协同阴/阳离子淀粉多层交替包覆APMP纸浆纤维,从而探讨AlCl3协同淀粉包覆APMP纸浆纤维的层数对淀粉吸附量、纸浆Zeta电位和成纸性能的影响。结果表明,当AlCl3的浓度为36 mmol.L-1,纸浆浓度为4.0%,每次吸附时间为15 min,每次淀粉用量为11 mg.g-1纤维,pH为5.0的条件下,淀粉八次交替包覆APMP浆纤维表面的淀粉吸附量为63.36 mg.g-1纤维,纸浆Zeta电位为-5.36 mV,随着淀粉包覆纸浆纤维层数增加,纸浆纤维成纸的抗张指数、耐破指数及环压指数均呈上升趋势,而撕裂指数先增加后降低。AlCl3协同阴/阳离子淀粉多层交替包覆APMP纸浆纤维产物的扫描电镜(SEM)表明,AlCl3协同阴/阳离子淀粉三层包覆纸浆纤维表面的淀粉复合膜粗糙程度高于三层淀粉直接包覆纸浆纤维表面复合膜粗糙程度。
Based on the polyelectrolyte layer deposition technology, the AlCl3 synergistic anion / cationic starch multi-layer coating APMP pulp fibers, so as to explore the AlCl3 synergistic starch coating APMP pulp fiber layer on the starch adsorption capacity, pulp Zeta potential and paper properties Impact. The results showed that when the concentration of AlCl3 was 36 mmol·L-1, the pulp concentration was 4.0%, the adsorption time was 15 min, the amount of starch was 11 mg.g-1, the pH value was 5.0, The starch adsorption capacity of APMP pulp fiber was 63.36 mg.g-1 and the zeta potential of pulp was -5.36 mV. The tensile index of pulp fiber increased with the increase of the number of fiber layers, Bursting index and ring pressure index showed an upward trend, while the tear index first increased and then decreased. Scanning electron microscopy (SEM) results showed that AlCl3 synergistic with anionic / cationic starch three-layer coated pulp fibers had higher surface roughening degree than that of three-layer starch direct coated Pulp fiber surface composite film roughness.