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基于正负电荷相吸的原理和聚电解质层层自组装技术,对杨木APMP纸浆纤维表面依次进行阳离子淀粉、阴离子淀粉和阳离子淀粉包覆,讨论无机电解质种类、淀粉用量、纸浆浓度、无机电解质浓度、pH和吸附时间对APMP纤维表面淀粉吸附量的影响。研究结果表明,当AlCl3的浓度为36mmol·L-1、纸浆浓度4.0%、吸附时间15min、淀粉用量11mg·g-1纤维、pH5.0时,淀粉3层包覆后的APMP浆纤维表面淀粉吸附量为31.48mg·g-1纤维,纤维表面淀粉保留率达到95.4%,同吸附单层阳离子淀粉的空白样相比较,多层淀粉包覆APMP纸浆纤维表面淀粉吸附量增加247.56%。
Based on the principle of positive and negative charge attraction and the self-assembly technology of polyelectrolyte layer, cationic starch, anionic starch and cationic starch were coated on the surface of APMP pulp fiber. The effects of inorganic electrolyte type, starch dosage, pulp concentration, inorganic electrolyte Effect of Concentration, pH and Adsorption Time on Starch Adsorption Capacity of APMP Fibers. The results show that when the concentration of AlCl3 is 36mmol·L-1, the pulp concentration is 4.0%, the adsorption time is 15min, the amount of starch is 11mg · g-1, the pH value is 5.0, The adsorption capacity of starch was 31.48mg · g-1, the retention rate of starch on the surface of fiber was 95.4%. Compared with the blank samples adsorbed on single-layer cationic starch, the starch adsorption on the surface of multi-layer starch-coated APMP pulp fiber increased by 247.56%.