【摘要】 本文以淀粉和阔叶木浆为原料，采用研磨法制备淀粉-纤维基复合防油剂，研究了不同研磨条件对复合防油剂粒度、黏度及微观形态的影响，分析了将其应用于防油食品包装纸板上的防油效果。结果表明：当纤维添加比例为5%，研磨4 h制备得到的复合防油剂在粒度、黏度、微观形态上都比较适合涂布，且涂布后能够获得最佳的防油效果。在此条件下制备的复合防油剂中位粒径(D₅₀)达到300 nm左右，黏度为370 mPa??s，涂布后纸板的透气度降至0.000 8μm/（Pa??s），防油等级可以达到8级。更多还原

【Abstract】 In this paper, starch and hardwood chemical pulp were used as raw materials to prepare starch-fiber based composite oil repellents by grinding. The particle sizes, viscosities and microstructures of the composite oil repellents obtained by grinding under different conditions were investigated, and the oil-proof performance of paperboards coated with the repellents was evaluated. The results showed that when the fiber addition proportion was 5%, the composite oil repellents after grinding for 4 hours were more suitable for coating in terms of particle size, viscosity and microstructure, and could achieve a better oil repellent effect after coating. For the composite oil repellents prepared under this condition, the median particle size(D₅₀) could reach approximately 300 nm with a viscosity of 370 mPa??s; meanwhile, the air permeability of the paperboards coated with this composite oil repellents decreased to 0.000 8 μm/（Pa??s）, and the oil resistance grade could reach level 8.更多还原