In this research, the effect of bentonite micro-particles on the performance of chitosan as a new additive system for improving the dry strengths of acidic papermaking was studied. Chitosan, an abundant carbohydrate biopolymer, in 4 dosages (0, 0.75, 1.25 and 2% based on dry weight of pulp) was applied with bentonite in 4 dosages (0, 0.3, 0.6 and 0.9% based on oven-dry weight of pulp). Although the addition of chitosan up to 0.75% (without bentonite) improved tensile index and burst index, but the addition of more chitosan decreased all mechanical properties in comparison with the control sample. The application of bentonite in combination with chitosan had a significant impact on chitosan performance in mechanical properties. The best results were obtained with 0.3% bentonite consumption. Visual formation ranking had a proper correlation with this obtained results. The micro-kjeldahl indirectly confirmed chitosan retention in the treated paper with chitosan/bentonite.

中文翻译：

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膨润土微粒壳聚糖作为湿端添加剂体系的纸张增强性能

在这项研究中，研究了膨润土微粒对壳聚糖性能的影响，该壳聚糖是改善酸性造纸干强度的新型添加剂体系。将4种剂量（基于纸浆干重的0、0.75、1.25和2％）的壳聚糖（一种丰富的碳水化合物生物聚合物）与膨润土一起施用4种剂量（基于纸浆的烘箱干重的0、0.3、0.6和0.9％） ）。尽管添加高达0.75％（不含膨润土）的壳聚糖可改善拉伸指数和爆裂指数，但与对照样品相比，添加更多的壳聚糖会降低所有机械性能。膨润土与脱乙酰壳多糖的组合的应用对脱乙酰壳多糖的机械性能有重要影响。膨润土消耗量为0.3％可获得最佳结果。视觉编队排名与此获得的结果具有适当的相关性。微量凯氏定氮法间接证实了脱乙酰壳多糖/膨润土对脱乙酰壳多糖的保留作用。