载银沸石对纸张抑菌防霉性能及印刷适性的影响

研究了不同添加质量(或添加质量浓度)的载银沸石对牛皮纸、白卡纸和铜版纸的抑菌防霉效果及机械性能、白度、平滑度等印刷适性的影响。结果表明:1)当纸张中载银沸石的添加质量浓度为1000mg/L时,大肠杆菌的抑菌环直径达21.5mm,由此可知,载银沸石能较好地抑制大肠杆菌的生长。2)当纸张中载银沸石的添加质量为1.0g时,纸张完全无霉菌生长,且纸张边缘的菌丝也未见长出,由此可知,载银沸石对黑曲霉具有一定的抑制效果。3)不同添加质量的载银沸石对纸张的机械性能、白度和平滑度有一定影响,但影响较小。故当载银沸石的添加质量为0.5～1.0g时,纸张不仅具有较好的抑菌防霉效果,且其机械性能、白度和平滑度没有明显变化。

Influence of Silver-Loaded Zeolite on Antibacterial and Antifungal Propertiesand Printability of Paper

Taking E.coli and Aspergillus niger as examples, antibacterial and antifungal effects of silver-loaded zeolite with different additions in kraft paper were detected. Result shows that when the concentration of antibacterial agent in paper is 1 000 mg/L, the inhibition zone reaches 21.5 mm. It can be seen that the growth of E.coli can be inhibited greatly by silver-loaded zeolite. While the quality of antibacterial agent added in paper is 1.0 g, Aspergillus niger can be inhibited effectively in paper and mycelium cannot grow at the edge of paper, so silver-loaded zeolite has a certain effect on Aspergillus niger. Silver-loaded zeolite with different additions have has very limited impact on mechanism property, whiteness, smoothness of paper. Therefore, While the additions of antibacterial agent are between 0.5 g and 1.0 g, the growth of E.coli and Aspergillus niger can be effectively inhibited by antibacterial paper while mechanism properties, whiteness, smoothness of these papers are not dramatically affected.