| Effects of ZnCl2/H2O/C2H5OH Treatment on the Filter Paper Performance |
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| Author Name | Affiliation | | Lele Cao | Material Science and Engineering College, Northeast Forestry University, Harbin, Heilongjiang Province, 150040, China | | Lisheng Tang | Material Science and Engineering College, Northeast Forestry University, Harbin, Heilongjiang Province, 150040, China | | Qing Li | Material Science and Engineering College, Northeast Forestry University, Harbin, Heilongjiang Province, 150040, China | | Wenbo Liu* | Material Science and Engineering College, Northeast Forestry University, Harbin, Heilongjiang Province, 150040, China |
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| Fund Project:The authors are grateful for the support of the Natural Science Foundation of Heilongjiang Province (Grant No. C2018007). |
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| Abstract:Bleached softwood kraft pulp (BSKP) fibers were pretreated in a 5 mol/L NaOH aqueous solution at 35℃ for 90 min. The ZnCl2/H2O/C2H5OH was used to treat the pretreated BSKP fibers, filter papers were then prepared. In the course of processing, the effects of various molar ratios of ZnCl2/H2O/C2H5OH on the filter paper performance were evaluated. SEM-EDX was conducted to analyze the physical configuration of the filter papers. Moreover, FT-IR and XPS were performed to further characterize the BSKP, the pretreated BSKP and the filter paper fibers. The results indicated that the fibers treated by ZnCl2/H2O/C2H5OH were swollen and exhibited slight fibrillation, leading to a looser fiber structure and therefore, enhanced filter paper performance. Air permeability increased from 161.7 L/(m2·s) to 1450.4 L/(m2·s) for the filter papers when the molar ratio of ZnCl2/H2O/C2H5OH was 1:14:1. The optimum molar ratio of ZnCl2/H2O/C2H5OH was found to be 1:14:1, and no significant effect of ZnCl2/H2O/C2H5OH on fibers’ functional groups was detected. These results showed that filtration performance of filter papers was improved when treated with the ZnCl2/H2O/C2H5OH solution. |
| keywords:BSKP fiber ZnCl2/H2O/C2H5OH filtration performance filter papers |
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